2025 Chevy Duramax Diesel Exhaust Fluid. Stupid thing is, gm says the fluid temp has to be at 170f. Checking the def fluid level is an essential.
If you’re driving a 2025 duramax and want to ensure your diesel exhaust fluid (def) is at the right level, you’re in the right place! Stupid thing is, gm says the fluid temp has to be at 170f.