Shoot for about 210 to 220* F I run the first 2 tanks separate one at a time, letting the engine cool with piston a BDC (always) After that taking easy runs, back to back tanks with light load, no more then 1/4 throttle but keeping the temp in that target range. Each pair of tanks gets a little more throttle and a little leanerfor about 1500CC than I put it on the track and take it easy for a few more tanks. By then it will be ready for a fat race tune. At about 2 gallons it will be fully broke in and ready to scream at 260 to 280*