Those with S/C 4V's

[JarHeadTex]

What engine oil are you guys running ? I am running Valvoline s5w/40. The previous owner was using 20/50. It is burning some oil, but I guess that is common with the 4V?
Thanks

[greenbullitt]

some mod motors have problems with oil consumption. I like using custom pistons with a more desirable ring pack when building them...are you sure you arent losing oil through the pcv system being as its supercharged?

[JarHeadTex]

some mod motors have problems with oil consumption. I like using custom pistons with a more desirable ring pack when building them...are you sure you arent losing oil through the pcv system being as its supercharged?

Could be....Im just curious as to what oil weight and brand some of you more experienced gearheads are using thats all.

[shumpertdavid]

Valvoline 5w\30 for me. I run what my machinist tells me too based on bearing clearance.

[STRONGNUFF]

Mobile 1 5-30 here

[91CoupeMike]

I've seen them use 5w50 aswell.

[terminator03]

i always run mobile 1 5w-20

[d1tko]

5w20 or 5w30

[Trick Pony]

I run Amsoil 5w20. Mod motors have tighter clearances than old pushrod motors so I wouldn't use anything too heavy.

[Dan03mach]

M1 5w30