Rislone Diesel DPF Cleaner 4-Pack — Concentrated DPF, DOC & Injector Cleaner for Passenger and Commercial Diesel Engines

Rislone 4744-4PK DPF Clean® is a concentrated diesel system cleaner that removes soot, carbon, and oily residues from the DPF, exhaust, fuel system and related emission components.

Rislone DPF Clean is formulated with strong detergents and solvents to dissolve and disperse the deposits that form during diesel combustion. Used at recommended intervals, it helps restore flow through the diesel particulate filter (DPF), diesel oxidation catalyst (DOC), EGR, turbocharger and fuel injectors without mechanical disassembly. The product is compatible with modern emission control devices and most diesel fuel types, and the four-bottle pack covers multiple treatments for passenger and commercial diesel vehicles.

How do I use this cleaner in my diesel tank?

Add the entire bottle to a partially filled tank following the label directions for tank size, then drive to allow the cleaner to circulate and work through the emissions system. For light-duty tanks, the bottle is added to roughly a quarter-full tank (or half-full for smaller cars) and requires a 20–30 mile drive. Medium and heavy duty tanks may need 1.5 to 2 bottles depending on capacity.

• Light duty: pour one bottle into ~1/4 tank (truck/SUV) or 1/2 tank (cars), drive 20–30 miles.
• Medium/heavy duty: 1.5 bottles for 40–80 gallon tanks; 2 bottles for 81+ gallons.
• If DPF fault remains, a second treatment or mechanical service may be needed.

What parts of the engine and emissions system does it affect?

The formula targets deposits throughout the fuel, combustion and exhaust pathways: fuel injectors, combustion chamber deposits, turbo, EGR valve, DOC, DPF and the exhaust piping. By chemically reacting with soot and inorganic residues, it loosens and helps remove material that restricts flow and impairs efficiency.

• Loosens carbon and soot in DPF and DOC to improve regeneration.
• Breaks down oily residues on injectors and combustion chambers for cleaner spray patterns.
• Clears EGR and turbo passages to reduce power loss and drivability issues.

Is this product safe for modern diesel emissions technology?

Yes — Rislone DPF Clean is engineered to be safe with DOCs, DPFs, SCR units and DEF systems when used as directed. It is compatible with ULSD and common diesel fuel blends including biodiesel blends up to B20. The manufacturer states it won’t void new vehicle warranties when used appropriately.

• Safe for DOC catalytic converters, DPF particulate filters and SCR systems.
• Works with ULSD, regular diesel, and biodiesel blends (B2, B5, B20).
• Helps reduce excessive forced regenerations when used regularly.

How often should I use it, and what results can I expect?

Regular application every 5,000 miles is recommended to maintain cleaner fuel and emission systems and to minimize frequent DPF regenerations. Users commonly see improved fuel economy, steadier power delivery and fewer regeneration cycles after successful treatments, though very clogged systems may require additional applications or mechanical cleaning.

• Routine use every 5,000 miles helps prevent heavy soot buildup.
• May clear P242F and related OBD codes in some cases.
• For severe blockage, expect to combine chemical treatment with forced regeneration or service.

Who is this for: Rislone 4744-4PK DPF Clean is intended for owners and fleet operators of diesel cars, light-duty trucks, commercial vehicles and heavy equipment who want a chemical maintenance option to reduce soot and carbon deposits across the fuel, combustion and exhaust systems. It suits drivers who perform periodic maintenance, use a range of diesel fuels (including compatible biodiesel blends), and who prefer a non-invasive treatment to help restore emissions component performance before pursuing mechanical service.