oil, like any engine depends on the condition, what you are doing with it, prefrance and budget. not in that order and not always all of them.

there is tons of 22R info on the web. use google, i dont think there are any 22R experts on TR. havent seen much talk about it here.

As for local 22R people i would have to say Raymond at fisherbuggies is the man to talk to. for a wile he was racing a turbo 22R rail dragster, i believe it was running 7's or 6's. its on display at fishers.