Motorcycle Maintenance and Oil Information for 1990 Suzuki GN 250
Before changing oil on the 1990 Suzuki GN 250, identify the correct service points and follow the manufacturer’s refill and level-check procedure. A product match helps with shopping, but the full oil specification and application details still matter.
What kind of engine oil does a 1990 Suzuki GN 250 need?
The catalog lists 10W-40 as engine-oil viscosity for this motorcycle. Matching products include 10W-40 Synthetic Metric Motorcycle Oil. Verify the full manufacturer's oil specification, not just viscosity, before using a listed product.

