Infomaniac: Try a product called Pro Blend Alcohol lube. 1 can to 55 gallons. It works so well, that I only WD40 the system when the engine sits 3 months or more. I don't even drain the tank between races. I discovered how good it was by total accident. We left a race with the alcohol still in the system, was going to WD40 the system when we got home. We had an engine failure in our tow vehicle in the middle of nowhere. In all the confusion, the alcohol got left in for 6 weeks before we remembered. System was clean, no damage, no corrosion. wink