Synthetic vs. Non Synthetic Oil and Heat

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Henry___ Dodge Dakota JOIN HERE 4/19/2003 09:07:21	Subject: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: Does anyone run a somewhat accurate temperture gauge that might have used both oils ..... and indicate which might run a bit cooler Synthetic or Non Synthetic ,or do they run the same temperture?
AmsoilSponsor DakotaEnthusiast 4/19/2003 09:20:37	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: Henry, Temperatures will generally be pretty constant up to the point that you are exceeding the capacity of the radiator/cooling system in summer heat. So if you are less than that ... both oils will register "nearly" the same ... except that synthetics (with their superior base stock and additives packages) create less friction which should (and usually does) register a slightly lower operating temperature. A slightly lower operating temperature does have its benefits and results in a cleaner engine and longer engine life. -------------------------------------------------- Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com AMSOIL Synthetic Motor Oils, Lubricants, Filtration, and Truck Care Products
JimmyJ Dodge Dakota JOIN HERE 4/20/2003 08:12:44	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: I always thought oil temp gauges are for watching your oil warm up to a temp range that is suitable for gunning it....
JimmyG Dodge Dakota JOIN HERE 4/20/2003 14:45:29	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: George, There is no difference in the temperature that synthetics and no synthetics run at. 99.9% of the heat in an engine is a byproduct of combustion, not friction. Any difference in sheer strength of an oil film, and there is no difference in equal viscosity oils, is negligable. If heat is a problem, install an oil cooler.
hyp0cracy Dodge Dakota JOIN HERE 4/20/2003 16:28:36	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: hey amsoil sponser/steve how much can you give it to us for and filter, because i was thinking about switching to synthetic, and was gonna buy mobile one, but if you can get it to me a little cheaper maybe ill get ams, yes i knw ams is way better, also how often you recommend oil change thanx and let me know
dak_k Dodge Dakota JOIN HERE 4/20/2003 17:06:16	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: JimmyG, Who were you responding to using George? and did you read Steve's comment, "both oils will register "nearly" the same". I think he aleady said what you said, ....for the record. hyp0cracy, who wants to do business with a hypocrite? definition- a person who professes beliefs and opinions that they do not hold. Should something be read between the lines here?
JimmyG Dodge Dakota JOIN HERE 4/21/2003 03:29:26	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: dak_k Who the fukc appointed you board secretary? If you don't have an informed opinion to offer, just more silly azzed, pimply faced, teen aged bullsh1t, why the he11 don't you just fukc off?
HOTRODSRJ Dodge Dakota JOIN HERE 4/21/2003 06:58:54	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: I would like to offer my two cents here if I may. FWIW, I write technical articles for NOrthern Rodder Magazine and Southern Rodder Magazine and have not only engineering degrees, but also an A&P background along with car building and engine dynoing experiences. As you can see, I am out of control on automotive/rodding issues? I offer this information not to brag...only to calibrate my comments with respect to synthetics vs dino oils! I have a vast background with these issues both in racing and on the street and talk to the Valvoline chemists on a regular basis about some of this stuff. There are some valid reasons that synthetics will lower internal temperatures I might add. While the previous poster is correct in that most of the heat created by combustion exits the exhaust or is dissipated by the cooling system, some of the heat is carried away by the oiling system also. Some of that heat is caused by friction, but not a substantial amount. But, the reduction of friction can be easily noticed in the power and milage department. Here is an excerpt from one of the articles that I wrote on the synthetic stuff! "Synthetic oils are comprised of specially engineered molecules from other than petroleum based products. These are chemically altered from lower viscosity based stocks to produce very predicable properties and desirable performance. You have heard of designer drugs, well this is designer oil! These synthetic oils possess perfect or ideal properties for use in your automobile’s engine. Raw crude oil stock contains a plethora of contaminants, which cannot be refined out of the end product. Contaminates such as corrosive acids, paraffins, plastics, waxes, metals, naphthenes and benzenes, as well as compounds of sulfur, chlorine, and nitrogen remain in the finished product. This is not true with synthetic based lubricants! Also, large quantities of water are produced by the normal combustion process and are collected in the crankcase. The inherent lack of contaminates and overall superior stability of synthetic oil drastically reduces degrading due to natural occurring moisture in your engine. If you have a good crankcase breathing system, moisture gets removed with increase heat production, but in cold weather a lot of condensation is produced. Moisture also stays in the crankcase with shorter trips as well. During the combustion process, nitrates are naturally created as byproducts and moisture dissolves these into harmful mixtures of nitric and nitrous acid(s). These chemical concoctions are one of the most destructive issues to your oil life. Another important trait is that petroleum oil molecules vary significantly in size and shape. When your engine heats up, the smaller molecules will have a tendency to evaporate, while the larger ones tend to oxidize and become left behind engine deposits. As a result, refined petroleum lubricating products differ widely in their overall quality and performance. Synthetic molecules are very stable and consistent in size, which exponentially improves performance by design. Synthetic oils are far superior for high-temperature and thermal stability performance. Superior high-temp stability ensures and engine lubricant's capacity to protect vital engine components during very-high-temperature operation, such as hot summer driving, sustained high-speed driving, repetitious stop and go driving, mountainous terrain and/or pulling a trailer, or any driving with a small harder-working piston engine. While coolant temperatures may indicated only a 200F temperature, the temperature of assorted bearing surfaces significantly exceed the water temperature and often attain 500F on the piston ring and cylinder wall areas. These hot surfaces serve to rapidly decompose regular petroleum oil as well as contribute to their shorter service life, while the synthetic product is largely unaffected by these stratospheric temperatures. High thermal stability moreover permits an engine oil to deliver overall extended service life (significantly longer drain intervals) in all driving conditions, because it prevents sludge and carbon deposit formations on critical engine parts due to oil thickening, a problem commonly attributable to petroleum oil breakdown at high temperature. As these deposits accumulate in the oil circulatory system, oil flow expulsion points, thus accelerating engine wear. The unarguable benefits of synthetic oils are (1) reduced wear of critical engine components; (2) significantly reduced sludge and varnish... a cleaner engine; (3) reduced engine drag due to uniform viscosity; and (4) increased fuel economy due to reduced component wear as well as increase in power (make the Tim Allen grunting sound here!)! Did you ever think that synthetic oil might cool your engine better? There are three identifiable reasons why synthetics do a better job of cooling an engine: - Because the oil's lubricity and it's stable viscosity which results in less friction and therefore less heat! But not a bunch! - The molecular structure of the oil itself is designed to more efficiently transfer heat and results in better cooling, especially if an external cooler is used. - The more oil flow of these lower-viscosity synthetics contributes significantly to the efficient transfer and dissipation of heat (oil-temperature decreases of from 20F to 70F are quite common with the use of synthetic products. Another superior trait of synthetic oils is “film strength. "Film strength" refers to the amount of pressure required to force out a certain film of oil from between two pieces of flat metal under laboratory conditions. The higher the film strength, the more protection is provided to such parts as piston rings, timing chain, cams, lifters, and rocker arms...wherever the lubricant is not under oil-system pressure, which is usually at rest. Synthetics routinely exhibit nominal film strength of well over 3,000 psi, while in stark contrast petroleum based oils average somewhat less than 500 psi. The result is more lubricant protection between moving parts with synthetics especially on cold start-ups! Finally, a fantastic accolade of synthetic oils and lubricants are their lower inherent coefficient of friction. This means that they are slipperier than conventional oils. This translates to more horsepower and better mileage. I personally have seen an increase in torque and power and better mileage results both in my everyday driver and rods! Surprise! Synthetic lubricants are not a recent development. As early as the 1930s, Standard Oil of Indiana conducted research into synthetic oils. As jet engines were developed after WWII, it soon became evident that conventional oils couldn't withstand the high temperatures and pressures. Still later, NASA specified synthetic-based lubes for all space vehicles, including the Space Shuttle. Today's automotive synthetic lubricants have evolved as an almost direct result of these military lubrication requirements. To reiterate to you the general and wanted traits of synthetic lubricants: - Low temperature fluidity and low volatility - High-temperature stability and high oxidation resistance - Much improved lubricity and higher wear protection, - Better fuel economy and power - Higher film strength extended drain capabilities - High moisture resistivity and high inherent detergent characteristics. If you don’t translate science very well maybe some qualified anecdotal evidence will convince you. In a much lauded article on synthetic motor oils which appeared in Popular Science magazine several years ago, veteran race car driver and much respected engine guru Smokey Yunick was quoted: "When you disassemble an engine that's been run on petroleum oil, if you examine the rings and cylinder bores with a magnifying glass you'll see ridges and scratches--that's the wear going on. In the engine we ran at Indianapolis this year we used a polyol synthetic. When we tore the engine down, you could still see the original honing marks on the bearings...no wear at all! We put the same bearings back in because the crankshaft never touched the bearings. I've never seen that before." Case closed if Smokey is convinced!" On another front, someone asked about drain intervals. Here is what I submit on that subject. Drain intervals are somewhat personal. The reason is the environment and application that you are using your vehicle in and if you have your car tuned correctly, and real dusty environments warrant more frequent changes as well. Obviously, short trips and city driving are worst than highway driving. Poorly tuned carbed cars can really bugger up the oil quickly as well. Nevertheless, with the superior performance of synthetics over dinosaur remnents, normal driving conditions can easily produce an very conservative 12,000 miles of service drain intervals with sythetics. I push my Dakota and other seven autos to over 15K on a regular basis as well. I have personally torn down these engines and never seen any signs of mechancal wear as well. If any of you have questions regarding this simply email me at my magazine email at JackStands@aol.com and I would be glad to respond.
JimmyG Dodge Dakota JOIN HERE 4/21/2003 15:04:47	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: A very long winded way of restating what was already said and what most people already know.. Please let me paraphrase. If you switch to synthetic oils believing that move alone will cure your overheating problems, you're mistaken. If you want to lower your oil temps, install an oil cooler. If you think synthetics will save an overheating engine, think again. The thermal properties of synthetics make them slightly more desirable than conventional oils but the belief that synthetics will save an overheating engine is akin to believing that a fire proof suit will save your life in a house fire. It might save your skin but you'll still cook at 1000 degrees.
dak_k Dodge Dakota JOIN HERE 4/21/2003 16:04:48	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: Jimmy G, This was the original post; nothing about overheating. "Does anyone run a somewhat accurate temperture gauge that might have used both oils ..... and indicate which might run a bit cooler Synthetic or Non Synthetic ,or do they run the same temperture?" I believe you are fighting the wrong fight. Comments here have nothing to do with overheating.
Dr. D Dodge Dakota JOIN HERE 4/21/2003 18:06:00	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: When I switched to Synthetics: My VDO oil temp gauge showed a 30 degree drop in oil temp on my truck that I use for heavy towing. My B&M digital transmission temp gauge (plumbed into the transmission fluid return line) showed a whopping 65 degree drop in temps while towing the same load under the same conditions. Dr. D (Runnin AMSOIL)
Squig Dodge Dakota JOIN HERE 4/22/2003 04:12:38	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: Bullsh1t, Dr. D, bull fukcing sh1t.
Phil Dodge Dakota JOIN HERE 4/22/2003 06:20:45	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: I 'll second that, BULLSH1T!!
JimmyD Dodge Dakota JOIN HERE 4/22/2003 11:25:31	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: BULLSH1T ?????????? NOT !!!!!!!!! Dr. D told me at breakfast today that he was being flamed for his post of a BIG drop in temps., and I decided to come here and comment. I've never been to this site and I don't own a Dakota. However, I witnessed FIRSTHAND the temperature drops Dr. D described above on his father's RV, since I helped him change the fluids and looked at the guages myself. The test was not scientific in a lab, but even in the driveway the needle don't lie. Jimmy
HotRodSRJ Dodge Dakota JOIN HERE 4/24/2003 12:16:57	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: This is a common phenom with racing vehicles and towing vehicles. Synthetics WILL reduce internal oil temperatures due to it's better heat transfer properties. This is NOT my opinion, this is scientific fact.(This has nothing to do with friction heat folks.....differing subject completely!) Synthetics have a higher specific heat number (about 20% higher than dino) and also flows better than conventional oils. This raises the system heat transfer efficiency due to the media's ability to carry more btus to the cooler and higher flow rates which also improves the sytems ability to cool. This is one of the reasons this product was invented! I personally have seen lower oil temps in racing, towing and motorhome applications with sythetics. Now, whether the experienced delta (difference) is the norm is the part that's debateable! The gauge could be off, or the conditions may not be the exact same conditions. No BS me thinks.....it's simply chemistry and fluid/heat transfer physics!
4 x Dak Dodge Dakota JOIN HERE 4/24/2003 17:58:59	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: It is amazing that when someone with an educated opinion post's all the real BS stops
rivermaniac Dodge Dakota JOIN HERE 4/24/2003 20:23:41	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: so a 10/30 synthetic to a 10/30 dino oil will reduce heat in the motor , trans etc..........Why is there different values then ????? Why not just synth without the values ?????? so it's viscocity to temp and if it's lower than the values should be different ???? I'm ignorant and trying to learn , thanks .............
HotRodSRJ Dodge Dakota JOIN HERE 4/24/2003 21:15:45	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: A simple switch to same weight synthetics from dino stuff does NOT guaranty a temperature drop necessarily. It will improve lubricity, contamination issues, longer lived, and may help with cooling depending on use. The reason I referenced racing, towing and motorhomes (basically any vehicle that pulls heavy loads all the time) is that the increase in hp generation required for doing such increases the waste heat generation as well. Switching under normal use for autos/trucks does not usually produce a significant drop in oil temperature because the cooling apparatus/system for the oil is within it's normal designed for environment and keeps within the design range. When you add loads to the engine such as towing, motorhomes or racing is when that additional heat needs to be disposed of. This is where sythetics really outclass conventional oils because of the improved flow and heat transfer capabilities. Actually, viscosity does have some affect on heat transfer because of the flow rates. Thinner oils actually remove more heat due to the increase in efficiency. Now the heat may get stuck in the pan, but the more flow the more heat gets sucked away. Here is a blurb that I wrote for an article on lubrication from a magazine regarding viscosity. "The most popular and well-known property of oil that is known by most motorists is viscosity. This is sometimes referred to flowability as well as is one of the most important properties for an engine. Viscosity is the property of oil to develop and maintain a certain amount of sheering stress and continued flow under duress. Oil weight, or viscosity, refers to how thick or thin the oil is literally. The temperature requirements set for motor oils by the Society of Automotive Engineers (SAE) is 0 degrees F (low) and 210 degrees F (high). Oil is rated for viscosity by heating it to a specified temperature, and then allowing it to flow out of a specified/sized hole. Its viscosity rating is determined by the length of time it takes to flow out of the hole. If it flows quickly, it gets a low rating. If it flows slowly, it gets a high rating. Oils meeting the SAE's low temperature requirements have a "W" after the viscosity rating (example: 5W), and oils that meet the high ratings have no letter (example SAE 30). Thicker oils such as a 50W have a higher viscosity (like molasses) and thinner oils such as 5W have a lower viscosity (like water). Oil with too low of a viscosity can run easily off parts leaving little or no lubrication protection as well as can shear and loose film strength at high temperatures. Oil with too high a viscosity may not circulate well to the proper parts at low temperatures and thus the film may tear at high rpms. Either situation can be as damaging to your engine as the other but properly selected oil for the engine and its applications can give it a long and happy life of cruising! Oils are designated 0, 5, 10, 15, 20, 30, 40, and 50 respectively by the SAE. Single weight oils used to be all the rage many years ago, but with the ever changing applications of engines today, and the wanted increase in operating range of lubricants, multi-viscosity oils were fostered. And gratefully so whereas these oils represent the crux of the motor oil usage today and provide superior protection in wide ranging temperatures, even by the OEMs. The more popular multi-viscosity oils are made by adding special molecules called polymers to an oil base product (5W, 10W, 15W, 20W), which prevents the oil from thinning too much as it warms up and flowing at lower temperatures. At cold temperatures these polymers are coiled or wound up (microscopically speaking) and allow the oil to flow freely. Conversely, as the oil warms up the polymers begin to unwind into longer chains, literally expanding which prevents the oil from thinning as much as it normally would without the added polymers. The product of this is that at 212F (100C) the oil has thinned only as much as the higher viscosity number indicates. To simplify this, think of a commonly used 10W-30 oil as 10-weight oil that will not thin any more than a 30 weight would thin when hot. When choosing a multi-viscosity (sometimes also referred to as a multi-weight or multi-grade oil) product, select a range with the narrowest span of viscosity for the temperatures that you will normally operate in. For example, a 5W30 product is a good year-round northern climate application and a 10W40 more for the middle temperate regions and a 20W50 product for higher temperate operating ranges. Another strategy for personalized oil viscosity engineering is to “climatize” your selection. In the winter base your decision on the lowest temperature you will operate in and in the summer the highest temperatures. Refer to the chart for your application. Lower range 5W, 10W and 15W oils require a lot of polymers (synthetics excluded) to be added to the bases to achieve stability in a certain range. The downside to some polymer additives is that polymers can shear and burn forming deposits that can cause ring sticking and other problems. The wide viscosity range oils, in general, are more prone to viscosity and thermal breakdown due to the high polymer content. In-so-far as your everyday driver is concerned, I would take the advice of the OEM engineers that have spent gobs of money and resources to figure out what is appropriate for that vehicle. In other words…follow your manufacturer's recommendations as to which weights are appropriate for your vehicle, period. The next yardstick is the Viscosity Index or VI as it’s called. The VI is a relative number indicating the rate of change in viscosity of an oil within a given temperature range. Higher numbers indicate a lower change, lower numbers indicate a relatively larger change thus the higher the number the wanted. Remember that as you peruse the information here! These numbers can only be compared within its viscosity range. It is not an indication of how well the oil resists thermal breakdown or any other measure of performance. The VI is especially important to bearing surfaces due to the want of oil consistency or stability. Sometimes other additives may affect this measurement to an extent, but the additive might contribute other beneficial aspects for the product and produce an overall better performance as a result." With tranny lubes the synthetics are not as effective and wanted. Remember, you actually need friction to impellate the drive gears. I would only use synthetics in trannies that have high heat build up (towing,etc). They do not degrade with combustion byproducts and/or moisture either.....so that feature of synthetics is out the window.
tommyTT Dodge Dakota JOIN HERE 4/26/2003 11:27:01	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: I would use synthetic oil if you plan on keeping the vehicle for a long time. If on the other hand you are going to trade it of after a few years, use the cheapest oil you can find, quick lubes etc., and let the next owner worry about it.
Jules Dodge Dakota JOIN HERE 4/27/2003 02:33:58	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: Anyone making the claims Dr.D and his various aliases are is a fukcing liar. Dr, D is a fukcing lyimg sack of sh1t, as are all his alter ego's. Synthetics do not drop temps the way he claims. He is nothing more than a lying sack od sh1t.
HotRodSRJ Dodge Dakota JOIN HERE 4/27/2003 07:55:01	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: Whether or not you believe the raw numbers, you cannot recite the reason(s) or articulate the science as to why or whynot? I suggest you do some homework and offer some sort of intelligent retort instead of a profane-laced pontification on something you have no idea about other than you can cuss up a storm. That's a real attribute that we believe you and take your side? Make a call to any of the synthetic company engineers and ALL will tell you that one of the features of synthetics are the ability to lower internal surfact temperatures of high output engine applications. This is due to reduced friction, higher flow, and better heat transfer. This concept is NOT hard to understand. Also, check out some of the Winston Cup garages and ask a few of their engine builders. They will tell you the same thing. While the numbers may not seem believeable to you, their could be a good explanation of what is really happening. Conditions may not be the very same with ambient temps, loading and many other anomolies. Also, the gauges can be off as much as 10 - 15 degrees F in my experience, so he may be reciting exactly what he is seeing. I have seen enough temperatures lowered in that towing, racing and motorhome applications to know there is a definite reduction and 20 degrees can be tyypical. I can believe more as well. If you don't believe my two engineering degrees and aircraft mechanics license take, and a couple of Valvoline engineers say so, check out another expert on sythetics for corroboration. Pay particular attention to the figures given for temperature drops!!! Go to http://www.mr2.com/TEXT/synth_oil.txt for the entire article by Scott Curt, another GMI graduate engineer that writes for Homebuilt Publications. This is another very good article and a must read on sythetics. Here is a blurb from his take for those of you that want the reader's digest version...."The remarkable ability of synthetic oils to reduce internal operating temperatures is far too important to ignore, since high operating temperatures contribute directly to premature failure of mechanical components and gaskets and seals. Coolant (i.e. water/antifreeze) cools only the upper regions of an engine. The task of cooling the crankshaft,main and connecting rod bearings, the timing gear and chain, the camshaft and its bearings, and numerous other components must borne entirely by the oil. There are three identifiable reasons why synthetics do a better job of cooling an engine: (1) Because of both the oil's lubricity (slipperiness) and it's stable viscosity, less friction-- and thus less heat-- is generated in the first place; (2) The molecular structure of the oil itself is designed to more efficiently transfer heat, even compared against the thermal conductivity properties (ability to absorb and dissipate heat) of an identical-viscosity petroleum oil; and (3) As mentioned, the more rapid oil flow of these lower-viscosity synthetics contributes significantly to the efficient transfer and dissipation of heat. Because of all these factors, oil-temperature decreases of from 20F to 50F are quite common with the use of synthetic oil. One might even say that the heat-reduction properties of synthetics are synergistic...by helping to reduce its own temperature, the synthetic oil is simultaneously enhancing the lubricant's overall performance characteristics.
sandman Dodge Dakota JOIN HERE 4/27/2003 12:24:39	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: The only synthetics that consistently lower the operateing temps at max output are synthetic oils with a very high percentage of polyol base stocks. Redlines products have been shown time and time again on dyno's and on the track to reduce operateing temps by 25-35 degree's F. I am not aware of any other synthetic that consistently does this. Lowering the operateing temp is not the most important factor to selcting an oil for a daily driver thoug. These reduced temps were experinced at peak output levels on the track and on dyno's not tooling around town. So bear in mind that you might not notice any difference under normal counditions. I would also point out that the guage on your dash is not accurate enough to display a 25 degree drop.
Dr. D Dodge Dakota JOIN HERE 4/27/2003 13:47:37	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: Dear Jules, It just so happens that I use commercial and heavy equipment on a daily basis and "ALL" of this equipment is lubricated by AMSOIL products ! I had tried other brands of Synthetic Lubricants but no other company offered everything that I needed. "ALL" of my claims can be proven and are factual through both oil analysis, high quality hand held temp guns and in some cases ... permanently mounted oil temp gauges. Love, Dr.D
mpcross Dodge Dakota JOIN HERE 4/28/2003 11:15:06	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: JimmyG should have a right to post his opinion however stupendously, stupid it is, and the rest can laugh with/at the clown,laff!!! THANKS to the others who are dedicated and humble enough to share with others,their findings.
Dave1969 Dodge Dakota JOIN HERE 8/02/2003 13:03:56	RE: Synthetic vs. Non Synthetic Oil and Heat IP: Logged Message: Towing... Tell me what I'm missing in the picture. The tranny oil is cooled by the built in cooler in the rad. If the tranny get hot, the heat will transfer to the coolant in the rad. Rise in temp mean higher indication on the engine temp gauge. I'm assuming that if the temp rise in the tranny its because your engine also work harder and will also create more heat. So the tranny And the engine will overheat at the same time vice-versa you can monitor your tranny temp by monitoring the eng temp gauge. Can you overheat a tranny without noticing an increase on the eng.temp gauge ? I'm always talking about normal or light tow service, no spinning or racing here. How is this all afected by the use of syn. or dino?
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