The closest station to me sells only up to 91 Octane. Is it OK with Hot Cam car?

 

you could always buy some octane booster if it doesn't work out.

 

That's not likely to do much sine the 104 in the 104 Octane boost only raises octane ratings by 0.04 and that probably only to 1 gallon of gas. Waste of money, is that.

I could drive a bit further!

It's no big deal driving further, but 91 is cheaper, and the local station is a lot cheaper than most others so I just wondered whether it would be Ok to use 91 for regular driving, and 93 for track sessions.

 

here in CA, you only can get 91 as the highest

 

I thought that was the case, but I wasn't sure, so I asked.

Any issues? Car works OK? Any knock retard problems?