Stanadyne Performance Formula Warm Weather Blend - One Case of Pints Part# 43570 Each Bottle Treats 60 Gallons of Diesel Fuel. Case includes 12 Bottles The only Additive recommended by most O.E.M.s Product is Manufactured in the U.S.A. The same benefits as Stanadyne Performance Formula except the Cold Weather Protection. If you don't need cold weather protection why pay for it? Product must be shipped Ground