Rislone 4780 Diesel DEF Treatment | Prevents AdBlue/DEF Fluid Crystallization, 8 oz

I’ve been using Rislone Diesel DEF Treatment for a while now, and it’s an absolute must-have for anyone who wants to keep their diesel engine running smoothly.Pros:Improved Performance: I noticed a significant improvement in my vehicle’s overall performance and efficiency after using this treatment. It keeps the DEF system clean and functioning optimally.Reduces Crystallization: It effectively prevents DEF crystallization, which is a huge plus, especially for long-term maintenance.Easy to Use: The instructions are straightforward, and the bottle is designed for no-mess pouring.Cost-Effective: For the results it delivers, this product is an excellent value. It saves money in the long run by preventing costly repairs.Compatibility: It works perfectly with my diesel truck and meets all DEF system requirements.Cons:None at all! It does exactly what it promises.Whether you're a daily driver or managing a fleet, Rislone Diesel DEF Treatment is a smart choice to ensure optimal engine performance and longevity. Highly recommended! 🚛💪

I used their initial product in DEF tank since I had been geting P20EE codes regularly. I could see crystalization around pour tube, cap, etc. I put it in, then I got the dreaded Poor DEF Quality message and P20EE code again. Then it went away. A few miles later, back again. Then after a few days. maybe 75-80 miles, no more codes.Took a long trip of 650 miles, plus local driving, code and DEF message have never appeared again. Seems to do the trick. I also add in this Rislone maintenance DEF fluid product. Seems to all be working as intended.

Must have for your DEF fill tank. Couldn't believe how fast the white, crystal buildup disappeared. Can only image the gains inside the DEF tank. Will continue to buy and use this product.

Works great for helping clean out your DEF system. Helped clean out the pump.

I don’t know if it helps or not. Truck is still running good

Do not use if you have a 4th or 5th gen RAM diesel. Causes level sensor errors and the dreaded “Service DEF see Dealer” message. Took three warranty replacements of the DEF pump/tank to realize this stuff was causing the failures! Bought the six pack and can’t use and it’s been 6 months so I’m stuck with the rest.

I have a 2017 Volvo VN daycab. DEF was not being used up by truck. Had no light on dash. Filter soot level was increasing and within a couple of days it was almost full.Went the cheapest, fastest way to find a solution. So I changed my DEF tank filter and simply added this solution to DEF tank, really easy. Seemed to have broken up whatever was clogging the system and now my DEF is being used up and back to regular usage.

Excellent, does what it says it does, and I’ve seen how the DEF fluid does white powdery substance even on caps of new DEF fluid in stores! Recommendations for all diesel vehicles!Will buy again!