2024 Chevy Duramax Diesel Exhaust Fluid Capacity. Welcome to the forum, you'll find lots of info on here related to the def system and dpf system (diesel particulate filter). When choosing the best diesel exhaust fluid (def) for a duramax engine, there are several key factors to consider.
I got this message on my way to work this morning, it popped up with 500 miles def range. Stupid thing is, gm says the fluid temp has to be at 170f.