Economic cold weatherprotection for Diesel Fuel⇒ 1/2 Gallon jug (64oz) treats 500 gallons of Diesel Fuel ADVANTAGES OF STANADYNE WINTER 1000 FORMULA: 1) Fuel Gelling Protection pour point reduced by as muchas 40 degreeF (22 degreeC), depending on base fuel. 2) Reduces ice formation of water in fuel.3) Contains no alcohol. 4) Specially formulated for ultra low sulfur diesel. 5) Can be used with bio diesel up to B20 (20% bio content). Size64 oz (1.9 L)Part Number45697Treatment (1:1000)500 gal (1,900 L) Recommended Treatment: 4 ounces Winter 1000 per 30 gallons of Fuel. > >Authorized Stanadyne Dealer:> 1) Diamond Diesel & Turbocharger Service>>Stanadyne Fuel Additives can be stored for up to 24 months without deteriorating if they are unopened and in a suitable storage environment. Additives will begin to deteriorate when stored longer or improperly.