skyman51
Well-Known Member
I have a 1967 GTX with the original Hemi motor. It was rebuilt by the best, Larry Sheperd, of Hemi's only. He has been building and rebuilding Hemi's for 50 years and written numerous books. Here are his recommendations for a class hemi that only occasionally is driven.
Pennzoil 20w50 racing oil with a ZDDp addatve. Sunoco 93 ultra gas with either Stabil 360 or Star Tron, four ounces with every tank of gas. Av gas has addatives that are not good and actually has too much lead as does race fuel. He says it will fouled plugs and cause a build up on the valves. I follow his advice and my car has been perfect for over three years.
Pennzoil 20w50 racing oil with a ZDDp addatve. Sunoco 93 ultra gas with either Stabil 360 or Star Tron, four ounces with every tank of gas. Av gas has addatives that are not good and actually has too much lead as does race fuel. He says it will fouled plugs and cause a build up on the valves. I follow his advice and my car has been perfect for over three years.