02-22-2016, 11:18 AM
I never used additives until I let an old CB sit with half a tank of gas for a year. Wouldn't run at all after. I ended up putting an inline fuel filter in and started running Seafoam through it. Every three or four tanks I had to change that filter because of all the varnish that came out of that tank. Eventually it cleared up and ran great after that. I have been adding a splash here and there ever since.
As far as octane ratings go the higher octane fuel resists detonation. that is why it doesn't knock in high compression engines. Most engines since the switch to EFI will compensate for knock. In my opinion anything over 10:1 compression you will be better off with 92 or above gas, and there is the added benefit of no ethanol.
As far as octane ratings go the higher octane fuel resists detonation. that is why it doesn't knock in high compression engines. Most engines since the switch to EFI will compensate for knock. In my opinion anything over 10:1 compression you will be better off with 92 or above gas, and there is the added benefit of no ethanol.