Changing oil at 3k or less is a big factor in longevity of the motor with the exception of these companies that pitch the longer oil change intervals which I dont necessarily agree with. Id rather be safe and do the 20 min change...
****472 RWHP/461 TORQUE ON 110 RACE GAS @21 PSI ****438 RWHP ON 93 OCTANE PUMP GAS/STOCK MOTOR**** ****429 FT LBS/TQ*******************************