13 years ago my engine builder told me to use Delo LE 400 15w/40 with a bottle of Comp Cams Oil
additive. I've been running it ever since. I did notice that they came out with a new formula (Delo 400 SDE) with lower Zinc. I still can find the Delo LE formula.

[img]http://www.imgur.com/hxlGUJt.gif[/img]
4-speed
3:54 Dana
13.01 @107.93 with street tires (not hooking up)