An old one but a good one….. All models T500 from 1968 to 1972 (i.e. Cobra to T500J inclusive) carried 1200cc of transmission oil. This amount of oil was inadequate to prevent wear on 4th and 5th gear (the case
A personal opinion Basically, on the Suzuki oil injection system the outside lines lube the outer mains, the Middle oil lines oil the piston skirt & oil from both of them mixes with the gas. The inner mains are oiled