Rislone DEF Clean AdBlue System Cleaner

Use When You Notice…

• SCR or DEF warning light on the dashboard: Crystallisation blocks DEF flow and triggers fault codes — this DEF cleaner additive dissolves the blockage before it escalates to a costly workshop visit.
• Vehicle entering limp mode unexpectedly: A restricted DEF system forces the ECU into limp mode; restoring clean flow can clear the condition without an expensive dealer repair.
• White crusty deposits around the blue DEF filler cap: Visible urea residue signals heavy crystallisation forming inside lines and the pump — act before the pump seizes.
• DEF pump sounding strained or consumption irregular: Partial blockages make the pump overwork and skew concentration readings, accelerating wear and wasting your DEF liquid.
• Long highway runs in peak Indian summer heat: Temperatures above 40°C accelerate urea evaporation and crystal formation in the AdBlue tank — dose before every long run.

Key Benefits

• Dissolves Existing Crystals: Breaks up urea deposits — biuret and cyanuric acid — that block your AdBlue tank, lines and dosing injector.
• Prevents Limp Mode: Restores correct DEF concentration and flow so the ECU does not trigger SCR fault codes or restrict engine power.
• All-Season Performance: Keeps your def system flowing reliably whether you are idling in Delhi traffic at 45°C or cold-starting in Amritsar at 2°C.
• Protects Expensive SCR Components: Regular treatment costs a fraction of replacing a DEF pump, dosing injector or SCR catalyst damaged by prolonged crystallisation.
• Ash-Free Formula: Contains zero ash-forming compounds — fully compatible with def in diesel SCR after-treatment systems and ISO 22241 AdBlue standards.

The Technology Inside

Rislone DEF Clean uses a precisely balanced blend of urea-compatible surfactants and organic dispersants that penetrate and break apart the crystal lattice structures formed by urea decomposition byproducts — primarily biuret and cyanuric acid — which are the leading cause of SCR system fouling in Indian operating conditions. The formula conditions the AdBlue solution itself, restoring correct urea concentration (32.5%) so the NOx reduction reaction across the SCR catalyst runs at peak efficiency. Unlike generic cleaners, the ash-free chemistry leaves zero metallic or inorganic residue that could poison the vanadium or zeolite catalyst substrate. It also lowers the effective freeze-point onset of the treated DEF, reducing the risk of partial crystallisation during cold overnight soaks — a common issue in North India winters that leaves dosing injectors partially obstructed by morning.

Dosage & Coverage

Dose at approximately 30 ml per 38 litres of AdBlue, adding directly and only into the blue-capped DEF/AdBlue filler — never into the diesel fuel tank or engine oil. Use a double dose when heavy crystallisation or warning lights are already present. For preventive maintenance, treat every second or third DEF top-up, or every fill if your vehicle operates in extreme heat or North India cold.

Compatibility

Safe to use with

• All BS-VI (Euro 6) diesel vehicles using ISO 22241-compliant AdBlue or DEF liquid
• Commercial trucks and buses — Tata Prima, Ashok Leyland, BharatBenz, Eicher Pro series
• Passenger SUVs and MPVs — Mahindra Scorpio-N, XUV700, Tata Safari, Force Gurkha and similar BS-VI diesel models
• Construction and agricultural equipment fitted with Stage V / BS-VI SCR after-treatment systems

Not suitable for

• Do not add to the diesel fuel tank, engine oil or any fluid other than the AdBlue/DEF tank
• Cannot repair physical SCR catalyst damage, failed NOx sensors or cracked DEF lines — mechanical repair required
• Not intended for BS-IV or older vehicles without an SCR/AdBlue system

Why It Matters in India

Indian BS-VI commercial vehicles face uniquely harsh DEF conditions: summer temperatures in Rajasthan and Gujarat regularly exceed 45°C, accelerating urea evaporation and crystal formation, while North India winters push overnight lows below 3°C, causing partial DEF freezing in exposed lines. Dusty highway conditions on NH-44 and NH-48 mean DEF tank caps are opened more frequently, introducing contamination risk. SCR component replacement on a Tata Prima or Ashok Leyland heavy vehicle can cost ₹75,000–₹1,50,000 at an authorised service centre — making regular DEF system maintenance with a quality def cleaner one of the most cost-effective decisions a fleet operator or owner-driver can make.

How To Use

1. Check your DEF tank capacity using the dosage chart printed on the bottle label.
2. Pour the measured amount directly into the blue-capped AdBlue filler only — not the diesel tank.
3. Use a double dose if crystallisation deposits or warning lights are already present.
4. Top up the DEF tank to its normal level with fresh ISO 22241 AdBlue and drive normally.

Safety Note: AdBlue/DEF is a separate fluid from diesel — always use the blue filler cap. Keep this product away from children. Rinse skin or eyes with water if contact occurs.

Frequently Asked Questions

Can this clear existing SCR fault codes on my BS-VI vehicle?

If the fault code is caused by DEF crystallisation blocking flow or skewing urea concentration readings, dissolving the crystals can allow the code to clear after a normal drive cycle. Fault codes caused by physical catalyst damage, failed NOx sensors or broken wiring require mechanical diagnosis and repair at a service centre.

Is it safe for my Mahindra or Tata BS-VI diesel SUV or truck?

Yes — the ash-free, ISO 22241-compatible formula is safe for every BS-VI SCR system including those fitted to Mahindra XUV700, Tata Safari, Tata Prima trucks and Ashok Leyland commercial vehicles. It introduces no compounds that could harm the SCR catalyst or DPF.

How often should I dose to prevent crystal build-up?

As a preventive measure, add one dose every second or third AdBlue top-up under normal conditions. If your vehicle operates in extreme Indian summer heat or North India winters below 3°C, treat every DEF fill for continuous protection.

Will it help my vehicle pass a PUC emission test?

A clean, fully functioning SCR system reduces NOx emissions as designed, which supports clean diesel exhaust output and helps maintain emission compliance. If crystallisation was reducing SCR efficiency, restoring clean flow can improve NOx conversion and bring emissions back within BS-VI limits.

Is Cash on Delivery available and how fast is delivery?

Yes — naredi.in offers Cash on Delivery and free delivery across India. Most orders are dispatched within 1–2 business days, with delivery typically in 4–7 days depending on your location.

Complete Your Kit

Pair Rislone DEF Clean with these complementary products for complete BS-VI diesel system protection.

• Rislone Hy-per Diesel Complete Fuel System Treatment: Cleans fuel injectors, boosts cetane, reduces black smoke and protects your entire clean diesel exhaust system — the ideal partner to DEF Clean for full BS-VI drivetrain 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