Gumout® PRO DEF
Diesel Exhaust Fluid
Gumout® PRO DEF diesel exhaust fluid is the easiest and fastest filling DEF product available. The unique spout and hose system combined with our fast-fill box package eliminates the frustration of filling your DEF tank.
No lifting or pouring needed. Simply set the 2.5 gallon box on your vehicle, insert the hose in your DEF tank and open the spout for a quick and easy DEF fill.
It’s easy and reliable. PRO DEF meets all OEM standards and is backed by a quality brand you can trust.
Diesel Exhaust Fluid (DEF) is an emissions reducing treatment for diesel engines. DEF meets AUS32 and ISO 22241 standards for diesel engines equipped with the new Selective Catalytic Reduction system. DEF is NOT a fuel additive.
EASY TO USE:
Note: Use only per label directions.
STORAGE: To store left-over fluid, clean the tube to remove any soil then return it to the box to avoid system contamination during future use.
* available at select retailers.
See How Easy PRO DEF is to Use.