Why does my diesel need DEF?

Posted on 2/19/2019



DEF is urea that helps clean the exhaust before it's released from your vehicle. DEF stands for diesel exhaust fluid just in case you were wondering. If your vehicle has the system on it, then it's required for the engine to run correctly. There is a difference between the three systems and the type of fluid so if you're refilling it on your own just make sure you have the right stuff for it. 


2012 was the last year that it wasn't federally mandated that you had to have a DEF system on your diesel vehicle. Ford and Chevy both went to the DEF systems before it was mandated and Dodge switched in 2013. 


If you have questions give us a call at 541-791-2886 and we would be happy to help out. 


Happy Adventures,


Heather

By jhautoinc April 3, 2026
This can cause bigger issues with your engine
By jhautoinc March 31, 2026
This could be causing your run-ability issues
By jhautoinc March 27, 2026
They should be replaced on time.
By jhautoinc March 24, 2026
A brake fluid leak is very bad.
By jhautoinc March 20, 2026
This is a repair you don't want to put off
By jhautoinc March 17, 2026
Stopping is as important if not more important than starting
By jhautoinc March 13, 2026
Coolant is a vital fluid
By jhautoinc March 10, 2026
Catastrophic damage is not normal
By jhautoinc March 4, 2026
A water pump is a vital component
By jhautoinc February 28, 2026
A little maintenance can prevent a big problem