Model Engine Company of America
Why your engine has rust inside.

Rust is caused by moisture from the alcohol based glow fuel. Castor oil provides the best protection but many people don't like the mess it leaves behind after a flight.

Rust occurs as quickly as a few days. Some extreme cases take more time.

When you are finished flying for the day, run your engine dry by removing the fuel line at a moderate speed or allow the fuel tank to run dry. It is best to squirt some MECOA/K&B AFTER RUN OIL in the carburetor, then flip the propeller about 10 to 20 times. This oil will keep castor based fuels from gumming and protect internal engine parts from rust and corrosion. When storing your model between flying sessions, it is best to wrap your engine in a rag or plastic to prevent dust, dirt and moisture from entering the engine. The engine should also be wrapped in a rag at the flying field between flights.

Use a good quality fuel with the formula printed on the label. See also Fuels
The above information is provided as a guide. Since MECOA/K&B has no way of determining the ability of the individual using and understanding this information, we assume absolutely NO RESPONSIBILITY for any damage to person or property from the use of this information.
 

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