Motorcycle Maintenance and Oil Information for 2009 Hyosung GT 650 P EFI Comet 647
For the 2009 Hyosung GT 650 P EFI Comet 647, 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 kind of oil does a 2009 Hyosung GT 650 P EFI Comet 647 take?
According to the matched catalog records, the engine-oil grades are 10W-40, 15W-50. Catalog-matched oil products include 10W-40 Synthetic Metric Motorcycle Oil, 15W-50 Synthetic Metric Motorcycle Oil. Check the owner’s manual for any additional oil requirements beyond the listed viscosity.
What is the oil capacity of a 2009 Hyosung GT 650 P EFI Comet 647?
The listed engine-oil capacity for this vehicle is 3.38 quarts.

