Best Fuel Preservative for Pure Gas ???
I buy pure (no ethanol) gasoline that I keep on hand in a couple of 5-gallon cans for snow blowers, lawn mowers, power washers, portable generators etc. The STABIL products that I buy indicate their ...
Forum Discussion
JaxDad wrote:Cummins12V98 wrote:
I am curious why some run premium when their small engines only require regular gas?
Simple. Most premium fuel is also ethanol free gasoline.
In bigger engines the benefits go far beyond not having gummed up carb’s, the net cost per mile is lower running premium gas than regular gas.
The increased fuel mileage exceeds the increased cost per gallon.
Premium gas doesn’t increase fuel mileage. Octane isn’t a measure of energy content, it’s a component that reduces the premature ignition of the fuel/air mixture from engine compression (like a Diesel). High performance engines run higher compression so premium fuel benefits them. Running premium in an engine that doesn’t need it has no benefit and can have negative consequences of increased carbon build up in the engine.
Most premium fuel is not ethanol free, but most ethanol free fuel is premium.
