Rislone Diesel Exhaust Fluid (DEF) Treatment Super Concentrate — 1-Pack, Prevents DEF Crystals & Protects SCR Components

Rislone 4782 Diesel Exhaust Fluid Treatment Super Concentrate is a preventative additive designed to stop white crystalline deposits in SCR/DEF systems when added to DEF tanks or bulk containers at recommended dosages.

Selective Catalytic Reduction (SCR) systems rely on urea-based Diesel Exhaust Fluid (DEF or AdBlue) to reduce emissions, but over time crystalline deposits can form inside tanks, pumps, heaters, lines and mixers. These deposits are expensive to repair and can degrade engine efficiency and DEF dosing accuracy. Rislone 4782 is formulated to be mixed into DEF drums, totes, pails or vehicle tanks to reduce the conditions that lead to crystallization and help maintain system reliability.

How do I use this concentrate with different DEF container sizes?

The product is added directly to the DEF container at precise, small dosages so the treatment disperses evenly without altering DEF chemistry when used as directed. Follow the dosage chart for accurate mixing, then top up or refill the DEF system as usual.

• 0.6 ounce per gallon of DEF
• 1.5 ounces per 2.5-gallon cube
• 3 ounces per 5-gallon pail
• 1 bottle treats a 55-gallon drum
• 6 bottles treat a 275–330 gallon IBC/tote

What parts of the SCR/DEF system does it protect?

Regular use helps limit crystal formation throughout the DEF delivery and storage network so pumps, heaters, sensors and injectors stay cleaner and maintain accurate dosing. That reduces the risk of clogged lines or damaged components that would otherwise require costly service.

• DEF tank interior and filler necks
• Pumps, sender units and heaters
• Supply lines, injectors and mixers
• Bulk storage drums, pails and IBC totes

Will Rislone 4782 work with my vehicle’s DEF or AdBlue product?

The concentrate is compatible with all urea-based DEF and AdBlue formulations; it’s designed to be safe with manufacturer-specified fluids when added at recommended rates. Using the treatment as directed will not void typical new-vehicle warranties.

• Formulated for urea-based DEF/AdBlue
• Safe for vehicles and equipment when dosed correctly
• Suitable for OEM and aftermarket systems
• Intended as preventative maintenance, not a repair for already-severe deposits

How often should I add the treatment to keep the SCR system healthy?

For best results, add Rislone 4782 each time you refill the vehicle DEF tank or replenish a bulk supply. Regular dosing prevents progressive buildup that is more likely in low-speed, stop-and-go, or short-trip duty cycles.

• Add with every DEF refill on vehicles
• Treat bulk drums and totes when filling or before long-term storage
• Particularly recommended for frequent stop-start or low-load applications
• Consistent use reduces the chance of unexpected SCR component failures

Who is this for: Rislone 4782 is aimed at fleet managers, owner-operators, equipment owners and maintenance shops that use diesel vehicles or machinery with SCR systems and want a preventive, easy-to-dose product to reduce the risk of DEF crystallization. It’s especially helpful for machines operated at low speeds, short runs or in urban stop-and-go service where crystallization risk is higher.