🛠️ Keep your diesel running smooth—no crystals, no costly repairs, just pure power.
Rislone 4780 Diesel DEF Treatment is an 8 oz anti-crystallization additive designed to prevent white crystalline deposits in diesel exhaust fluid systems. It protects critical SCR components, improves engine efficiency, and is safe for all UREA AdBlue DEF fluids without affecting vehicle warranties. Perfect for diesel vehicles frequently operating under low load or stop-and-go conditions, it should be added with every DEF refill to maintain system health and avoid expensive repairs.
| Manufacturer | Bar's Products |
| Brand | Rislone |
| Model | DEF Treatment |
| Item Weight | 10 ounces |
| Package Dimensions | 6.26 x 3.58 x 1.57 inches |
| Item model number | 4780 |
| Manufacturer Part Number | 4780 |
J**G
DEF system maintenance
Does it work? I don't know. I believe the product is good. I don't have DEF system issues on a LZO duramax or a 21' Cummins diesel. Maybe this product is why I never have an issue. This should help prevent crystals building up from DEF. Preventative maintenance is important and this is it's intended use. I will continue to use it.
S**E
Works well.
Had been recommended to use this product in our motorhome. Seems to work well. Easy to use and great value. Will buy again.
T**L
Better to have and not know you need it than to need it and wish you had it.
I give this product a 5 star rating because I have been using it and I havent needed to take the DEF injector off for cleaning since using it. The reason I needed to discover this product ASAP last summer is because while towing my RV and driving through Ohio on a sunday, my light came on in my car telling me to find dealership to check the def injector. Being new to diesels I had no idea what that meant and we had about 400 miles to go that day to get to our pitstop for the night. So as my truck is counting down the miles as to when it will go into limp mode, I had puled into a truck stop and went under the truck and located the thing that the internet told me was the def injector and pulled it out with a socket wrench all the meanwhile just getting burned like crazy because I did not have time to wait to get this truck back on the road. I poked a hole in my water bottle to acually get all the dried def fluid off of the injector and then I screwed it back into place and started driving and the light didnt go off in the truck and it continued to count down the miles. While I was successfully able to reset the code after another 50 miles or so, this whole ordeal ended up costing my trip about 3 hours and if we needed a place for the night then it woudve costed much more. Not only that but if I had to go to a dealership and get it serviced the whole vacation would have been ruined as our days were fully accounted for. Needless to say I wish I had this product sooner even though I am not 100% certain that it will always prevent this stuff from clogging.
J**E
Great product
Works great for helping clean out your DEF system. Helped clean out the pump.
W**N
Diesel Def additive
In my diesel truck this is a Def additive to reduce crystals in def filter .
P**O
Used after the initial DEF product, this one seems to have things working well
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.
J**N
Beware! Don’t use
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.
B**C
Excellent Diesel DEF Treatment – Works Like a Charm!
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! 🚛💪
Trustpilot
2 days ago
1 month ago
