NüDEF Diesel Exhaust Fluid Anti-Crystal Treatment - Treats 25 Gallons - DEF Additive & Stabilizer

If you drive a diesel that requires DEF you need this product now! It will save you hundreds to thousands of $$ because it prevents urea nidus crystals from forming. Once you have urea crystallization in your DEF tank it will always continue to be a problem. NuDEF breaks down the urea crystals that form. This reduces the use of DEF your vehicle is forced to cycle through by the sensors that monitor urea crystal formation. It saves you money on DEF and fuel. And it protects your vehicle.

I've been frustrated with my truck's DEF system for some time now...It seems that DEF fluid is wildly unstable (something they really don't tell you when buying a truck) and as a result, I've experienced my share of DEF system failures. Even when adding DEF fluid as recommended, the volatility of DEF fluid creates a seemingly perfect environment for DEF systems to fail when driving a diesel-powered truck like mine. A friend suggested I try using NuDEF...I was skeptical but figured I had nothing to lose. The dreaded DEF system light had returned again and before making yet another trip to my local dealership to once again be charged a fortune for a repair, I tried it. Wow! After mixing in NuDEF with my DEF fluid and driving for a short period of time, my DEF system light went off and my truck seemed to be a bit...happier! It's now been a few weeks and I have yet to see the DEF system light return and my truck has been performing perfectly. Thanks, NuDEF...You DEFinitely (see what I did there) have a customer for life!

Before, I was getting an error warning saying the DEF quality was insufficient. No restarts after 250 miles. So I purchased a code scanner and reset the code. Error came on again after 100 miles or so.. I tried a local repair shop and they said “dealer only repair” wouldn’t touch it. Here’s the Great News! I purchased this product and have had No problems since. This bottle has saved me from expensive repair bills. Thanks!

You know, I don't know if this stuff works or not, but I can see the DEF crystals around my DEF tank inlet. If this stuff does what the manufacturer and the other reviews say it will, it's worth the cost. I have a 2015 and 2024 Ram 2500, both with the 6.7L diesels, so I started putting this in both of their DEF tanks when I fill up. Time will tell.

geeat

Was getting the P207F code. Sucked the all old DEF out of the truck best I could and refilled with blue def platinum along with a dose of nudef. Took about 50 miles but cleared up the code.

Great Great product! Cleared up my Def system my check engine light is off now!! Ive also noticed I’m getting better milage on my truck! I heard about this stuff through a friend who works w diesel engines, who told me to try it. It turns out my def must have started to crystalize in the lines or not flow properly triggering all sorts of codes.. and this did the trick. Saved me major bucks on new pumps and limes. Btw a bottle goes a long way and truly a must for any def system!

I’m using this for the last 3 months. I assume it is working because well, how do you know? Shipping was fast and price was the best I could find

Fonctionne très bien

Garbage it’ll down your DEF system and we all know that it takes 10 hours at $250 a hour just to figure out why it did coated sensors with something kind of crap seller just sent me in circles so here’s your review I had to give one star to post it but should be -100 stars take a chance I did for 4500$ thanks