I have run Lucas 75/90 gear oil in everything from a 7 second dragster to my 11 second street car.

Not saying its the best, but its never gave me any problems and I can get it locally when needed.


67 Barracuda street/bracket car 11.27-119
68 Dart 502 BB 8.70s-152
414 cid SB Dragster 7.65-174