I'd have it of it was my choice. But the guys property that's its on is locked up cause he had to go out of town for a funeral. So I can't get it till he's back. I need to find a trailer to get it home with
Yes, if you can get true 93 then mix it half and half with 87, it actually comes out higher, do not know how but it does, we have to do this on our el camino with an olds 403. if we run 91-93 or 87 it pings, if we mix it 50/50 then no ping.
If you mix 93 octane and 87 octane you get 89 octane. No one truly blends an 89 octane any longer so when you select 89 at the pump it blends regular and super as it comes out. Any time you mix a higher rated octane fuel with a lower rated octane fuel, It will lower the overall octane.
That piston is all scratched up. I would send it back