Rislone Crystal Clean AdBlue DEF System Cleaner

Use When You Notice…

• SCR or AdBlue warning light on the 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 the highway: 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 — exactly what this treatment dissolves.
• DEF pump sounds strained or consumption is irregular: Partial blockages force the pump to overwork and skew dosing accuracy — clear the system before the pump fails entirely.
• Preventive maintenance before summer or winter: Extreme temperatures accelerate crystallisation; treat your DEF tank at the start of each season to avoid mid-journey failures.

Key Benefits

• Crystal Dissolution: Breaks up biuret and cyanuric acid deposits in your DEF tank, pump, and dosing injectors — restoring full SCR function in one treatment.
• Limp Mode Prevention: Clean DEF flow keeps your ECU satisfied, preventing power-cut events that strand commercial vehicles on busy Indian highways.
• Temperature Resilience: Conditions the AdBlue solution to perform correctly from Rajasthan's 48°C summers to Shimla's sub-zero winters without crystal reformation.
• DPF & Catalyst Safe: Ash-free formula introduces nothing harmful to your DPF or SCR catalyst — critical for maintaining BS6 emission compliance and passing PUC checks.
• Cost Saving: At a fraction of the cost of SCR component replacement, regular DEF treatment is cheap insurance for fleet operators and private owners alike.

The Technology Inside

Rislone Crystal Clean uses a precisely balanced package of ash-free urea-compatible solvents and surfactants that penetrate and break apart the crystalline lattice structures formed by biuret and cyanuric acid — the two most common degradation products of urea in AdBlue. Unlike harsh solvents, this formula is engineered to remain fully miscible with ISO 22241-compliant DEF fluid, so it corrects the AdBlue concentration rather than contaminating it. It also conditions the surface tension of the DEF solution, improving atomisation efficiency at the dosing injector — a critical factor when Indian temperatures push components to their limits. The result is restored SCR catalyst conversion efficiency, lower NOx output at the tailpipe, and a system that reads as healthy to your vehicle's OBD-II diagnostics.

Dosage & Coverage

Add 1 oz (approximately 30 ml) per 10 gallons (38 litres) of DEF directly into the blue-capped AdBlue filler — never into the diesel fuel tank or engine oil. Use a double dose when heavy crystallisation or an active SCR warning is already present. For ongoing prevention, treat every second or third DEF top-up, or at every fill if your vehicle operates in extreme heat or cold.

Compatibility

Safe to use with

• All BS6 (Euro 6) diesel vehicles using ISO 22241-compliant AdBlue or DEF fluid
• Trucks, buses, SUVs, and commercial vehicles with SCR after-treatment systems
• Mahindra, Tata, Ashok Leyland, Force Motors, and other Indian diesel vehicle brands
• All AdBlue brands available at Indian fuel stations and authorised service centres
• Vehicles with DPF (Diesel Particulate Filter) — ash-free formula is fully DPF-safe

Not suitable for

• Do not add to the diesel fuel tank or engine oil — DEF/AdBlue tank only
• Cannot repair physical damage to SCR catalysts, NOx sensors, or DEF pumps
• Will not clear fault codes caused by failed sensors or wiring faults — mechanical diagnosis required

Why It Matters in India

Indian BS6 commercial vehicles — Tata Prima trucks, Ashok Leyland heavies, Mahindra TUV300+ and newer SUVs — face some of the world's harshest operating conditions: 45°C+ highway runs through Rajasthan, dusty unpaved detours, and then sub-3°C winter mornings in Delhi, Chandigarh, and Amritsar. These swings accelerate urea crystallisation faster than in any temperate market. SCR component replacement at an authorised service centre can run ₹25,000–₹1,50,000 — a crippling cost for fleet operators already managing rising fuel bills. Regular AdBlue system cleaning is the single most cost-effective maintenance step for any BS6 diesel owner in India.

How To Use

1. Check your DEF tank capacity using the dosage chart printed on the bottle.
2. Add the correct measured amount directly into the blue DEF/AdBlue filler cap — not the diesel tank.
3. Use a double dose if crystallisation deposits or an active SCR warning light is already present.
4. Top up your AdBlue fluid as normal and drive — the formula works as the system circulates.

Safety Note: AdBlue is corrosive to skin and eyes — wear gloves when handling. Never add this product to diesel fuel, engine oil, or coolant. Store away from direct sunlight and out of reach of children.

Frequently Asked Questions

Can this product clear existing SCR fault codes?

If the fault code is triggered by DEF crystallisation blocking flow or contaminating concentration readings, dissolving those crystals can allow the ECU to clear the code after a drive cycle or two. Fault codes caused by physical catalyst damage, failed NOx sensors, or wiring faults will require mechanical diagnosis and repair at a service centre.

How often should I use this DEF cleaner?

As a preventive measure, add it every second or third AdBlue top-up. If your vehicle operates in extreme heat (Rajasthan, Gujarat summers) or cold (North India winters), treat at every fill to prevent crystal build-up before it starts.

Is it safe for my BS6 Tata, Mahindra, or Ashok Leyland vehicle?

Yes — the ash-free formula is fully compatible with ISO 22241-compliant AdBlue systems fitted to all Indian BS6 diesel vehicles, including Tata, Mahindra, Ashok Leyland, and Force Motors models. It will not harm your DPF, SCR catalyst, or AdBlue pump.

Will this help my vehicle pass a PUC emission test?

A clean, fully functional SCR system converts NOx more efficiently, which reduces tailpipe emissions. While this product targets DEF crystallisation rather than fuel combustion, restoring your SCR system to full efficiency directly supports lower emission readings at a PUC check.

Is Cash on Delivery available? How long does delivery take?

Yes — Cash on Delivery is available across India through naredi.in, with free shipping on all orders. Most metro and Tier-1 city orders are delivered within 3–5 business days; remote pin codes may take a day or two longer.

Complete Your Kit

Pair this AdBlue system cleaner with these Rislone products for complete BS6 diesel protection.

• Rislone Hy-per Diesel Complete Fuel System Treatment — cleans fuel injectors, boosts cetane rating of Indian pump diesel, reduces black smoke, and improves cold starts in North India winters; the ideal companion to DEF system maintenance for total BS6 diesel health.

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