Motorcycle Maintenance and Oil Information for 1990 Yamaha XT 350
Servicing the 1990 Yamaha XT 350 starts with the motorcycle’s oil specification rather than a generic product recommendation. Check the model-specific guidance for choosing the lubricant and completing the refill correctly.
What kind of engine oil does a 1990 Yamaha XT 350 need?
The engine-oil grade appearing in this motorcycle's product results is 10W-40. The matching oil selection includes 10W-40 Synthetic Dirt Bike Oil. Compare the product’s full specification with the motorcycle’s service requirements before purchase.

