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🚛 Keep your diesel running clean, mean, and code-free!
Rislone DEF Crystal Clean™ is a specialized 11.8 oz liquid additive designed to dissolve harmful crystallization deposits in diesel SCR emissions systems. Compatible with all major DEF fluids and safe for vehicles with DOC, DPF, and SCR devices, it prevents engine limp mode and maintains fuel efficiency when used every 5,000 miles. Ideal for diesel vehicles with frequent stops or low-load driving, it protects your engine without voiding warranties.
| ASIN | B0CRSY78LR |
| Brand | Rislone |
| Brand Name | Rislone |
| Contains Liquid Contents? | Yes |
| Customer Reviews | 4.5 out of 5 stars 594 Reviews |
| Included Components | (1) DEF and SCR Treatment |
| Item Form | Liquid |
| Item Type Name | Diesel DEF & SCR Emissions System Cleaner |
| Item Volume | 11.8 Fluid Ounces |
| Item form | Liquid |
| Item volume | 11.8 Fluid Ounces |
| Manufacturer | Bar's Products |
| Material Features | Scented |
| Material features | Scented |
| Model Number | 4784 |
| Number of Items | 1 |
| Part Number | 4784 |
| Scent | Unique |
| Size | Pack of 1 |
| Special Features | Automotive |
| Specific Uses For Product | Automotive DEF additive |
| Specific uses for product | Automotive DEF additive |
| Surface Recommendation | Automotive |
| UPC | 078615047840 |
| Unit Count | 1 Fluid Ounces |
T**S
ONE PRODUCT HELPED FIX DURAMAX CODES
It helped with other procedures to clear codes in Duramam
M**S
Works on 2017 6.6 Duramax DEF system to keep crystallization down
2017 6.6 Duramax kept throwing a DEF code. I think it was due to crystallization on my sensors. I poured this golden nugget into my system and the codes went away and have not returned. I buy Walmart DEF for reference. I’m about to pour my 2nd round in since it’s been about 6k miles since my last dose. Highly recommend.
A**R
Easy to use.
Fast delivery. If it works as shown should prolong my diesel truck motor.
A**R
Works! Cleared code P2002
My check engine light was on and I had a P2002 code. I added Rislone 4784 Crystal Clean Diesel DEF & SCR Emission System Cleaner and some fresh DEF. After driving about 200 miles, the code cleared itself. I think the issue was that my DEF had crystalized and needed to dissolved with this cleaner. Rislone also makes a DEF additive to prevent crystallization. (Rislone Diesel DEF Treatment) I'll be adding that to my DEF tank from now on.
A**R
It works excellent.
As always, I'm skeptical when it comes to product performance—but this one? Amazing. I never owned a diesel until I bought my '21 GMC HD2500 Duramax. I love it, but man, diesel engines demand preventive maintenance. You can't wait for things to break—you’ve got to stay ahead of it with products that help reduce or even prevent issues. This particular product is excellent. Since the day I bought my truck, I’ve had nonstop problems with the DEF tank sensors sticking. Sometimes it would show full when I knew it wasn’t, and other times it claimed to be half empty right after a fresh fill-up. Totally unreliable. And what did the dealer say? “It’s inadvertent.” That word should be banned—it’s just an excuse to ignore a real problem. Let me tell you—this product works. Period. And it worked fast, too. Absolutely amazing.
Trustpilot
1 week ago
3 days ago