Motorcycle Maintenance and Oil Information for 1991 Suzuki LS 650
Planning maintenance for the 1991 Suzuki LS 650 begins with matching the lubricant to the exact engine application. Use the product listing as a reference and the manufacturer’s instructions for the correct oil-change procedure.
What type of engine oil does a 1991 Suzuki LS 650 need?
The listed engine-oil viscosity for this application is 10W-40. The matching oil selection includes 10W-40 Synthetic Metric Motorcycle Oil. Viscosity alone does not establish full compatibility; verify the manufacturer’s oil standard.

