what weight oil should i use

[trbodrt]

close to 10.5 to 1 compression hydraulic cam, stock stroke 360, I can get plenty of free oil from work that is 5-40, is the lower number to thin?

 

[1970Duster]

Nope that 5w will be fine, but it depends on where you live and what you use the motor/car for.Though I run 5w-30 full syn. You may need to add zinc if your cam is a flat tappet both not if you have a roller cam like me.

 

[bamamopar]

i run 10 30 full syn in my 360

 

[Bulldozer]

i use 10/40 full synthetic year round in all my mopar V8s

 

[trbodrt]

im in southern cali, im running a hydraulic flat tappet. thanks for the advice guys, the oil is penzoil ultra 5w-40 euro full synthetic, from what i've been reading it looks like it has zinc in it.

 

[airwoofer]

That word "euro" is the key to that oil from what I have read. Supposed to be good stuff and if I could get it for free it would be in my stroker and would get changed really often.

 

[Gator]

10W-40 Pennzoil with a can of STP for the Zinc. Been running this combo for many years on my last 3 Hi Performance Mopars and has treated me real well... No engine problems at all.

 

[66340SEDAN]

I run 15W40 Rotella T in my 340

 

[jimjimjimmy]

I run 15W40 Rotella T in my 340

x2 with lucas zinc add in my 416

 

[Mopar44134]

10/40 in my 360 roller cam motor.

 

[C130 Chief]

The euro oil probably is ACEA A3 rated. Which translates to "good stuff". The ACEA standards are based on a test to metal failure, while our API specs are just that, a specification or minimum recipe.

That said, I run Shell Rotella T6 (5w40 full synthetic) or Mobil 1 Turbodiesel Truck (5w40 full synthetic) in everything I own.

 

[msbaugh]

I like the valvoline vr1, has plenty of zinc for flat tappet

 

[bryan340]

5w-40 mobil delvac diesel oil in my 408 and my 05 cummins ram !