FHS has a unique promotion. If you will put a link to them on your web page for at least 6 months they will send you four quarts of their oil or fuel, you just pay the shipping. I believe they use 62R oil in their Red Max fuel, and I used their fuel for years with good results. They are not just model fuel manufacturers, they deal with all kinds of racing.

I have a question about synthetic oil, there seems to be two types, one for alcohol fuels and one for gasoline. I thought synthetic would blend with either, or is the synthetic for gasoline blended with some mineral oil?

I think kart racing would be a real blast, you're close to the ground, the machines are light, with good traction, the courses have real tight turns. It sounds like something that would be hard for me to just dabble in.