Rislone Diesel DEF Treatment 6-Pack 8 oz — anti-crystallization additive to protect SCR systems and maintain DEF dosing

Rislone Diesel DEF Treatment is an anti-crystallization additive you pour into the DEF/AdBlue tank at each refill to help prevent white crystalline deposits in SCR systems.

Modern diesel exhaust aftertreatment systems rely on a clean Diesel Exhaust Fluid (DEF) supply to function efficiently. Over time, urea-based DEF can form hard, white crystalline deposits inside the Selective Catalytic Reduction (SCR) plumbing, tanks, pumps and injectors. These deposits can be costly to repair and may reduce fuel efficiency or impair system operation. Rislone’s DEF Treatment is formulated to be added directly to DEF/AdBlue fluid each time you top off the tank, helping minimize deposit formation and preserving component function without altering the fluid’s chemistry or voiding manufacturer warranties.

How does adding this treatment help protect my SCR components?

The additive interferes with the formation and adhesion of urea crystals that can accumulate in tanks, lines and dosing equipment. By reducing the tendency for deposits to form, it helps maintain consistent DEF flow and dosing accuracy. Regular use supports longevity of the pump, heater, sender, injector and mixer parts commonly affected by crystallization.

• Targets crystal formation mechanisms to reduce buildup.
• Helps maintain steady DEF dosing and injector performance.
• Reduces frequency of manual cleaning or component replacement.

When and how much should I add to my DEF tank?

Add the treatment each time you refill the DEF/AdBlue tank. Dosage varies by vehicle type and equipment size to provide the intended protection without over-concentrating the fluid. Pour the measured amount directly into the DEF tank or into the DEF bottle/cube while refilling.

• Cars and small SUVs: 2 ounces per refill.
• Light trucks, mid-size to large SUVs: 4 ounces per refill.
• Medium/heavy-duty trucks and large equipment: 8 ounces per refill.
• Equipment cubes (2.5 gal): 2 ounces; machinery: 8 ounces per 10 gallons.

Will this treatment work with all types of DEF or affect warranties?

Rislone Diesel DEF Treatment is designed to be compatible with urea-based DEF/AdBlue formulations used across vehicle and equipment makes. It is formulated to work with factory fluids and is intended not to void new vehicle warranties when used as directed. Always follow the vehicle maker’s guidance and the product dosing instructions.

• Compatible with UREA AdBlue and standard DEF products.
• Formulated to avoid adverse interactions with DEF chemistry.
• Use per directions to remain consistent with manufacturer guidance.

How does routine use affect maintenance and operating costs?

Preventing or reducing crystalline deposits can lower the chance of costly SCR repairs or component replacements. Cleaner DEF systems also help maintain reliable emissions control performance and can prevent unexpected downtime for diesel vehicles and machinery. Regular dosing is a simple preventive step compared with the expense and labor of cleaning or parts replacement.

• Decreases likelihood of pump, injector and line failures from deposits.
• Helps avoid downtime for deposit removal and repairs.
• Supports consistent DEF dosing that helps emissions systems run as intended.

Who is this for? Rislone 4780-6PK Diesel DEF Treatment is aimed at diesel vehicle owners, fleet managers and equipment operators who refill DEF/AdBlue regularly and want to reduce the risk of crystallization-related problems. It is particularly useful for vehicles that do frequent short trips, operate at low load or low speed, or spend long idle periods—conditions that can increase deposit formation. Sold as an economical 6-pack of 8 oz bottles, it provides multiple refills for cars, trucks and machinery when used according to the dosing chart.