Ethanol fuel, often lauded for its environmental benefits, has become a common additive in gasoline. However, its impact on older engines and systems is a topic of concern for many vehicle owners.

Rotary has unveiled new fuel stabilizers and treatment additives for small engines. A complete line of products is featured in Rotary’s 2023 master parts catalog including STA-BIL, Ethanol Shield, PRI ...

Folks have been experimenting with ethanol in modern combustion engines even when they weren't so modern. Nicolaus Otto, the inventor of the traditional four-cycle engine, used it to power one of his ...