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 May 22, 2026
It's important to keep you safe.
By jhautoinc May 19, 2026
This most likely a catastrophic failure
By jhautoinc May 12, 2026
This debris makes it hard for your radiator to work
By jhautoinc April 28, 2026
An oil leak can be dangerous
By jhautoinc April 24, 2026
Gear oil is important lubrication
By jhautoinc April 22, 2026
This is repair that should not be put off.
By jhautoinc April 14, 2026
It's a mechanical failure
By jhautoinc April 11, 2026
Alternator should not make noise
By jhautoinc April 7, 2026
A plugged exhaust is an issue for your engine.
By jhautoinc April 3, 2026
This can cause bigger issues with your engine