Rislone Crystal Clean AdBlue DEF System Cleaner

Use When You Notice…

• SCR or AdBlue warning light on your dashboard: Crystal blockages disrupt DEF flow and trigger sensor errors — this cleaner dissolves the root cause before your ECU escalates to limp mode.
• Vehicle entering limp mode on highways: Restricted DEF delivery forces the ECU to cut power; restoring clean flow removes the trigger without a costly workshop visit.
• White crusty deposits around the blue DEF filler cap: Visible crystallisation outside signals heavier build-up inside lines and injectors that this treatment dissolves.
• DEF pump sounds strained or consumption is irregular: Partial blockages make the pump work harder and skew dosing accuracy — a clear sign your DEF system needs attention.
• Preparing for extreme seasons: Before peak Indian summer or a North India winter, a preventive dose keeps your SCR system ready for temperature extremes.

Key Benefits

• Dissolves Existing Crystals: Breaks down biuret and cyanuric acid deposits in tanks, pumps, and dosing injectors — restoring full DEF flow in one treatment.
• Prevents Limp Mode: Clears the crystallisation root cause behind SCR fault codes, keeping your BS6 diesel vehicle out of limp mode and on the road.
• All-Season Performance: Conditions DEF atomisation quality whether you are running through 45°C Rajasthan heat or sub-3°C Delhi winter mornings.
• Ash-Free & DPF-Safe: Contains zero metallic ash — completely safe for your DPF and ISO 22241-compliant SCR catalyst, with no risk of contamination.
• Saves Significant Repair Costs: SCR component replacement runs ₹25,000–₹1,50,000; regular DEF treatment costs a fraction and keeps those bills away.

The Technology Inside

Rislone Crystal Clean uses a proprietary blend of ash-free urea-compatible solvents that penetrate and break apart the crystalline matrix of biuret and cyanuric acid — the two most common degradation products of urea in AdBlue. Unlike generic cleaners, the formula is pH-balanced to remain fully compatible with the sensitive SCR catalyst and does not alter the 32.5% urea concentration that ISO 22241 mandates. It also conditions the DEF solution's surface tension, improving dosing injector atomisation so that the fine DEF mist reaches the SCR catalyst evenly — critical when Indian pump temperatures push fluid viscosity toward its limits. The result is restored NOx conversion efficiency, which directly helps your vehicle maintain clean exhaust and pass PUC emission checks without triggering AdBlue-related fault codes.

Dosage & Coverage

Add 1 oz (approximately 30 ml) per 10 gallons (38 litres) of DEF capacity, following the dosage chart on the bottle label. Pour directly into the blue-capped DEF/AdBlue filler tank only — never into the diesel fuel tank or engine oil. Use a double dose when heavy crystallisation deposits are already present; thereafter, treat every second or third DEF top-up as preventive maintenance, or at every fill if operating in extreme heat or cold.

Compatibility

Safe to use with

• All BS6 (Euro 6) diesel vehicles fitted with SCR after-treatment and ISO 22241-compliant AdBlue systems.
• Commercial vehicles: Tata Prima trucks, Ashok Leyland heavy buses, Mahindra TUV300+ and newer BS6 SUVs, Force Motors diesel vans.
• Passenger diesel cars with AdBlue tanks — Toyota Fortuner, Skoda Kushaq TDI, Volkswagen, MG, and similar.
• All AdBlue brands available at Indian fuel stations and authorised OEM service centres.
• DPF-equipped vehicles — ash-free formula poses zero risk to the diesel particulate filter.

Not suitable for

• Do not add to the diesel fuel tank — this is a DEF/AdBlue system cleaner only.
• Do not mix into engine oil or coolant.
• Cannot repair physical damage to SCR catalyst substrate or failed DEF sensors — mechanical repair is required for those faults.
• Not intended for petrol (gasoline) vehicles without SCR systems.

Why It Matters in India

Indian BS6 commercial vehicles — Tata Prima trucks, Ashok Leyland heavies, Mahindra SUVs — clock long highway runs in 40–48°C summer heat, causing AdBlue to concentrate and crystallise in lines faster than anywhere in Europe. Northern states like Delhi, Chandigarh, and Amritsar then drop below 3°C in December, stressing DEF pumps further. SCR system failures here often mean NGT-triggered PUC failures and fines, not just a warning light. Regular DEF system cleaning is cheap, practical insurance for every Indian diesel owner and fleet operator.

How To Use

1. Locate the blue-capped DEF/AdBlue filler — separate from the diesel filler — and check your tank capacity using the bottle's dosage chart.
2. Pour the measured dose (or double dose for heavy build-up) directly into the DEF tank before or after topping up with fresh AdBlue.
3. Start the vehicle and drive normally; the cleaner circulates through the system and dissolves crystal deposits during regular operation.
4. Repeat every second or third DEF top-up as a preventive measure, or at every fill during peak summer and winter months.

Safety Note: Keep out of reach of children. Avoid contact with eyes. This product is for the AdBlue/DEF tank only — adding it to diesel fuel or engine oil will not provide any benefit and may cause harm.

Frequently Asked Questions

Can this cleaner clear existing SCR fault codes like P20EE or P204F?

If the fault code is caused by DEF crystallisation blocking flow or distorting concentration sensor readings, dissolving the crystals can allow the system to recover and the ECU to clear the code. Fault codes resulting from physical catalyst damage, failed NOx sensors, or wiring faults require a workshop visit and mechanical repair — the cleaner cannot address those causes.

How often should I use this to prevent crystal build-up?

As a preventive measure, add a dose every second or third DEF top-up under normal conditions. If your vehicle operates in extreme Indian summer heat (above 40°C) or North India winter cold (below 5°C), treat every DEF fill for continuous protection.

Is it safe for my BS6 vehicle's DPF and SCR catalyst?

Yes — the ash-free, metallic-compound-free formula is fully safe for DPF-equipped BS6 diesels and will not contaminate your SCR catalyst or alter the required 32.5% urea concentration of ISO 22241-compliant AdBlue.

Is this product available on Cash on Delivery (COD) through naredi.in?

Yes — naredi.in offers Cash on Delivery across India, so you can order with confidence and pay at your door. Free delivery is available nationwide, and a 14-day return and exchange policy applies if you are not satisfied.

Can I use this in my Tata or Ashok Leyland commercial truck?

Absolutely — this cleaner is compatible with all BS6 SCR-equipped commercial vehicles including Tata Prima, Ashok Leyland, Mahindra, and Force Motors trucks and buses that use standard ISO 22241 AdBlue. It is equally suitable for passenger SUVs and light commercial vehicles with AdBlue systems.

Complete Your Kit

Pair this AdBlue DEF system cleaner with these Rislone products for complete diesel drivetrain protection.

• Rislone Hy-per Diesel Complete Fuel System Treatment: Cleans injectors, boosts cetane rating of Indian pump diesel, reduces black smoke, improves cold starts in North India winters, and cuts NVH (Noise, Vibration, Harshness) — the perfect companion for your BS6 diesel engine while this cleaner looks after your DEF system.

Warranty & Support in India

• Warranty: 1-year warranty against manufacturing defects
• Customer Support: Monday–Saturday, 9 AM–6 PM IST. WhatsApp / Phone: +91 93112 11157 · hello@naredi.in
• Returns: 14-day return and exchange policy, COD returns accepted
• Delivery: Free delivery across India, Cash on Delivery available