What oil does a Harley 750 use?
2 Answers
Harley 750 uses AMSOIL 20W-50 oil. Introduction to engine oil: Engine oil is the lubricant used by the engine, composed of base oil and additives. The density of engine oil is approximately 0.91×10 cubic meters per kilogram to lubricate and reduce friction, assist in cooling, seal against leaks, prevent rust and corrosion, and provide shock absorption for the engine. Introduction to base oil: Base oil is the main component of lubricating oil, determining its basic properties. Additives can compensate for and improve the shortcomings of the base oil, imparting certain new properties, making them an important part of lubricating oil.
I've been riding a Harley 750 for almost ten years and have extensive research on engine oil. This type of bike engine emphasizes high performance, so it's essential to use motorcycle-specific synthetic oil, with recommended viscosities of 20W-50 or 15W-40. Full synthetic oil is the best, such as brands like Motul or Castrol, which offer high-temperature resistance to protect engine components, especially during long-distance rides to prevent overheating. Never opt for cheap automotive oil, as motorcycle oil contains special additives to protect the clutch, while automotive oil can cause slippage or excessive wear. I typically change the oil every 5,000 kilometers, using slightly thicker 20W-50 in summer to ensure proper lubrication and switching to 15W-40 in winter for smoother starts. Regularly check the dipstick, and if the oil appears black or has an unusual odor, change it immediately. Choosing the right oil reduces engine wear and extends its lifespan—it's absolutely worth spending a bit more.