depends on the climate of your country/state. look up the owners manual, or get a haynes or clymer maintenance book also available online
SAE 10w30 Full Synthetic, any major brand.
In cold months use 10W30. In hot weather use 20/50.
3.7
RECENTLY CHANGED MY 1981 750 VIRAGO. TOOK 3 QUARTS OF SYNTHETIC MOTORCYCLE OIL
Hi: The oil capacite for the 750 Virago is 3.3 quarts with filter or 3.2 quarts with out Frank;
750 Ml or 0,75 Liters
The oil capacity for a 1989 Yamaha Virago XV-750 is 13.4 ounces. This motorcycle gets 45.2 miles per gallon, and its top speed is 108.7 mph.
10-40 synthetic Suzuki oil
Yamaha Viraho 750 holds cca 2 dcl of gear oil. I think it will be about the same.
The 1996 Yamaha 1100 has a low oil warning light, in the instrument panel. The motor oil dipstick has a low oil mark.
oil level light
650ml