Motorcycle Cooling Systems - Doctor Moto
Be Cool, Dude
Liquid cooling of motorcycles allows the engines to produce far more power for a given size, compared to engines with air cooling. However, it also adds a bit of complexity and maintenance requirements that are often overlooked until damage is done.
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The cooling system should be flushed and new coolant installed every two to five years, depending on type of coolant (long life or standard) and the service conditions. Hoses crack and deteriorate from the inside out and should also be inspected and replaced as needed, every five to ten years, depending on condition.