Best Motor Oil
 

what is the best motor oil to use and what weight ? i have a rebuilt lt1 with little under 30k

i like mobil 1 5w30 synthetic ive used it in every car ive owned

Edit: I dont use castrol but the comercial is hilarious!!
http://www.youtube.com/watch?v=Mj5ms9PJDNY

this is probably going to start a debate .. again.

Everybody is going to give a different opinion.

The best motor oil is one that has a decent life and will protect your engine well. Just about every off the shelf oil will do this. In my opinion, engines with oil problems don't fail because of crappy oil, they do because of oil starvation.

i didnt claim it to be the best, i just said thats what i like, i think it depends on application and personal preference, im sure its all the same stuff comes from the same ground sold to us by the same arabs

:popcorn:

what thread is this from? im curious to read why he is so against mobil 1


EDIT: Ok i found the thread where EchoMirage hates on mobil 1 but he doesnt really offer any reason why

Amsoil synthetic
The viscosity depends on how the engine was built, what bearings were used and what the clearances are. Also the way the car gets driven and where/when makes a difference as well.

what do you think of 10w30 quaker state peak performance

me too

i like to use Royal Purple 5w-30

http://www.bobistheoilguy.com/forums/ubbthreads.php

that is the place to ask about oil. there are people on there with degrees in the field rather than people with opinions.

RP 10w30.

But I think that if you are changing your oil every 3k miles, whatever oil you use should be fine.

quaker state= NG

eh. i use what comes out of the drums @ work for the newer cars... flat tappet cam cars, i use delo/delvac diesel oil.

I used to run mobil 1 then switched to royal purple. The valvetrain is noticeably quieter with RP, and oil pressure was better at idle.

RP 5w30 !

engine clearances, spring pressure, lifter type, etc..etc....etc...all play a role in picking the right weight and brand oil. i personally use and now sell brad penn. for all apps. if u can get a hold of an oil comparison chart u will see that brad penn is low moly and high zinc, which makes for the perfect oil. royal purple, and amsoil are also a good chice.