Ethanol vs. Non-Ethanol: The True Impact on Small Engine Gaskets

The debate over Ethanol-blended fuel (E10) is one of the most persistent topics in the small engine repair world. While much of the discussion focuses on water absorption and carburetor clogging, there’s one component that quietly takes the brunt of ethanol’s chemical power: the gasket.

For mechanics and informed equipment owners, understanding how E10 fuel interacts with sealing materials is key to preventing costly fuel system failures and engine downtime.

Here is the definitive look at the true impact of ethanol on small engine gaskets and seals.