RISLONE Crystal Clean™ Diesel DEF & SCR Emissions System Cleaner

SCR CRYSTAL CLEAN™ Diesel DEF SCR Emissions System Cleaner is a propriety blend of DEF (Diesel Exhaust Fluid) compatible cleaning agents and surfactant detergents specifically designed to be safe to use and work on SCR (Selective Catalyst Reduction) systems. SCR Crystal Clean gives a cleaning effect on the entire SCR system by working to dissolve and solidify the white crystal deposits that form in the tank, pump, lines, injector and mixer. These deposits can interfere with the normal operation of the system and engine, to the point that the vehicle will become no longer drivable. This process restores their function and with regular use maintains efficiency.

• UREA Crystallization Cleaner
• Clears P218F and Other OBD Codes
• Restores DEF and SCR System
• Cleans DEF Injector, Sender and Pump
• Avoid Costly AdBlue System Repairs
• Improves Emission Component Life
• Restores SCR Selective Catalyst Reduction Performance
• Cleans Crystal Deposits
• Works with all UREA AdBlue Diesel Exhaust Fluids
• Restores Optimal Injector Spray Pattern

Dosage & Directions

Dosage
Car or Small SUV - 11 to 18L tank capacity use approximately ½ bottle.
Light Truck or Mid-Size to Large SUV - 19 to 35L tank capacity install full bottle into DEF tank.

Directions
DEF Crystal Clean is specifically designed to only be installed in the Diesel Exhaust Fluid / AdBlue tank which usually has a blue cap. Do not add to the diesel fuel tank.

Frequently Asked Questions

What does Rislone Crystal Clean™ Diesel DEF & SCR Emissions System Cleaner do?
DEF CRYSTAL CLEAN™ Diesel DEF & SCR Emissions System Cleaner gives a cleaning effect on the entire SCR system by working to dissolve the white crystal deposits that form in the tank, pump, heater, sender, lines, injector, decomposition tube/reactor and mixer.

How often should this be used?
Regular use every 8046km not only keeps the system clean but works to prevent the white crystallization issues from returning.

Can a clogged supplemental catalyst reduction SCR system be cleaned?
Yes, many times it can, especially if you catch it early and it is not completely blocked.

What are the white deposits and where do they come from?
The white hard crystal deposits found in DEF fluid, or the SCR system are typically UREA that has crystallized. These crystals can block injectors and other parts of the SCR system.

Why does my engine need an SCR system?
The SCR system allows diesel engines to meet stricter emission regulations, while also maintaining performance and efficiency. Overall, the SCR system is an effective way to reduce NOx emissions from diesel engines, and it's a widely used technology in various industries such as automotive, marine, and power generation.

What is DEF?
Liquid urea and deionized water (32.5% urea and 67.5% water), also known as Diesel Exhaust Fluid (DEF) or AdBlue, which is injected into the hot exhaust stream of the diesel engine and is then pushed out the tailpipe.

How much do I use?
One full bottle is used to treat light truck or mid-size to large SUV diesel vehicles with 18 to 34L DEF tank.
Car or Small SUV – 11 to 18L DEF tank capacity use approximately ½ bottle.
Medium & Heavy Duty Diesel Trucks - 37 to 75L DEF tank capacity use 2 bottles.

What is AdBlue?
AdBlue is a brand name used by license for many brands of diesel exhaust fluid around the world. DEF and AdBlue are one in the same.

What causes DEF fluid to go bad?
Evaporation & Leakage: If the DEF system has any air leaks, the DEF can escape and the water will evaporate, leaving behind crystallized urea.
Age: Old DEF fluid in containers or in the system, especially if it has been exposed to sunlight.
Overfilling: Overfilling the DEF tank can also lead to spills, which can then crystallize.
Improper Handling: If DEF is not handled or stored properly, contamination can occur, which can also lead to crystallization. DEF should always be stored in a cool, dry, well-ventilated place away from direct sunlight.
Poor Quality DEF: If the DEF used is not of good quality (meaning, it doesn't maintain the required ratio of deionized water to urea), it can lead to deposits.

Will this product harm the DEF, SCR or DPF system?
No, this will not harm your engine or any emissions components. Specifically designed and safe to use on vehicles which have DOC catalytic converters, DPF particulate filters, SCR selective catalytic reduction devices, ASC ammonia slip catalyst or DEF/AdBlue systems. Will not void manufacturer’s new vehicle warranty.

What are the most common diesel SCR check engine light CEL codes?
The most common codes for the SCR / DEF system are P20EE, P20EF, P20E8, P204F, P207F and P218F. These codes mean that the efficiency of the SCR is below its functional threshold, that NOx emissions are being exceeded, or there is an issue with DEF flow in the system.

What if I accidentally added DEF fluid or DEF Crystal Clean to my diesel fuel?
Accidently adding DEF fluid or DEF Crystal Clean to diesel fuel can cause serious engine damage. If the engine has not been started, the diesel fuel tank should be drained and cleaned. If the vehicle has been run, not only will the tank need to be cleaned, but the entire fuel system and then check the engine for damage.

Can I use DEF Crystal Clean if it has frozen?
Just like DEF fluid, DEF Crystal Clean can freeze. If it has frozen and the bottle is not broken, let it thaw out, shake well, and then use as directed.

Technical Information

SAFETY DATA SHEET
CODE: 44784
SIZE: 350ML