Rislone Crystal Clean AdBlue DEF System Cleaner

Use When You Notice…

• SCR or DEF warning light on the dashboard: Crystal deposits disrupt concentration sensors — this adblue cleaner targets the root cause, not just the symptom.
• Vehicle entering limp mode unexpectedly: BS-VI vehicles restrict power when the SCR detects a fault; dissolving crystals can restore full operation without a workshop visit.
• White crusty build-up around the blue DEF filler cap: Visible crystallisation outside means deposits inside the tank and lines are already worse.
• Irregular DEF consumption or frequent top-ups: Blocked injectors cause inconsistent dosing — cleaning restores correct flow and accurate consumption.
• DEF pump sounds strained or cycles longer than usual: Partial blockages force the pump to overwork, risking premature failure costing thousands to replace.

Key Benefits

• Crystal Dissolution: Breaks up biuret and cyanuric acid deposits that form when AdBlue is exposed to heat or sits unused in your tank.
• Limp Mode Prevention: Restoring clean DEF flow removes the fault trigger that forces BS-VI vehicles into power-restricted emergency mode.
• All-Season Performance: Conditions your DEF solution to perform reliably whether you are running a Tata Prima on a June highway or idling in a Delhi winter.
• Ash-Free, Catalyst-Safe: Contains zero ash-forming compounds — your SCR catalyst and DPF remain fully protected and uncontaminated.
• Cost Avoidance: A single bottle is a fraction of the cost of SCR dosing unit or injector replacement at an Ashok Leyland or Mahindra authorised centre.

The Technology Inside

Rislone Crystal Clean uses ash-free urea-compatible surfactants and dispersion agents that penetrate and break apart the hard crystal structures — primarily biuret and cyanuric acid — that form when urea decomposes under heat or stagnant storage conditions. Unlike generic flushing agents, this adblue additive is formulated to be chemically neutral with ISO 22241-grade AdBlue, meaning it will not alter urea concentration beyond tolerance or introduce any element that damages the selective catalytic reduction substrate. The conditioners also lower the surface tension of the DEF solution, improving atomisation at the dosing injector — which is especially critical during cold start sequences in North India winters when DEF viscosity increases. The result is restored sensor accuracy, correct NOx conversion efficiency and a system that behaves as the manufacturer intended.

Dosage & Coverage

Dose at 30 ml (1 oz) per 38 litres (10 gallons) of DEF capacity — refer to the label chart for your exact tank size. Add directly into the blue-capped DEF/AdBlue filler only; never add to the diesel fuel tank or engine oil. Use a double dose when heavy crystallisation is already present, and treat every second or third DEF top-up as routine prevention.

Compatibility

Safe to use with

• All BS-VI (Euro 6) diesel vehicles fitted with SCR after-treatment and ISO 22241-compliant AdBlue/DEF systems.
• Trucks, buses, coaches and commercial vehicles — including Tata Prima, Ashok Leyland heavy vehicles and Force Motors fleet vehicles.
• BS-VI diesel SUVs and pick-ups — Mahindra Scorpio-N, TUV300+, XUV700 diesel and similar platforms.
• Compatible with standard ISO 22241 AdBlue from any Indian supplier.

Not suitable for

• Do not add to the diesel fuel tank, engine oil or any fluid other than the DEF/AdBlue tank.
• Cannot repair physical SCR catalyst damage, failed NOx sensors or worn DEF pump components — mechanical faults require workshop attention.
• Not intended for BS4 or earlier vehicles that do not have an SCR/AdBlue system fitted.

Why It Matters in India

Indian BS-VI commercial vehicles face a crystallisation problem that European markets rarely see at the same severity — summer temperatures above 45°C bake AdBlue in tanks and lines, while North India winters drop below 3°C and cause DEF to thicken around cold injectors. Long highway runs on NH-44 or NH-48 without engine-off cooling cycles accelerate deposit build-up in Tata and Ashok Leyland fleet vehicles. SCR dosing unit replacements at authorised service centres routinely cost ₹40,000–₹1,50,000, making a preventive DEF treatment one of the highest-return maintenance steps an Indian fleet owner or individual driver can take.

How To Use

1. Locate the blue-capped DEF/AdBlue filler — separate from the diesel filler — and note your tank capacity.
2. Use the bottle dosage chart to measure the correct amount: 30 ml per 38 litres of DEF capacity.
3. Pour the measured dose directly into the DEF tank, then top up with fresh AdBlue as required.
4. Start the engine and drive normally — the cleaner circulates through the system during operation.

Safety Note: AdBlue is mildly corrosive — avoid skin and eye contact. Keep the DEF filler cap clean and replace it securely after dosing to prevent contamination.

Frequently Asked Questions

Can this product clear existing SCR fault codes?

If the fault code is triggered by DEF crystallisation blocking flow or skewing concentration sensor readings, dissolving the deposits can clear the code and restore normal operation. Fault codes caused by physical catalyst damage, a failed NOx sensor or a mechanically worn DEF pump will require workshop diagnosis and repair.

How often should I use this adblue additive?

As a preventive measure, add one dose every second or third DEF top-up under normal conditions. If your vehicle operates in extreme heat — Rajasthan, Gujarat summers — or in sub-zero North India winters, treat every DEF fill for best results.

Is it safe for my Tata or Ashok Leyland truck's SCR system?

Yes. The ash-free, ISO 22241-compatible formula is safe for all OEM SCR systems used by Tata Motors, Ashok Leyland, Mahindra and other Indian BS-VI vehicle manufacturers. It will not contaminate your AdBlue or harm the SCR catalyst or DPF.

Will it help my vehicle pass PUC emission tests?

A fully functioning SCR system converts NOx emissions efficiently, which directly supports passing tailpipe emission checks. By keeping your DEF system crystal-free and dosing correctly, this cleaner helps maintain the NOx conversion your BS-VI engine was calibrated to deliver.

Is Cash on Delivery available, and how quickly will it arrive?

Yes — COD is available across India, and delivery is free nationwide. Most orders reach metros like Delhi, Mumbai, Bengaluru and Chennai within 3–5 business days; remote locations may take a little longer.

Complete Your Kit

Pair this DEF cleaner with these Rislone products for complete BS-VI diesel system protection.

• Rislone Hy-per Diesel Complete Fuel System Treatment: Cleans injectors, boosts cetane, reduces black smoke and helps cold starts — the best partner product for total BS-VI diesel maintenance.

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