Started using Trinity Traction or tire tweak as they call it . Followed the directions and this stuff works great . Six of the racers use it here at my track and we all pick up anywhere from 11/2 to 2 tenths in our lap times . It leaves no mess on the tires and it softens the tire for maxium traction plus keeps the tire in good condition when not in use. Place on tires day before the race wipe off before you use the car and you are set for a day of racing.works great on old tires to bring them back where you can use them again...
Tony