I think
30 percent is overkill. 20 percent is perfect for racing. I run 20 percent in the summer, and 25 in the winter, not exclusively but it just seems to happen that way. More oil is better for the engine, and some fuels use as low as 9 percent oil, not enough, no matter how great the oil is. They say proprietary lube package is lightyears ahead giving us the ability to use les oil and make you win races, whatever, the manufacturer Novarossi recomends 12 percent oil, who knows better than they do? the 20 percent byrons gen 2 fuel is just about perfect....