The Driven Racing Oil Carb Defender Race Concentrate Fuel Additive from Joe Gibbs Driven has been developed for carburettor race engines which run Methanol, E85 or oxygenated race fuels. It has been specially formulated with additives that will protect your carburetor from corrosion. Some fuels that contain Methanol and Ethanol can cause damage, this Carb Defender Concentrate has special corrosion inhibitors that work to prevent damage.Controls combustion chamber residueVisual side strip so you can measure the correct amount of additive to put inCleans and protects surfaces of the fuel system and intake tractFormulated to protect against ethanol corrosionContains a multi functional lubrication so 'top lubes' are not requiredMethanol and Ethanol fuels attract moisture and can lead to corrosion in the fuel system. This Carb Defender prevents this as well as controlling combustion chamber residue and protecting all surfaces of the fuel system from the tank to the intake.Simply add it to t