Lubrication
Engine oil & filter
Lubricates, cools and cleans the engine — and, on a bike, the gearbox and clutch too.
How it works
Oil circulates under pressure to lubricate moving parts, carry away heat, and capture impurities (trapped by the oil filter). On most motorcycles, the same oil also lubricates the wet clutch: it needs to be JASO MA2 certified. Worn or unsuitable oil makes gear changes stiff and causes the clutch to slip.
Maintenance tips
- Change the oil at manufacturer intervals, with a fresh filter every time.
- Use a motorcycle-specific JASO MA2 oil (not an "economy" automotive oil).
- Check the level regularly.
Related symptoms
⚠️ The information on this page is provided for educational purposes to help you understand the role and operation of the part. It replaces neither a physical inspection nor the judgment of a certified mechanic. Before any work on a safety-critical component (braking, steering, transmission, suspension), have the part's condition confirmed by a professional.