Motorcycle Maintenance and Oil Information for 1998 Yamaha TW 125
If you are planning an oil change on the 1998 Yamaha TW 125, start by checking the manufacturer’s full lubricant specification and the correct refill procedure. The matched oil information below can help you narrow the choices without substituting for the service manual.
What kind of engine oil does a 1998 Yamaha TW 125 need?
For the engine-oil application, the database lists 10W-40. Catalog-matched oil products include 10W-40 Synthetic Dirt Bike Oil. Viscosity alone does not establish full compatibility; verify the manufacturer’s oil standard.

