[buzzinhalfdozen]

No where in either of those posts did you offer anything more than YOUR opinion, you bad mouthed a few oil brands of which you've probably never ran, you stated you've ran Mobil1 for26 years though your engine has nothing in commom with the OP's. You completely failed to answer my question of what class "E" is, you've expressed YOUR truth, offered no facts so once again you've offered information irrelevent to the thread. IF you respond please include your S/S class and how far under the index your perfectly scienced out "S/S legal" unit runs as I've looked again and fail to see the "E" designation. FWIW it's OK to be a bracket racer, we all are to a point but at least have the stones to fess up to it, and quit giving bracket racer advice to racers who are trying to make their stuff FAST!