Originally Posted by DrCharles
Interesting... there does seem to be quite a bit of discussion on the subject of additives!
I found this brief article: https://www.onallcylinders.com/2018...h-off-the-shelf-motor-oil-to-save-money/
So what's YOUR favorite flat-tappet-safe oil? popcorn


Rotella or Delvac 15w40. My engine guy runs Valvoline 15w40 in his HRL hydroplane engines. 350 SBC and 2.5 liter Fords. No roller cams. 7000+ RPM for 5 laps plus heat races.

Kevin