I JUST CALLED VP RACING FUELS AND THEY SAID THAT THERE FUEL(VP110) WILL NOT VARNISH LIKE REGULAR GAS,SO IM GOING TO RUN IT EVERY ONCE IN A WHILE UNTIL IT RUNS OUT,MAYBE A GALLON OR SO LEFT IN TANK.THENJUST TURN MOTOR OVER ONCE A WEEK TO KEEP PSI OFF OF THE SAME SPRING.