You must be careful here, as HOAT technology coolants can contain phosphates and silicates, which could damage your motorcycle engine. Ethylene GlycolĮthylene glycol coolants use an extended version of the OAT formulation called hybrid organic-acid technology (HOAT). These coolants are typically green or orange in color. The organic acids give natural rust prevention and a prolonged lifespan for the coolant, and they are suitable for steel, cast iron, and aluminum engines.Ī significant advantage of propylene glycol coolants is that they are not toxic and are kinder to the environment. Propylene glycol coolants use organic-acid technology (OAT) and are the best solution for motorcycle coolants. There are two main types of motorcycle engine coolants: propylene glycol-based coolants and ethylene-based coolants. Some additives can damage motorcycle engine components, so choosing the correct coolant is essential. What Are the Differences Between Motorcycle and Car Engine Coolants?Ĭar and motorcycle engine technologies differ in the materials used, which means your coolant must be specific for your engine type. Modern coolants can prevent an engine from freezing to around -34☌ (-29☏), which is impressive. If you live somewhere temperatures are likely to drop below freezing point, your cooling system must include antifreeze technology. Only some people are as lucky as me to live on a Mediterranean island where temperatures rarely go below freezing. Without the additives, rust will quickly develop within the cooling system, reducing water flow, increasing engine temperature, and ultimately damaging the engine. However, aluminum is more prone to oxidation when in contact with water, and your coolant will contain antioxidant additives, such as silicates and phosphates. This is a much lighter material than traditionally used cast-iron blocks, reducing the engine’s weight significantly.
Manufacturers produce modern motorcycle engines from lightweight aluminum alloys.
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