"I hate to pop anyone's bubble but at a recient track day at Willow (NE of Los Angles) there were several new Corvette's running Red Line 5w-20 (street formula). I don't know any temps or pressures but there were no failed or smoking engines, and no little 'ole ladies driving, either, and it was a hot day. One said that he has been to three track days, changes the oil every 5k miles and every track day, 12k+ miles and still running well."
So, failed engines are common ? Oil changes every other track day, so maybe 200 mile oil changes ? If that's the case then no, it doesn't seem like normal driving with the typical long oil change intervals in Europe.