Motorcycle Maintenance and Oil Information for 1999 Cagiva River 600
Servicing the 1999 Cagiva River 600 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 1999 Cagiva River 600 need?
The listed engine-oil viscosity for this application is 10W-40. The matching oil selection includes 10W-40 Synthetic Metric Motorcycle Oil. Check the owner’s manual for any additional oil requirements beyond the listed viscosity.

