Big Flick said:
How many miles are on your truck? If there is over 100000 you should change it every 3-5 thousand miles and if you are running synthetic you should change every 3000 regardless.
that doesn't make any sense... synthetic oil lasts longer than dyno oil. (true synthetic, mobile 1 isn't a true synthetic anymore)
MOBIL 1- It's a Group III hydrocracked mineral oil.
that being said, i use Castrol German 0W-30 along with NAPA/wix filters (proven to be the best aside from brands like Canton).
don't tell me that 0w30 is too thin until you do some real, solid research.
i change my oil every 6k miles, filter at 3k miles.
i don't understand why you say to change synthetic at 3k regardless. if anything, you should change regular dyno oil at 3k regardless. a true synthetic will outlast a dyno oil, bar none.
-shaeff