Diesel exhaust fluid is one of the key elements of the Selective Catalytic Reduction (SCR) process used by most medium and heavy-duty engine builders to meet EPA 2010 regulations. BlueDEF is a non-toxic solution of 67.5 percent purified water and 32.5 percent ultra pure automotive grade urea. BlueDEF is not a fuel or fuel additive. Instead, when injected into the exhaust stream and passed over a catalyst, BlueDEF helps convert NOx into nitrogen gas and water vapor, two harmless and natural components of the air. BlueDEF is stable, colorless and odorless, and meets ISO Standards 22241 for purity and composition and is an American Petroleum Institute (API) certified diesel exhaust fluid. These are the highest quality and safety standards in place to ensure optimum SCR performance. Making sure you do not run out of BlueDEF in a SCR equipped truck is simple, watch the Diesel Exhaust Fluid (DEF) gauge, which is part of the diesel fuel gauge, for when it is time to refill. DEF is stored in a dedicated tank next to the fuel tank on the driver’s side. The tanks range in size from 6 to 23 gallons depending on the truck’s application. The DEF tank fill opening is designed to accommodate a DEF fill nozzle to ensure only DEF is put into the tank. A diesel fuel nozzle will not fit into the DEF tank opening.
- One gallon of BlueDEF is used approximately every 300 miles
- A truck with a 20 gallon DEF tank can go up to 6000 miles between fill-ups
- When used in an SCR system BlueDEF will reduce the levels of NOx emissions of those engines
- Non-flammable



















Amandas honey pots –
We use this for our work truck, and my drivers love using this product because we always have enough and it is easy to use.
Warren Johnson –
Arrived quickly and was just as advertised.
paiger –
Love having in my shop for when ever i need def, its there.
mike dahnke –
Bill is always better
T3GunWorks –
If you have a diesel, buy your DEF in bulk. Will save you some money. Good Quality DEF.
lucas plarr –
took longer than expected but i did receive my item
JANET P. –
Got this DEF for our small fleet of trucks. Can’t always find it at a decent price.This large tote makes it easy for us to keep on hand and ready to use.
Len Z. –
I got it complete with a hole at the bottom of the plastic drum.Didn’t have an option to have it swapped for a different one without a hole.