Last year at the New Hampshire Cistic Fibrosis Dual Sport ride, some of us got bogged down in some nasty stuff, and our WR's, and DRZ,s overheated, and lost fluid. My DRZ buddy talked to the Suzuki support guy's, and they told him to go to a 1.2lb radiator cap instead of the standard 1.1lb,(same as the stock 99 WR's), and get somw "Wet Water" additive. Bought some Wet Water, and we are looking for 1.2lb rad caps. Just want to know if anyone has done this, or might want to. Ron S.