There is a recreation vehicle dealership near my home that sells 112 octane racing fuel. I am considering getting some for my sled and was looking for some comments. I would definatly like to squeeze all of the power out of my sled as I can but not at the cost of destroying the engine. I have been told that running it would be fine, mix it half and half with premium fuel, and that it would be too hard on the engine and not to use it at all. Any one else out there use high octane fuel? I would appricate any insight on this topic.