This is the product of choice for optimal winter operation. Diesel Fuel Supplement(TM) +Cetane Boost(TM) is the product to use for maximum winter operability. This Arctic Antigel formula effectively treats all diesel fuels to prevent fuel from gelling and keeps equipment running trouble-free through the cold winter months. Diesel Fuel Supplement(TM) +Cetane Boost(TM) keeps fuel injectors clean and boosts cetane up to 4 numbers for faster cold starts and a smoother running engine. Treats up to 40 gallons.