If you have a Can exhaust 93 pump gas is ok. If you have a pipe you better keep it pretty rich on 93 octane. A pipe likes Sunoco purple or VP C-12, VP MS98L is ok too. The problem with race gas is it goes south pretty quick so, you have to get it in 5 gal cans and decant to one gal cans to keep the air gap down. If you’re getting it from a large track tank, good luck.
Blendzall 460P Green Label Castor is still the best oil you can use in any kart engine but it’s more work to use it. Red Line Two Stroke Racing Oil is one of the top synthetics and it’s what I recommend.
FAA certified jet engine and aircraft technician,
Nicholson Speedway class champion 2001,
Yamaha KT100 Service Center,
41 years karting experience