[Tim Penton]

Dan, I've been using Royal Purple with good results with my Chevelles. Reher Morrison recommended Royal Purple to me. On my regular use vehicles I use Mobil One also with good results and no problems. I could not find any fairly recent comparisons on the net. The older comparisons that I found showed excellent results for Amsoil. By the way my Dad used Rotella T on his tripoli turquoise '68 L78 Chevelle with great results in 1968. The results were 12.20s on street tires, stock with the mufflers pulled off the exhaust pipes with the stock exhaust manifolds. This was at the now closed Laplace Drag Strip in Laplace, La. Also, Dad said that his car was a California car with the emmissions that was also taken off by him. He said that his Chevelle always ran better than other comparable '68 Chevelles. He seemed to think that something was different about the performance of his California emissions equiped car.