Tightfisted cynic that I am I've never put super unleaded (91 octane) in my cars. It didn't help I read something that said it wasn't necessary for some cars, it was either carb or fuel injected I couldn't remember so I never bothered.

Feeling un usually generous the other day I put it in my '69 230/8...WOW.

I never would have believed the difference was possible just by switching fuel. acceleration is smoother and it back fires less (yeah I know probably mixture setting plus a bad dashpot unit, broken accel pump nozzle and fuel enrichment diaphram etc.), it also idles faster, I'll have to dial that down a bit as I had it on the high side before to help make up for driveability problems and the gauge seems to be moving to the left much slower. OK I'm sold, even at the 15% cost premium. I almost don't notice the missing ponies of this 2.3.....wait a minute, who am I kidding, I could still use a good 50 more HP so the driving school Corollas stop dusting me off the line.

I may make room in the garage to keep the old gal yet, the car too....