[dataway]

Steve, when I was running an air cooled race bike, with some stupid high spring pressures and about 10,000 rpm that freakin Redline was the ONLY oil I ever found that would not come out dark and burnt smelling after races at tracks like Mosport, and would keep the valve train alive for about two seasons. Mobil 1 as much as I like it would not hold up, Royal Purple a little better, Redline seem to do the trick. I'd guess oil temps even with a cooler was in the 300+ degree range. Amazing stuff and pricey too.