If you're in daytona, collect a bit of used fryer oil, settle and filter it, and use it as a lube additive as well. Or filtered waste motor oil.
You can probably run in excess of 50% WVO year round in Daytona. Saves a LOT of money, once you buy the barrels and filter and pump. Plus WVO will REALLY clena your tank.
You should, of course, always carry a spare fuel filter in the car.