Motorcycle Maintenance and Oil Information for 1990 Yamaha YZ 250
If you are preparing to service the 1990 Yamaha YZ 250, first identify the oil system described in the service manual. The catalog includes two-stroke lubrication products, but that listing does not determine the method of oil delivery or the requirements of a separate gearbox.
What type of oil does a 1990 Yamaha YZ 250 take?
Matching oil products in the vehicle catalog include DOMINATOR® Synthetic 2-Stroke Racing Oil, INTERCEPTOR® Synthetic 2-Stroke Oil. The record does not verify a viscosity, premix ratio, or oil-injection method; use model-specific service instructions for those details.

