I remember reading, that 93 octane, because it burns cooler, was causing the piston rings to gum up and possibly start using oil. The reason people were using ring free.
BallsCasten
Extreme
The best way to explain it is that there are more BTU’s (energy) in lower octane fuels. The addition of octane boosting addatives (Xylol to name one) lowers that BTU rating.
Unless the engine is tuned to run higher-octane fuels, it is a waste.
Unless the engine is tuned to run higher-octane fuels, it is a waste.
vmaxcrazy
Pro
2007warrenp said:
Higher octane burns slower and does't get as hot. You only need to burn higher octane if you boost compression. Higher compression causes a hotter combustion, so you would need a slower burn (higher octane) fuel.
