1992 suzuki gxr 750 with the replacement of the filter will hold around 3.4 to 3.6 quarts.
3.1 quarts
3 or fill to the fill line
3.5 quarts
Rectifier is probably bad. Battery not getting sufficient charge.
5.8q-6q
3.2
2.2quarts
2.5 quarts of 10W40 without a filter change, 3 quarts with filter change, according to my 2003 Suzuki VS800 factory manual.
Hold the bike level and check the coolant bottle behind the lower left fairing.
Mine too 4 quarts or the whole med Jug of oil.
4 quarts
1700ml with filter change or 1500ml without the filter change