In the past, most powersports engines included coolant passages around the cylinder and head only, not within the engine block, like a car engine. These metals provide a strong, lightweight alternative to iron, but they are more sensitive to water quality and corrosion.Įngine configuration also can place increased demand on the coolant’s ability to fight corrosion. Most powersports cooling systems use increased aluminum compared to passenger-car cooling systems. If “dissipate heat” is the number-one task of motorcycle, ATV, dirt bike and other powersports coolant, preventing corrosion is task 1B. Motorcycle coolant must prevent corrosion AMSOIL Powersports Antifreeze & Coolant prevents boil-over up to 108☌. The coolant’s boil-over rating gives an idea how well it protects against heat. Most powersports applications, including motorcycles, ATVs and dirt bikes, require use of ethylene glycol coolant since it does a great job dissipating heat. The motorcycle coolant has to absorb heat and carry it to the radiator where it dissipates into the atmosphere. Then it’s a matter of time until the engine fails. The cylinder head can warp and create a head-gasket leak. The piston, for example, can expand too much and scuff against the cylinder wall. Extreme heat, however, can cause metal parts to expand beyond tolerances, causing metal-to-metal contact. Metal expands when hot, and your motorcycle’s engine was built to allow for a certain amount of metal expansion. Reducing engine heat is the coolant’s number-one task. The combustion chamber creates intense heat, easily hitting 816☌, depending on operating conditions, ambient weather, and engine configuration. Here’s what to look for next time you plan to change motorcycle coolant. But using a good antifreeze and coolant is important to protecting your bike against extreme heat and corrosion. It tends to be out of sight, out of mind. Changing motorcycle coolant is easy to overlook when maintaining your bike.
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