Motorcycle Maintenance and Oil Information for 2013 Hyosung GT 650 EFI Comet 647
Planning maintenance for the 2013 Hyosung GT 650 EFI Comet 647 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 kind of engine oil does a 2013 Hyosung GT 650 EFI Comet 647 need?
For this motorcycle, the catalog shows 10W-40, 15W-50 among its engine-oil grades. The matching product listing includes 10W-40 Synthetic Metric Motorcycle Oil, 15W-50 Synthetic Metric Motorcycle Oil. Confirm the manufacturer’s complete oil specification before using a listed product.
How much oil does a 2013 Hyosung GT 650 EFI Comet 647 need?
The listed engine-oil capacity for this vehicle is 3.38 quarts.

