Explosive

Just wondered what oil you guys run ? When we built our motor we ran break in oil. Then i did a few oil changes with regular ole motorcraft 5W30 but I think I'm going to switch now. I was thinking about 10W30. Thoughts ?

AFR 165's
E-303
Edelbrock air gap
roller rockers ect.

Bubba 95SN

I use 10-30 Castrol

Gregflores95gt

I've always ran 10-40
But it is very hot where I'm at so I think it's pretty good

Canary94GT

I run 10w-30, but it doesn't get much colder than 30* F during the winter here.

projectresto83

I run 10w30 in my pushrod motors whether its 120* here in Texas or -20* back home in Indiana.

tohoopty

i always got 10w40 in mine

67mustang302

Amsoil Dominator 15w-50. Heavier oil protects better.

Factory oil weight is based on mileage standards, so they move to the light side. If you plan on flogging an engine I wouldn't run anything less than a 40wt.

Explosive

Alright. I think I'm gonna run 10W30 The coldest temps it'll ever get driven in is 50-55*

mustangGT86_05

Not exactly true, it provides more cusion, but it also can't fit fit into smaller clearances. If it can't fit into them, they don't have any protection. That's why we don't run gear oil in our engines lol

I was told previous owners run 10w40 in my engine, so that's what I use.

uedlose

15-40 here Shell Rotella