Freightliner DEF Check Engine Light FIX!!!

If your Freightliner's check engine lights come on while pulling a heavy load, then this will more than likely fix your problem. This problem usually happens for me when I have a heavy load, pulling hills and got DEF fluid from a bigger truck stop. The three check engine light codes: 1. Emissions System Problem Detected Service Engine - SPN 4364 FMI 18 2. Poor Quality DEF Check DEF - SPN 3364 FMI 2 3. Service Engine Emissions System 25% Derate. SPN 5246 **UPDATE** Since making this video, I've tried a couple of additives that seem to work pretty well for cleaning the DPF system. I also researched the DPF system via Freightliner's website and also spoke to a couple of shop managers at various Freightliner locations. They've all pretty much said the same thing, that the DPF filters are supposed to last at least 400,000 miles. So I decided to try the Lucas Deep clean 64oz which you can check out here: https://amzn.to/30cE37Z and HotShots Secrets: https://amzn.to/34Ydgfm Since adding them, I haven't had to Regen once and that was about a month ago. I've hauled a couple of 42,000+ loads up hills and mountains with no problem. So check those out if that's the problem you're having! Best of luck! #DEF #EMISSIONS #FREIGHTLINER #FREIGHTLINEREVOLUTION #DIESEL