Rislone DEF Treatment for Diesel Vehicles, 8 fl oz Bottle

Compared prices to a auto parts store and Walmart is cheaper.

[This review was collected as part of a promotion.] After having a CEL come on and using the Rislone 4784 DEF Medic, I started using this with every 2.5 gallon DEF Fill-up and the system is working like new without the hiccups and without the need for expensive dealer maintenance.

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. Preventative maintenance is important and this is it's intended use. With this product you won't be disappointed 5*

everything is good

[This review was collected as part of a promotion.] I purchased this and the cleaner and I am very happy I did! I use it in our Super Duty F350. Don't wait til its too late.

I can't recommend it because there has been no significant difference . I am very detailed about truck records and after using 3 or 4 bottles worth I don't see a change

Not sure what the issue is but I added this to my 2021 gmc sierra 1500 duramax and started having problems with my def gauge, I have hear the same from others after I added it they had the same issue. Long story short my sensor stopped working and I had to get the def tank replaced after I got a check engine light. I truly believe it was from this stuff.

While using this product I noticed that my def was burning up pretty fast. I emptied my tank and didn't add this and my def usage went back to normal!

Didn't receive item

Put it in my truck and it froze before I could put in