Check the listing for details. Evans Coolant Prep Fluid (1 Case, 4 Gallon). Condition: New. Listed at 999.00 USD. Evans Prep FluidEvans Prep Fluid is a waterless cooling system flush designed to seek out remaining water after draining the cooling system of an engine. Prep Fluid should be used when block drains are unavailable or cannot be removed. It is not a substitute for thoroughly draining the cooling system and related components. A minimum of 2 gallons of Prep Fluid is recommended for heavy duty diesel engines and 1/2 gallon of Prep Fluid is recommended for all motorcycles converting to PSP, HP or NPG. Prep Fluidis NOT intended to be a stand-alone operating coolant, but as a flush only. +Please read carefully before Purchasing+ All items are new and in factory packaging unless otherwise noted in the description.You can reach us at: (450)449-4442 or by email at the 'Ask a Question' link at the top of the page. We're open Monday thru Friday, 10am-5pm Eastern Standard Time. Please drop us a line if you have any questions before purchasing.PaymentWe accept the following forms of payment.PayPalVisa MasterCardDiscoverAmerican Express