Rislone DEF Crystal Clean Diesel DEF & SCR Emissions System Cleaner Diesel Exhaust Fluid, 11.8 Fl oz

I bought this about three weeks ago and I’m thankful that I did. I had a maintenance light come on and after googling it, I learned that you are suppose to use a de crystallizer in your Diesel exhaust fluid. After purchasing this product and running a couple days, my Maintenance light went off and code cleared.

I purchased my new Chevy suburban 2025 back in August 2025. With a Duramax diesel engine. Way back in 1982 I had a diesel Chevy pickup than I really liked But the family grew and I had to shift to a suburban. So much information now days about caring for the Duramax . To get all the possible life out of it U can. Used to just worry about ND cold weather and mixing number one and two diesel properly so U didn't gel up. So I am adding supplements to fuel and reading and learning about the DEF system . I run peak premium DEF. Now I read that the DEF system may crystallize and a person should add an additive a couple times a year or every 10,000 miles. I have 20,000 miles on the sub and I did dump something in DEF tank back at 10,000 miles. So thinking I will add this supplement shortly to the DEF tank. Sounds like about half the bottle every 10,000 mikes or at least once a year and I guess hope it helps and U don't have any problems done The road. Wish I could report back! But system doesn't allow that .

[This review was collected as part of a promotion.] I bought this product and it helped me a lot with cleaning the lines of the tank.

[This review was collected as part of a promotion.] I use this everywhere time I refill my def reservoir.

This stuff works great in your DEF tank. Thank you for making it

A great product that works!

I had a code on my 2017 Ram 2500 indicating that the %232 NOX sensor was out of range. I used this product and after driving the pickup several hundred miles the code disappeared. So far so good, no further problems.

[This review was collected as part of a promotion.] Bought this because I was getting a code on my ram truck was actually looking for a different product but the store didn't have the one I was looking for so saw this one and googled it and seemed like it should work put it in before I went on a long trip and it seems to have helped with the DEF system hopefully it will help it last longer

[This review was collected as part of a promotion.] Running an LH7 1.6 Equinox and had a CEL (Check Engine Light) come on with a Low Reagent Consumption Code come up. Poured 1/2 bottle of this into my 4 gallon DEF Tank and the code was gone, system cleared and never looked back. That was over 10,000 miles ago.

Bad reviews to Walmart. I’m really thinking to cancel purchases from them to cancel my membership!!!!