Rislone Crystal Clean AdBlue DEF System Cleaner

Use When You Notice…

• SCR or AdBlue warning light on 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 that this treatment dissolves.
• DEF pump sounds strained or consumption is irregular: Partial blockages force the pump to work harder and skew dosing accuracy — clear signs your DEF system needs attention immediately.
• Vehicle fails PUC emission test or shows black smoke: A malfunctioning SCR system reduces NOx conversion efficiency, which can affect emission readings and invite NGT scrutiny.

Key Benefits

• Crystal Dissolution: Breaks down biuret and cyanuric acid deposits throughout the entire DEF system — tank, pump, lines, and dosing injector — in one treatment.
• Limp Mode Prevention: Restores correct DEF concentration and flow so the ECU does not escalate warnings to power-restricting limp mode.
• All-Season Performance: Conditions the AdBlue solution to perform reliably in Delhi's 45°C summers and Chandigarh's sub-3°C December nights.
• DPF-Safe, Ash-Free Formula: Contains zero ash-forming compounds — safe for DPF-equipped BS6 diesel vehicles as well as SCR after-treatment systems.
• Cost Protection: A single bottle is cheap insurance against SCR catalyst or DEF pump replacement bills of ₹25,000–₹1,50,000 at authorised service centres.

The Technology Inside

Rislone Crystal Clean uses a precisely balanced package of urea-compatible surfactants and chelating agents that penetrate and destabilise the crystalline lattice structure of biuret and cyanuric acid — the two most common degradation products of urea-based DEF. Unlike generic AdBlue additives, this formula is ionic-strength matched to ISO 22241 urea solution so it does not alter DEF concentration beyond specification. It also coats internal surfaces with a thin protective film that slows future nucleation, the process by which dissolved urea begins to solidify into crystals during temperature cycling. The result is restored DEF atomisation quality at the dosing injector, which directly improves SCR catalyst NOx conversion efficiency — meaning your BS6 vehicle keeps passing emission norms without mechanical intervention.

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 is already present or when warning lights have appeared. For preventive AdBlue tank cleaning, treat every second or third DEF top-up, or at every fill if operating in extreme heat or cold.

Compatibility

Safe to use with

• All BS6 (Euro 6) diesel vehicles using ISO 22241-compliant AdBlue or DEF
• Tata Prima, Tata Signa, and Tata Safari/Harrier diesel (BS6)
• Ashok Leyland heavy commercial vehicles with SCR after-treatment
• Mahindra TUV300+, Scorpio-N, and XUV700 diesel variants
• Force Motors Traveller and Gurkha BS6 diesel
• All AdBlue brands sold at Indian fuel stations and OEM service centres
• Bio-diesel blends commonly used in Indian commercial fleets

Not suitable for

• Do not add to diesel fuel tank or engine oil — DEF/AdBlue tank only
• Cannot repair physically damaged SCR catalysts or faulty DEF sensors — mechanical faults require workshop repair
• Not intended for petrol (gasoline) vehicles or non-SCR diesel systems

Why It Matters in India

Indian BS6 commercial vehicles — Tata Prima trucks, Ashok Leyland heavy vehicles, and newer Mahindra SUVs — face severe DEF crystallisation on long, hot highway runs and dusty conditions across Rajasthan and Punjab. Cold snaps in Delhi NCR, Amritsar, and Chandigarh cause DEF to partially freeze and then re-crystallise on warming, accelerating deposit build-up inside pumps and injectors. With odd-even rules, NGT pollution notices, and strict PUC certificate requirements in major cities, a failing SCR system is both an expensive repair and a compliance risk. Regular DEF system maintenance with this cleaner is the most cost-effective way to stay compliant and avoid roadside breakdowns.

How To Use

1. Check your DEF tank capacity and calculate the correct dose using the bottle chart.
2. Pour the measured liquid directly into the blue-capped AdBlue filler — not the diesel filler.
3. Use a double dose if warning lights are active or visible crystallisation is present.
4. Top up your AdBlue to the normal level and drive as usual — no warm-up procedure required.

Safety Note: DEF is corrosive to skin and eyes — wear gloves when handling. Keep this product out of reach of children and store away from direct sunlight.

Frequently Asked Questions

Can this product clear existing SCR fault codes?

If the fault code is caused by DEF crystallisation blocking flow or contaminating concentration sensor readings, dissolving the crystals can allow the ECU to clear the code after a successful drive cycle. Fault codes caused by physical catalyst damage, a failed NOx sensor, or a burnt-out DEF pump require mechanical diagnosis and repair — this product cannot fix hardware failures.

How often should I treat my AdBlue system?

Add with every second or third DEF top-up as a preventive measure for most Indian conditions. If your vehicle operates in extreme heat (Rajasthan, Gujarat summers) or sub-zero North India winters, treat at every DEF fill to prevent crystal nucleation during temperature swings.

Is it safe for my BS6 Tata or Mahindra diesel?

Yes — the ash-free, ISO 22241-compatible formula is fully safe for all BS6 SCR and DPF systems fitted to Tata, Mahindra, Ashok Leyland, and Force Motors diesel vehicles. It does not alter AdBlue concentration beyond OEM specification and will not void your manufacturer warranty when used as directed.

Will this help my vehicle pass a PUC emission test?

A clean, fully functional SCR system converts NOx more efficiently, which directly supports lower tail-pipe emissions and a better chance of passing PUC checks. This product restores SCR function by clearing blockages — it is not a last-minute emission additive and works best as part of regular maintenance.

Is Cash on Delivery available and how fast is delivery?

Yes — naredi.in offers Cash on Delivery across India with free shipping on all orders. Most metro cities receive delivery within 3–5 business days; remote locations may take slightly longer. WhatsApp us on +91 93112 11157 for order tracking.

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 injectors, boosts cetane rating of Indian pump diesel, reduces black smoke, improves cold starts in North India winters, and helps maintain DPF health alongside your SCR 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