Motorcycle Maintenance and Oil Information for 1990 Yamaha XT 500
An oil purchase for the 1990 Yamaha XT 500 should be guided by the exact motorcycle application. Confirm the manufacturer’s lubricant requirements before relying on a catalog match, and check the oil level after the service.
What type of engine oil does a 1990 Yamaha XT 500 need?
For the engine-oil application, the database lists 10W-40. Products shown for this application include 10W-40 Synthetic Dirt Bike Oil. Confirm the manufacturer’s complete oil specification before using a listed product.

