your experience


Why not MOGAS?

Why not MOGAS?


Common practice to increase the octane number is the use of ethanol or ETBE compounds. The use of alcohol in gasoline has many negative effects on the aircraft engine as well as its parts, such as rubber, plastic and composite elements. Not only can they damage these elements, but also allow the plastic and rubber molecules to get into the fuel system. The gasoline filtration system can become clogged or partially clogged. MOGAS fuel users must more often do detailed inspections to avoid fuel system malfunctions or even damage to the aircraft engine.


Icing of the carburetor. Due to the increased volatility MOGAS, the occurrence of the phenomenon of “vapor lock” is more likely. Especially after using the engine at the maximum operating temperature. Icing the carburetor occurs much faster than in the case of WA UL91.
MOGAS absorbs much more heat during the process of mixing fuel with air and can therefore be subject to higher cooling during evaporation. The result of this is the accumulation of ice near the carburetor.


aviation fuels are subjected to very rigorous inspections, which are designed to preserve 100% purity of AVGASU. Quality standards impose monitoring on all stages of preparation of ingredients and production, by transport, storage at the customer’s place in dedicated containers until it is poured into an airplane tank. However, the main disadvantage of MOGAS car fuel is the lack of thorough check for pollution after leaving the refinery. It happens that during transport and storage, improper ingredients get into it, which negatively affect the functioning
of the engine and the fuel system.


In many cases MOGAS is stored in containers not intended for aviation, e.g. made of plastic. There have repeatedly occurred instances of static charge suspension during refueling.

Do not risk with MOGAS. Your safety is the most important!