| From | Message |
Oily
Dodge Dakota
JOIN HERE
2/16/2006
11:59:09
|
 Subject: 10W-40 motor oil
IP: Logged
Message:
can i use 10w-40 motor oil with a 3.9 98 dak?
|
spt
Dodge Dakota
JOIN HERE
2/16/2006
12:08:46
| RE: 10W-40 motor oil
IP: Logged
Message:
10w-40 motor oil is not good for any motor. Copy and paste this link and read section 4.
http://www.repairfaq.org/filipg/AUTO/F_oil_facts.html
|
Dark Jedi
Dodge Dakota
JOIN HERE
2/16/2006
14:44:29
| RE: 10W-40 motor oil
IP: Logged
Message:
that's not true SPT. a lot of German cars run 40 weight oils. hell the ferrari runs a 50 to 60 weight oil.
oily to use 10w40 you might be able too. I will not say you can or cant. but depends on where you live. if its very cold I would say no. but you use a thicker weight oil and your fuel mileage will go down a lot. a lot of people run a 40 weight oil in higher mileage vehicles due to tolerances are a lot looser beings the wear on the engines.
I would recommend going to http://theoildrop.server101.com/ubb/ultimatebb.php
read about what people chooses on oils. I run German castrol synthetic 0w-30 which tested is almost a 40 weight oil. my 4.7 runs fine. actually runs better than with M-1 5w-30. I have seen about a 2 MPG drop in my mileage but engine runs smoother. a lot of people run heavier weight oils to quiet valve chatter, piston slap, rod knocks. in the end its up to you. you can try it and if the engine don't like it can always drain and put it back to a 30 weight oil.
|
.boB
Dodge Dakota
JOIN HERE
2/16/2006
14:44:56
| RE: 10W-40 motor oil
IP: Logged
Message:
That's pretty interesting reading. I use Mobile 1 5W-30 in my truck for other reasons. But this is just one more reason to continue.
|
spt
Dodge Dakota
JOIN HERE
2/16/2006
21:34:13
| RE: 10W-40 motor oil
IP: Logged
Message:
Dark Jedi Im not saying running a 40 weight oil or heavier is bad, what I am saying is that 10w40 oil needs a lot of polymers to maintain its integrity while in use and can break down and do nasty things to your motor. Read the article.
|
daddio
Dodge Dakota
JOIN HERE
2/16/2006
22:41:31
| RE: 10W-40 motor oil
IP: Logged
Message:
very interesting read. i run 10w-30 in my dak and the wifes car. my son's '93 saturn gets 15w-40 only in the summer. it uses about a quart every 2k miles and has over 200k on it now.
|
Bob Lincoln
Dodge Dakota
JOIN HERE
2/17/2006
08:21:01
| RE: 10W-40 motor oil
IP: Logged
Message:
Funny, I ran 10W-40 in two slant sixes for a total of 120,000 miles and in a 2.2L for 157,000 miles, and in my 2.5L for most of the first 200,000 miles, and none of these engines suffered at all. I don't believe you.
|
Oily
Dodge Dakota
JOIN HERE
2/17/2006
08:36:56
| RE: 10W-40 motor oil
IP: Logged
Message:
thanks for all that info.
the reason i asked is because here in germany you can't get 10w-30 anywhere. there are a couple of 5w-30 but they are hell of expensive.
10w-40 is really cheap and readily available.
Will 5w-30 affect milage negativly?
|
spt
Dodge Dakota
JOIN HERE
2/17/2006
12:10:56
| RE: 10W-40 motor oil
IP: Logged
Message:
Bob Lincoln I do not care if you believe me or not. I am not making this stuff up. I am just posting an article with facts and everyone can make up there mind if they want to use the stuff they can. I would not put 10w40 in my truck. Here is some more info
http://motorcycleinfo.calsci.com/Oils1.html
I realize that this is a motorcycle site but the first half of the article is general info about oil and is very informative.
|
Dark Jedi
Dodge Dakota
JOIN HERE
2/17/2006
14:24:00
| RE: 10W-40 motor oil
IP: Logged
Message:
oily 5w-30 wont effect your mileage like 10w-40. got to remember the 5w-30 will be thinner than the 40. so your engine will be able to push it better. .
you have a manual? look in there and see what it calls for. I dont see a prob running the 40w. but if its cold I would prob say not too.
|
Mann
Dodge Dakota
JOIN HERE
2/20/2006
22:49:05
| RE: 10W-40 motor oil
IP: Logged
Message:
Belive half of what you see and none of what you read when it comes to those so called "expert" reports. I've run 10W-40 and sometimes 20W-50 in every vehicle I've owned. I have consistently gotten over 200K on stock engines. That is no rebuilds. If you operate where it is consistantly over 90 degrees like I am, it's best to run a 40 weight. The only time I ran 10W-30 was in winter the few years I lived way up north, 30 miles from Canada.
|
Oily
Dodge Dakota
JOIN HERE
2/27/2006
15:48:16
| RE: 10W-40 motor oil
IP: Logged
Message:
i found a good source for mobil 1 5w-30 at a reasonable price.
i just changed the oil today, and im really satisfied with the result. the motor seems much smoother now.
as far as mpg is concerned i can't really tell yet.
thanks for all your advice
|
AmsoilSponsor
DakotaEnthusiast
2/28/2006
03:51:26
|  RE: 10W-40 motor oil
IP: Logged
Message:
VISCOSITY
It is almost certain that higher viscosity oils, such as Xw-40 and Xw-50, are complete wastes of energy, placing undue strain on your engine, and raising operating temperatures for no real benefit.
VISCOSITY ... in the general term is defined as " a fluids resistance to flow". It is a measure of the internal friction of the fluid or the resistance to the movement of one layer of molecules relative to an adjacent layer.
THE LOWER (SMALLER or FIRST #, as in "10w-_) NUMBER ... is the Cold Cranking Measurement, made at low temperatures, using a concentric cylinder viscometer to predict the oils cranking resistance in an engine during cold starting.
The measuring devices, or viscosmeters, most often used are in the form of close-fitting concentric cylinders. The fluid being evaluated is placed between the cylinder walls, the outer cylinder is held stationary and the inner cylinder is rotated. The speed of rotation is measured for a given force to calculate the viscosity, most commonly reported in cp or centipoise units. Also known as Absolute Viscosity.
THE HIGHER (BIGGER or SECOND #, as in "-30") NUMBER ... is commonly measured in capilary tubes, in which the time for a fixed volume of fluid to flow through the tube under gravity at operating temp (100c)is measured and reported as cSt or centistokes. This is used most commonly to report the normal operating viscosity of motor oils or the higher number.
A 0w-30, 5w-30 and 10w-30 oil are ALL 30 weight oils at operating temperature (approximately 10 minutes afterr starting the engine). Your concern should be with the Cold Cranking Measurement since you need to get lubrication at start up.
__________________________________________________
The Importance of VISCOSITY
All metal engine parts need to be separated from each other while moving in order to prevent friction and wear on the parts. This in done in modern production engines using a thin film of oil (usually less than 1/10,000 of an inch thick). Oil’s viscosity, in part, determines how thick a film the oil will form between moving parts, and how much friction there will be between those parts when separated by the oil.
Higher viscosity means thicker oil films and more friction within the oil. Obviously, one wants a viscosity high enough to prevent parts from grinding against each other, but no higher than that, because any more results in excessive friction within the oil, leading to excess heat and power loss. The ideal oil would provide the minimum required viscosity under all conditions.
Unfortunately, an oil’s viscosity diminishes with increasing temperature, necessitating the use of an oil which will have the minimum required viscosity at the highest expected temperature, and greater than optimal viscosity at lower temperatures.
Winter Prepration
Note: Since Winter is upon us, ... I will repeat the following (but in different words) ... the first number, preceding the ‘w’ (for Winter), is an oil’s viscosity grade, is an indication of low-temperature performance -- the lower the better. The lower winter viscosity grades will be more valuable in colder climates. 10w- generally flows and pumps fine at four degrees below zero on the Fahrenheit scale, and each grade below that buys you another nine degrees. Synthetic oil is vastly superior to conventional oil in its low-temperature pumpability, high-temperature stability, long-drain capability, and high lubricity (low friction).
The second number represents the oil’s high-temperature viscosity, but higher is not always better! One wants to choose the minimum viscosity that results in an oil film thick enough to prevent wear at the temperatures one expects to encounter. Only the engineers that designed the engine know what viscosity is required to provide adequate film thickness without unnecessary friction, so you should certainly try to remain within manufacturers guidelines. For what it’s worth, I trust the engineers.
It is almost certain that higher viscosity oils, such as Xw-40 and Xw-50, are complete wastes of energy, placing undue strain on your engine, and raising operating temperatures for no real benefit.
__________
Cold Crank / VISCOSITY GRADE
"0"W-__ is a viscosity GRADE, not a viscosity MEASUREMENT.
When testing for cold fluidity, the temperature is lowered approximately 5 degrees centigrade between each test.
The Cold Crank Simulator Apparent Viscosity is tested at:
-20 C for 10w- ..... (-20 C = -4 F)
-25 C for 5w- ....... (-25 C = -13 F)
-30 C for 0w- ....... (-30 C = -22 F)
It is my understanding that the oil has to be labelled at the lowest temperature it meets the specifications.
It may not be long before someone comes out with a " -5w-30 " which would correspond with -35 C. (- 35 C = - 31 F)
__________________________________________________
You can REQUEST A FREE AMSOIL CATALOG by clicking below.
Steven Roark , Amsoil Dealer , Proud Sponsor of www.DodgeDakotas.com
AMSOIL Synthetic Motor Oils, Lubricants, Filtration, and Truck Care Products
|
| | P 1 |
|
Post a reply to this message:
Username Registration: Optional
All visitors are allowed to post messages
|
