Engine Oils

[steveo]

What oil do you guys recommend for running an engine in and also which grade of gearbox oil is recommended??

[MAXIBOY]

any good semi synthetic oil. i use valvoline.

[Mr.AdamB]

mobil 1 0 w 40

[MAXIBOY]

you can,t run an engine in on mobil 1 its too good and does not let the rings bed in.

[stan]

cheapo 10 or 15 /40 is ideal for running engine in. less friction reducers and detergents.

[steveo]

What do you think of that STP engine treatment additive - is it worth it

[MAXIBOY]

forte treatment is good but you need to run the engine in first.

[Purple]

you can,t run an engine in on mobil 1 its too good and does not let the rings bed in.

Something just occurred to me, I always switch to synthetic oil on my new cars by second oil change. Maybe that's the reason why it take a few thousand miles for the engines to loosen itself. But then again, I have not had any problems with them, other then slow bed in.

[MAXIBOY]

engines always take time usually ten thousands miles to really loosen up. mobil 1 is so good i,ve known it stop rings running in. even had to restrip an engine for a customer and rehone it with new rings. used mobil 1 from new and it was drinking oil as the rings failed to bed in.

[Purple]

In my case, I mostly use Carlube synthetic (or some other economy syn oil) which is probably halfway between Mobil 1 and semi-syn. Mobil 1 is too expensive for my quick oil change habit anyway.