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BB2DAK
Dodge Dakota
10/12/2001
14:19:11
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 Subject: Mobil-1 0W-30 Synthetic Oil
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I have about 9000 miles on my 2001 QC ,and am planning to change the oil in my Dakota to full synthectic Mobil-1 (Currently running Valvoline Duralube ).
I was at Pep-Boys today, and noticed that Mobil-1
sells 10W-30, 5W-30, and 0W-30.
I know that my truck is recommended for 5W-30.
Would there be a problem running 0W-30, or should I just stick with the 5W-30 oil ?
2001 Quad Cab SLT+ 4.7L 5-Speed 3.55 Lslip
K&N Drop-in, Garnet Red ARE Cap,
ArmaCoat Sprayed in Bed-liner
http://www.dodgedakota.net/albums/viewer/101.htm
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sandman
Dodge Dakota
10/12/2001
19:14:35
|  RE: Mobil-1 0W-30 Synthetic Oil
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0W-30 realy does not have very much long term use behind it. Personaly I will not use anything lighter than 10w-30 unless the tempature is in the negative numbers with out windchill. I would never drive at highway speeds with 5w30 or lighter by choice. I belive that mobile-1 10w30 will flow and pump well bellow -30 degrees F so I can not see any reason to go thiner than 10w30. I have put too many miles on vechiles running 20W50 in the summer and 10W30 in the winter. I know their are some 5w30 and 0w30 Nazi's on this board but I have never seen a car make it 300,000 with 5w30 or 0w30. Most car that I work on that have been run on 5w30 are smokeing badly by 120,000 and have poor compression and consume a far amount of oil. The cars that have been run on 10w30, 30W,40W, 50W,60W and 20W50 have usualy faired much better. If clients are not running synthetic I normaly advise 40W,50W, or 20W50 for summer use and 10W30 for winter use. I have read the all of Amsoils info on 0w30 and Mobile-1's info as well and i am just not convinved yet.
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Flash
Dodge Dakota
10/12/2001
22:14:07
| RE: Mobil-1 0W-30 Synthetic Oil
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I run 20-50 Mobil one all year. I live in Texas and we don't have severe winters like folks up north. Depends on where you live and the climate.
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BH-R/T
Dodge Dakota
10/13/2001
00:14:21
| RE: Mobil-1 0W-30 Synthetic Oil
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Any of the three oil weights will work just fine,but it depends on the climate you live in,0W30 is for cold weather,very thin,pumps easier,then goes 5W30,little bit thicker on start up,and then 10W30,which is the thickest on start up,but if you live in a warm climate then you should use the 5W30 or 10W30,if you live somewhere where the weather drops below 20 degrees,then the 0W30 would be what you want,the first number is for cold starts only,and the second number is the oil hot(30),and 20W50 in a new production motor is overkill!And will end up actually hurting the engine,performance,and gas mileage,its way too thick,think about that,0W30 pumps at cold start immediately,now that 20W50,that pumps about 4 times slower due to its thickness than the 0W30,thats along time for all those engine parts to have NO OIL!Any way,get the 5W30,should be good to go that way in all climates.
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Muzzy
Dodge Dakota
10/13/2001
04:35:19
| RE: Mobil-1 0W-30 Synthetic Oil
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168,000 miles on my 91 318. I have been using Mobil 1 5W-30 since 10K miles. I 60psi(mechanical gage) oil pressure at 2000 RPM's. I removed my valve covers to replace the gaskets at 110,000 miles and my rockers look brand new.
I would not use 40 and 50 weight oils in newer motors. They are fine in race engines that are machined to looser tolerances than factory. Manufacturing technology has evolved to the point where they can machine a crank to within .0001 of an inch. The break-in periods of new engines today are a lot less due to the more precise machining done at the factories. Parts no longer have to "wear in" like they did 30 years ago. Putting a heavy weight oil in a close tolerance motor will help loosen up those tolerances. Not necessarily a good thing.
If you want to educate yourself on lubricants, check out this link.
http://www.noria.com/
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sandman
Dodge Dakota
10/13/2001
09:05:14
| RE: Mobil-1 0W-30 Synthetic Oil
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Muzzy tolerance is a measure of how close to a specified dimension one can consistently machine too. It can also be a guide as to how much vartion from spec. can be "tolerated". Clearance is the actual amount of space between moveing parts like bearings and cylinder walls. If you look at the specks for the LA motor and compare that to the new 4.7 you will find that most of the clearances are almost the same. The tolerances are much better on the new motor but the clearances are still about the same. The major changes that reduced break-in were the use of a cromoly top ring and tapered rings. It also does not hurt to have the cam or cams rideing in a bath of oil. Bearing clearance and oil galley size are what determines what weight of oil can be used not tolerance. The reason I included the single wt. oils was to try to ilastrate what could be done with dinosar juice. You can easily get 300,000 miles of an engine with conventional oil so long as the realy light weight oils are avoided. With Synthetic I normaly use 10w30,10W40, or 15w50. The only reason that the manufatures are filling with 5w30 is to improve their cafe rateing. The thinner oil gives better gas millage. They would fill with 0w30 if they thought the engine would last through warranty period. The 0w30 would improve their numbers even more. GM used to fill with conventional 5w20 to increase numbers and the engines simply did not last. Remember that the oil acts like a pillow between parts. The thicker your pillow the lower the chance of metal rubbing metal within reason. Obviously it can not be so thick that it wont pump. Ow30 is being used alot in raceing wear the engine is going to be rebuilt in a passs or two or after one race.If you had to walk on broken glass would you like a silk sock(5w30) on your foot or would you like a got work boot (10W30 or thicker)? I will say this for these ultra thin oils; they do a realy good job of cooling metal parts.
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Larry
Dodge Dakota
10/13/2001
12:41:43
| RE: Mobil-1 0W-30 Synthetic Oil
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For a tretise on synthetic oil, go to
Mr2.com (it's a Toyota page, but press on)
use their 'search form', type: synthetic oil
read the one titled "synth oil.txt"
For further edification, try the Lubrication Engineers' web site at www le-inc.com
Larry, '92,318
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kj
Dodge Dakota
10/15/2001
19:37:11
| RE: Mobil-1 0W-30 Synthetic Oil
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The OW-30,5W-30, and 10W-30 Mobil 1 oils are all fine choices and will work equally well for you. They all act like a 30 weight oil when hot so it depends how fast do you want it to flow when cold. All three will flow well when cold because they contain no wax. I hear people all the time say they will use a 10W-30 but wouldn't be caught dead with 5W-30 because it's too thin. They are the same when hot although 10W-30 requires less polymers to get it act like a 30 because it starts as a 10W base instead of a 5W base. The main ingredient to decent engine life is use a decent filter and change your oil on time. Thick heavy oils were fine for the old days when clearances were a little wider and fuel economy didn't matter. If Winston Cup and Craftsman Truck engines can make 750 hp and run for three and a half hours and 500 miles at 8000 rpms on synthetic 5W-30 then I doubt you will see an oil related failure running 2000-3000 rpms for a few thousand miles.
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kj
Dodge Dakota
10/15/2001
21:59:28
| RE: Mobil-1 0W-30 Synthetic Oil
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I forgot to mention that the superior additive package in modern oil has ended the need for such heavy oils in all but the most extreme applications.
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KCDak
GenIII
10/16/2001
09:18:32
| RE: Mobil-1 0W-30 Synthetic Oil
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So then what oil filter would you guys recommend?
Thanks,
Jason
'00 Sport Quad 4.7L 4x4 3.55
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kj
Dodge Dakota
10/16/2001
17:29:37
| RE: Mobil-1 0W-30 Synthetic Oil
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If you only want to spend a few dollars then I would try one of the following: Wix,Napa Gold,Carquest,(all made by Wix), AC Delco, Purolator, and Motorcraft. If you don't mind spending $10.00 you could go with a Mobil 1 or K&N. I'd stay away from Fram,Pennzoil, or Quaker State filters. I think some of the Mopar filters are Fram but I'm not sure. On the 4.7 you have a stock size filter or you may use the longer filter which I do. Napa Gold 1085 stock size=Napa Gold 1515 larger size and also Mobil 1 204 stock=Mobil 1 301 larger and so on. If you want to use the large filter just make sure it cross references with a Fram PH-8 since it seems like every box uses this for a reference mark.
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KCDak
GenIII
10/16/2001
17:36:52
| RE: Mobil-1 0W-30 Synthetic Oil
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Thank you for the information kj. My next question would be, is it necessary to change out the filter every time I change the oil? I don't do any off-roading, in fact most of my driving is highway driving. Also, I have been changing the oil about every 3,000 miles. Should I continue to change that often when using synthetic? I'm sitting at about 47,000 miles.
Thanks again,
Jason
'00 Sport Quad 4.7L 4x4 3.55
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sandman
Dodge Dakota
10/16/2001
19:08:32
| RE: Mobil-1 0W-30 Synthetic Oil
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Well gentelmen while this is entertaining you are forgetting all of the data avaiable to use from many sources. Redline is one company that has tested alot of products includeing Mobile1, Amsoil, and thier own products. All ot the trends show that the lighter the oil weight the greater the rate of shearing at the rod and crank journals. They also show more wear with lighter weight oils. You can see it at their site. You can also see it at the site that Toyota site that was listed by someone else. Look at the spec's for the older engine clearances and compare them to the 4.7 they are listed in the sevice manual. Their is not that large of a difference. Muzzy 168,000 miles is just getting nicely broken-in in my book. If I do not get 300,000 miles out of an engine before I have to rebuild it I feel that the manufacture of that vechile has failed me!!!!!! I sure hope my new Dodge does not disapoint me. P.S. I never said that anyone should run straig wt. dino juice. It was used to make a point. I have alway maintained that 10W30 synthetic is perfect for about 90% of peoples daily driver needs. All of my clients in Germany ran 15W50 or 10W40 Synthetic and all did nicely at speeds in excess in 193 KPH or 120 MPH almost daily!
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kj
Dodge Dakota
10/16/2001
19:42:16
| RE: Mobil-1 0W-30 Synthetic Oil
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I would change the filter with every oil change. Mobil recommends regular intervals for their synthetic oil use. They don't promote extended use any more as far as I know. Many people on this board run it 5,000 with no problems as far as I know. Sand, I didn't mean to sound like I was dumping on your info. I was referring to people who think you should run SAE 50 in a tight engine since it worked well in grandpa's old pickup back in '57. On some of my past older vehicles I've used SAE 30 in the summertime and 10W-30 in all other seasons. I see little reason to use anything heavier than something that acts like a 30 weight when hot if your pressure is up to snuff except for a diesel then I would probably use 15W-40. One thing great about America is we all have the right to different opinions. I personally like it because I like input from different trains of thought.
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Snowman
Dodge Dakota
10/17/2001
08:18:43
|  RE: Mobil-1 0W-30 Synthetic Oil
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I have 300,098 miles on my 83 nissan 720 running 5w 30 synthetic blend. If you run hard, go to 10w or above. If you drive like a family man, 5w is fine. I also got a 6% increase in gas mileage when i switched.
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MikeC
Dodge Dakota
10/17/2001
10:31:20
| RE: Mobil-1 0W-30 Synthetic Oil
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I run Mobile Synthetic 10W-30. Can never find a frikkin Mobil filter around my parts though!
Arrrrggg!
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kj
Dodge Dakota
10/17/2001
14:25:11
| RE: Mobil-1 0W-30 Synthetic Oil
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Mike, try K Mart or AutoZone for the Mobil 1 and Advance for a K&N. There might be others but these are all that come to mind right now.
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Don
Dodge Dakota
JOIN HERE
12/27/2004
08:22:53
| RE: Mobil-1 0W-30 Synthetic Oil
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I use 5w30 synthetic, since 3K miles, have
not seen a increase in gas mileage.
Do you think using 0w30 will result in a gas
mileage improvement. 04 Toyota p/u
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sorry
Dodge Dakota
JOIN HERE
12/27/2004
11:48:11
| RE: Mobil-1 0W-30 Synthetic Oil
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this is a DODGE SITE, it, and its users, claim no actual knowledge of vehicles that use rice saki in their fuel tanks.
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JoeK
Dodge Dakota
JOIN HERE
12/27/2004
12:12:39
| RE: Mobil-1 0W-30 Synthetic Oil
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Using measuring techniques that you and I could use, you will not see a difference in gas mileage. As someone posted above, the 0W's marginally increase fuel economy. To the manufactures, who are worried about CAFE standards that apply to all of the vehicles they put onto the road, a very small per-vehicle change translates to a significant increase for the "fleet". To see the difference you would have to use very precise measuring and test techniques.
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MudEater
Dodge Dakota
JOIN HERE
12/27/2004
14:27:45
| RE: Mobil-1 0W-30 Synthetic Oil
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Is any of you guys ever heard of Castrol Synthec 5W-50 and if so, what do you think about it ?
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