raylloyd, Dealer recommended 89 oct, said 93 would run too hot, I have consistently obtained 46-50 mpg. 46 mpg when I was really letting getting on her shifting around 6000 rpm. I have often thought of running 87 oct but I know 89 burns cleaner. One area not mentioned is the brand of gas, Suncoc, Mobile seemed to work well, Getty was not good or was it he station. I’ve never tried Shell ( in NW CT $.05-.10 more per gall) and no way will I use Cumberland gas even if its listed as Gulf.
