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House of Boost built the custom enclosures for Matt's Boost Cooler reservoirs. The larger 2.5-gallon tank at right holds the 50/50 water-methanol mix for the engine; the small tank at left holds water for the brake-cooling system. Matt says the water-methanol injection consumption by the engine is highly variable, depending on the engine tune and how hard you run it. We used just over a gallon in 10 laps (about 25 miles of hard-core hammering). Straight water works-water-methanol works better. Snow Performance sells its own Boost Juice methanol, but it can be bought at racing fuel distributors or as WalMart brand windshield washer fluid, which is 30-percent methanol. Heet, which is gasoline antifreeze, is pure methanol and makes a good spike for the washer fluid. Either way, methanol is way, way cheaper than race gas. We ran High Plains with 91 octane in the tank.