Best oil for 4.2L?
#31
Originally Posted by rampro
I have a 2003 f150 single cab silver with a 4.2 with 150,258 miles on it, I used to use nothing but mobile 1 full synthetic but i quit using it due to a major change of oil that gave my truck a whole lot of more power and better acceleration, It is the quaker state horsepower 10-w30 and a puralator oil filter,I get great start ups in the mornings too..... I get the best prices at advanced auto parts.
#33
#34
Originally Posted by Raptor05121
Well Im not an expert here, but we're learning about oil into AutoTech class in school and our instructor tells us lighter oils start better than heavier oils because of lighter viscosity and all.
#36
Originally Posted by Peacemaker
They do. Lighter viscosity oils work their way through the engine faster on a cold startup, thus reducing wear. 5W-20 or 5W-30 oil is a good choice for production engines of today because of tighter engine tolerances and clearances. A thinner weight oil would work best for this situation. And for those who don't know this, an oil's weight rating, (or the number before the "W") is the oil's weight at cold startup. The viscosity rating is the number to the right of the weight rating (ie. 5W-"X"). That number indicates an oil's viscosity when the engine reaches full operating temperature.
#37
Originally Posted by Raptor05121
Yeah, thats cool. I just learned this like a few days ago. This is the reason I'm going to be switching from Penzoil 5W-30 to Mobile 1 5W-20 Synthetic on my next oil change (996 miles and counting...)
#38
oil
I just had really good luck though on the quaker state horsepower 10w30 Full synthetic. I just felt a big change in my performance with the 10w30 ,i used to use mobile 1 5w30 and worked good but the quaker state horsepower changed my mind.Thats just my opinion.
Last edited by rampro; 02-02-2008 at 10:47 PM.
#39
5W20 is CRAP
#40
#41