Always keep Model Fuel containers tightly sealed. Fuels will pick up moisture from the air causing poor running characteristics.

Model glow fuel is a mixture of nitromethane, methanol, and oil. This mixture is used to cause a catalytic reaction with the platinum element in the glow plug. Without this fuel the glow plug would not continue to glow when the 1 1/2 volt  booster battery is removed. See also Glow plugs and Compression Ratio

General GLOW Fuel Questions:

What fuel should I use for modern ABC, ABN and Ringed aircraft engines?	A good commercially made glow fuel with at least 18% oil content by volume, not by weight. If oil content is measured by weight a minimum of 20% is required. We prefer 50/50 castor/synthetic mix. More castor is fine. 5 to 15% nitro content is adequate for general use. Higher nitro content can be used for competition but customer assumes risk or damage. See also Compression Ratio
What fuel should I use for modern older aircraft engines with lapped steel liners and iron pistons?	A good commercially made glow fuel with at least 20% oil content by volume, not by weight. If oil content is measured by weight a minimum of 22% is required. Preferably all castor oil. 5 to 15% nitro content is adequate for general use. Higher nitro content can be used for competition but customer assumes risk or damage. See also Compression Ratio
What fuel should I use for marine engines?	A good commercially made glow fuel with at least 18% by volume oil content. Nitro content should be around 25%, higher can be used your own risk. As these are racing type engines and the stresses are far beyond regular use, any damage cannot be considered the fault of the manufacturer. See also Compression Ratio NOTE: 15% nitro content is adequate for general use.
What fuel should I use for four strokes?	Four stroke engines (except HP VT's) do not require as much oil as a 2 stroke. Model four strokes get the lubricating oil from blow by past the piston and through the valve guides. Usually 14% oil content is enough.
What fuel should I use for HP VT four stroke engines?	Unlike poppet valve four strokes the HP VT's have a rotary valve which requires an oil film to seal properly. A minimum of 20% oil content (50/50 castor/synthetic) is acceptable. More castor is fine. If the oil content is too low the engine will not draw fuel well or idle properly. This is due to leakage back into the intake manifold disrupting the incoming fuel/air mixture.
What fuel should I use for the KAVAN FK 50?	The MECOA KAVAN FK50 is equipped with a wet oil sump and oil pump. Actually fuel with no oil can be used, however we do recommend 2% oil content . For glow use use Methanol, for spark ignition use fresh unleaded regular 87 octane gasoline. Be sure to use fresh  pump gasoline as the newer less polluting formulas loose their potency within a few months causing the engines to be rather hard to start.
What fuel should I use for car engines?	Model cars run about the same guidelines as boats. A good commercially made glow fuel with at least 18% oil content by volume, not by weight. If oil content is measured by weight a minimum of 20% is required. 5 to 15% nitro content is adequate for general use. Higher nitro content can be used for competition but customer assumes risk or damage.
What fuel should I use for old time spark ignition engines:	Old time spark ignition model engines require a minimum of 25 to 30 % MECOA ignition oil mixed with regular pump gas or Coleman lantern fuel, AKA"white gas". Be sure to use fresh  pump gasoline as the newer less polluting formulas loose their potency within a few months causing the engines to be rather hard to start.
What fuel should I use for Compagnucci ignition engines:	Be sure to use fresh  pump gasoline as the newer less polluting formulas loose their potency within a few months causing the engines to be rather hard to start. Use a mix of good quality synthetic 2 stroke oil in a 40 to 1 mix ratio.

General Gasoline Spark Ignition Fuel Questions:

What fuel should I use for the KAVAN FK 50?	Use fresh unleaded regular 87 octane gasoline. Be sure to use fresh  pump gasoline as the newer less polluting formulas loose their potency within a few months causing the engines to be rather hard to start.
What fuel should I use for old time spark ignition engines:	Old time spark ignition model engines require a minimum of 25 to 30 % MECOA ignition oil mixed with regular pump gas or Coleman lantern fuel, AKA"white gas". Be sure to use fresh  pump gasoline as the newer less polluting formulas loose their potency within a few months causing the engines to be rather hard to start.
What fuel should I use for Compagnucci ignition engines:	Be sure to use fresh  pump gasoline as the newer less polluting formulas loose their potency within a few months causing the engines to be rather hard to start. Use a mix of good quality synthetic 2 stroke oil in a 40 to 1 mix ratio.

General Model Diesel Fuel Questions:

What fuel should I use for Model Diesel engines:

The model diesel engine operates on a fuel based with ether and kerosene as they are a rapidly vaporizing fuel. Do not use automotive diesel fuel. Since model diesels are of two cycle design, oil must be included in the fuel mixture. Ether is a difficult ingredient to acquire. Proper mixture could include the following 33% Kerosene, 33% ether, 32% oil, 2% Amyl nitrate We recommend purchasing premixed model diesel fuel.