Diesel Fuel Anti-Gel 64 oz When temperatures drop paraffin (wax) in ULSD fuel will gel stopping fuel from flowing through the engine and water in the fuel can freeze on the facings of fuel-filters blocking fuel flow.•.
Diesel Fuel Anti-Gel 64 oz When temperatures drop paraffin (wax) in ULSD fuel will gel stopping fuel from flowing through the engine and water in the fuel can freeze on the facings of fuel-filters blocking fuel flow. Diesel Fuel Supplement +Cetane Boost is intended for use only during cold winter months when temperatures drop below +30F.