Motorcycle Maintenance and Oil Information for 1991 Yamaha XT 350
For the 1991 Yamaha XT 350, the product catalog provides a starting point when choosing a lubricant. Before servicing the engine, verify the complete manufacturer specification and the procedure used to check the final oil level.
What type of oil does a 1991 Yamaha XT 350 take?
According to the matched catalog records, the engine-oil grade is 10W-40. The matching product listing includes 10W-40 Synthetic Dirt Bike Oil. Check the owner’s manual for any additional oil requirements beyond the listed viscosity.

