Motorcycle Maintenance and Oil Information for 2008 Hyosung GT 650 S Comet 647
An engine-oil service on the 2008 Hyosung GT 650 S Comet 647 calls for more than a product match. Identify the correct oil requirement for this particular motorcycle, then follow the prescribed drain, refill, and final level-check steps.
What kind of oil does a 2008 Hyosung GT 650 S Comet 647 take?
The catalog's engine-oil matches for this motorcycle specify 10W-40, 15W-50 as the listed viscosities. The matching product listing includes 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.
How much oil does a 2008 Hyosung GT 650 S Comet 647 need?
The listed engine-oil capacity for this vehicle is 3.38 quarts.

