Check out ZDDPlus

http://www.zddplus.com/

I have not used it yet but it sounds good. The advertise some of the pro and con compared to racing oil and diesel oil. Eastwood sells it as well as a few others for $10 (4 oz) used per 4 or 5 quarts. For comparison Jegs sells that ZR-1 racing oil at $12 per quart.

More $0.02 to consider.


1946 Chevy Half Ton
('56 235, '86 T5, '79 Camaro Z28 rear end, working on the '85 Jaguar XJ6 IFS)
1976 Margay Panther X, MC91B