|
| Search | Car Forums | Gallery | Articles | Helper | Air Dried Fresh Beef Dog Food | IgorSushko.com | Corporate |
|
#17
08-04-2008, 12:08 PM
|
||||
|
||||
|
Re: High Mileage Engine - Oil
No, drop the 10w40 and run. Run far away. And fast.
10w40 has the worst possible viscosity index and it breaks down if you look at it wrong. 20w50 is not bad for a high mileage engine. 10w30 is better for the engine than 10w40.
__________________
1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1! 2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness! 1967 El Camino L79/M20 old school asphalt raper Remember - a government that is strong enough to give you everything you need, is also strong enough to take everything you have. 
|
|
#18
08-04-2008, 02:56 PM
|
||||
|
||||
|
Re: High Mileage Engine - Oil
Wow.... my ATV calls for 10W-40. May have something to do with the fact that is has wet clutch. So if the "W" number is the weight or thickness of the oil, whats the second number indicate (the '30' in 10W-30 for instance)?
__________________
|
|
#19
08-04-2008, 07:49 PM
|
||||
|
||||
|
Re: High Mileage Engine - Oil
The "W" means "Winter", i.e. the oil has the consistency of 10 wt straight oil when it's cold which helps a cold engine start faster. As it heats up, it takes on the consistency of hot 40 wt. oil.
Multi viscosity oil is a misnomer - all oil thins as it heats. 'Multi vis' oils have viscosity index improvers which help it to maintain its viscosity over a wider range of temperatures than a straight oil does. In other words, while straight oils get considerably thinner, a multi vis oil tends to keep its viscosity. So, where a straight 30 oil has a certain viscosity as it's cold, as it heats up it may thin all the way down to a viscosity equivalent to a 10w cold oil, if not more. 10w-30 oil might start out at 10 cold, and keep its consistency to where it's still like a 30 hot or 10 cold.
__________________
1988 9C1 - Modified LM1 @ 275HP/350TQ - TH700R4 - 3.08 8.5" Disc Rear - see it at http://www.silicon212.org/9c1! 2005 Crown Vic P71 - former AZ DPS - 4.6 liters of pure creamy slothness! 1967 El Camino L79/M20 old school asphalt raper Remember - a government that is strong enough to give you everything you need, is also strong enough to take everything you have.
|
|
#20
08-04-2008, 08:06 PM
|
|||
|
|||
|
Re: High Mileage Engine - Oil
Quote:
|
|
#21
08-04-2008, 10:28 PM
|
||||
|
||||
|
Re: High Mileage Engine - Oil
That was before I was born... but now that you say something I vaguely remember someone sometime saying something about a certain oil that should NEVER be used in GM cars. That must've been it. Anyway... so 20W-50 would be better for higher mileage engines because it's thicker at all temperature levels. I understand now. Thanks!!
__________________
|
|
#22
08-04-2008, 11:09 PM
|
|||
|
|||
|
Re: High Mileage Engine - Oil
Quote:
Quote:
|
|
#24
08-05-2008, 09:03 AM
|
|||
|
|||
|
Re: High Mileage Engine - Oil
Quote:
I was told to use 20-50wt in my boat engine,it called for 30wt... this is also good for high mileage engines in hot weather...10-40wt lacks the proper lubrication required.. synthetic can take the heat and is great for maintaining its viscosity.. my son had a very worn engine 400mi/quart...I added synthetic drained from my impala when I did an oil change on it ..and the oil consumption dropped to about 600mi/quart...
|
|
 |
POST REPLY TO THIS THREAD |
 |
|
|
