Motorcycle Maintenance and Oil Information for 2011 Hyosung GT 650 S EFI Comet 647
Servicing the 2011 Hyosung GT 650 S EFI Comet 647 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 oil does a 2011 Hyosung GT 650 S EFI Comet 647 take?
The catalog's engine-oil matches for this motorcycle specify 10W-40, 15W-50 as the listed viscosities. Catalog-matched oil products include 10W-40 Synthetic Metric Motorcycle Oil, 15W-50 Synthetic Metric Motorcycle Oil. Compare the product’s full specification with the motorcycle’s service requirements before purchase.
How much oil does a 2011 Hyosung GT 650 S EFI Comet 647 take?
The listed engine-oil capacity for this vehicle is 3.38 quarts.

