Oil for 440

[Mike D]

I just broke in the 440. What is the best oil to start using now.

 

[V.R.D]

use an oil with zinc in it 10 w 40 is good 20 w 50 is best a lot of performance oils have zinc in them. i like amsoil oil best.

 

[Mike D]

use an oil with zinc in it 10 w 40 is good 20 w 50 is best a lot of performance oils have zinc in them. i like amsoil oil best.

Thank you

 

[V.R.D]

Thank you

your welcome

 

[69hemibeep]

It depends on the machine work as to how tight the engine is as far as bearings go. A 10 w 30 usually is good to heavy and you loose power and gas mileage.
I agree on the zinc unless you have a roller cam and electric fuel pump

 

[peresvet24]

Welcome! Nice runner!

 

[Russ69Runner]

T4 10w 40 Rotella it has Zink in it but still put a small bottle of Zink additive in also. New 383 just rebuilt. Solid lifter's and new cam. So this is what my engine builder say he tells all of his customer's to use even ford's and Chevy's. With flat tappet's. Have fun nice car.

 

[TOMRR]

I used the 20/50 in my 440

 

[nevada dan]

my last 440 i ran 20/50 valvoline , it was in extreme heat to very cold , i beat the hell out of that engine for 10 years , never let me down, I'll admit it's a little heavy for freezing weather but it kept that engine in great condition, sold it to my friend and he beat it and was still running great when he sold it

 

[Russ69Runner]

I stand corrected on the Rotella. T4 15-40 is what I am using. Looked at my bottle today. With sink additive.