DEF stands for diesel exhaust fluid, and it is mandatory for all semi-trucks to use it in the United States. Here's why and what exactly it does.

Diesel exhaust fluid doesn’t last forever. Before restarting an idle heavy-duty diesel truck or using DEF from storage, make ...

So particularly on this orange truck, we did a hidden DEF tank. We took the sleeper bags and the shocks and the pan hard bar and hit everything under the sleeper. And so the back's real clean looking.

In 2014, the EPA revised its guidelines on DEF to include DEF refill intervals. Depending on the type of diesel vehicle you own, you may need to refill your DEF tank every 4,000 miles, at a minimum.

I Accidentally Put DEF in My Diesel Tank, Says GM Owner Who Faced A $15K Disaster The 2023 GMC Sierra owner still ended up on the hook for $2,000 worth of repairs but it could've been far worse ...

4 tips to maximize diesel vehicle power and performance Easily Clean the Entire SCR DEF System Under certain conditions, the water in DEF can evaporate, leaving behind white crystal urea deposits.

Diesel exhaust fluid, also known as DEF, AUS (from aqueous urea solution), or AdBlue, is used to lower the concentration of NOx in diesel exhaust emissions.Usually, the DEF tank filler is placed ...

100-gal. steel diesel tank and 18-gal. polyurethane DEF tank that can be substituted with a tank and pumping system for engine or hydraulic oil Diesel pumped at 15 gpm via an industrial-grade 12V ...

The DEF tank on a vehicle has a heating element that will quickly thaw the liquid and it will continue to be on spec’ after thawing. “Like water, DEF will expand up to 7% when frozen and can damage a ...

DEF stands for diesel exhaust fluid, and it is mandatory for all semi-trucks to use it in the United States. Here's why and what exactly it does.