1970 roadrunner 440 engine oil

[RemCharger]

View attachment 1345586

He's getting there. If you truly want the best mileage , run 0- 10 ultra synthetic and about 2 1/2 qts including the filter.
Follow along for more outstanding advice.

 

[71Beeper]

If you want to run a good synthetic oil with the most zinc in it - try this.

It's also available in a 10w-40 grade.

 

[Geoff 2]

If you use 0-10, carry a large container to pick up the engine pieces.....