Whether difficulty starting a motorcycle is related to engine oil is explained as follows: Difficulty starting a motorcycle is related to engine oil. If the viscosity of the oil is too high, it can affect the engine speed, leading to insufficient compression ratio, which makes starting difficult. Functions of Engine Oil: Lubrication and Wear Reduction: There is rapid relative sliding between the piston and cylinder, as well as between the main shaft and bearing shells. To prevent excessive wear of parts, an oil film needs to be established between the two sliding surfaces. A sufficiently thick oil film separates the surfaces of the relatively sliding parts, thereby reducing wear. Additional Information: Avoid going to car washes or having others wash your motorcycle unless absolutely necessary. Car washes may seem to have all the tools and follow standard procedures, but their pursuit of efficiency often leads to poor results. Improper washing can cause faults in components like spark plugs and various wiring. Always let the hot engine cool down before washing. Suddenly rinsing the engine, exhaust pipe, and other parts with cold water—everyone understands the principle of thermal expansion and contraction—can damage the oil seals in various parts, leading to engine oil leakage. Many motorcycle enthusiasts experience slight engine oil leakage due to this reason. It can also cause the chrome plating at the connection between the exhaust pipe and the engine to peel off, oxidize, and rust.
