Rislone Crystal Clean

Use When You Notice…

• SCR or AdBlue warning light on the dashboard: Crystal blockages disrupt DEF flow and trigger sensor errors — this def cleaner additive dissolves the root cause before the 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 liquid treatment can dissolve.
• DEF pump sounds strained or consumption is irregular: Partial blockages make the pump work harder and skew concentration readings — a clean system restores accurate dosing.
• Vehicle returning from a long hot highway run: High ambient temperatures accelerate urea crystallisation in idle SCR lines; dose immediately after heavy-duty use.

Key Benefits

• Dissolves Existing Deposits: Targets biuret and cyanuric acid crystals throughout your DEF system — tank, pump, lines, and dosing injector — in one treatment.
• Prevents Limp Mode: Restoring unobstructed DEF flow removes the trigger for ECU-enforced power reduction, keeping your vehicle road-legal and moving.
• All-Season Performance: Conditions your DEF liquid for reliable atomisation whether you are crossing the Thar Desert in May or driving through a Delhi winter in January.
• Ash-Free and DPF-Safe: Zero metallic ash content means no risk of DPF contamination or SCR catalyst damage — safe for all BS6 after-treatment systems.
• Saves on Workshop Costs: SCR pump or injector replacement in India runs ₹25,000–₹1,50,000; regular preventive dosing costs a fraction of that.

The Technology Inside

Rislone Crystal Clean uses a precisely balanced blend of ash-free, urea-compatible surfactants and chelating agents that penetrate and break apart the crystalline lattice structures formed by biuret and cyanuric acid — the two primary degradation products of urea-based DEF. Unlike water alone, the formula lowers the surface tension inside DEF lines and dosing injectors, allowing dissolved crystal fragments to pass harmlessly through the SCR catalyst without contaminating it. The additive also stabilises the urea concentration of your AdBlue solution, correcting the dilution errors that trigger fault code P20EE on Indian BS6 vehicles. Because the formula contains no sulphated ash, phosphorus, or metallic compounds, it meets the purity requirements of ISO 22241 — the same standard your AdBlue must meet — and poses zero risk to the selective catalytic reduction catalyst or the diesel particulate filter downstream.

Dosage & Coverage

Dose at 1 oz (approximately 30 ml) per 10 gallons (38 litres) of DEF — refer to the label dosage chart for your exact tank size. Add the liquid directly into the blue-capped DEF/AdBlue filler only — never into the diesel fuel tank or engine oil. Use a double dose when heavy crystallisation is already present; return to the standard preventive dose every second or third DEF top-up thereafter, 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
• Trucks, buses, SUVs, and commercial vehicles with SCR after-treatment systems
• Mahindra TUV300+, Scorpio-N diesel, Tata Prima trucks, Ashok Leyland heavy vehicles, Force Motors diesel vans
• All AdBlue brands sold at Indian fuel stations and authorised service centres
• Systems operating on biodiesel blends where SCR is fitted

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, sensors, or pumps
• Will not clear fault codes caused by a faulty NOx sensor or wiring issue

Why It Matters in India

Indian BS6 commercial vehicles — Tata Prima trucks, Ashok Leyland heavy vehicles, and Mahindra SUVs — face uniquely harsh SCR conditions: temperatures above 45°C in Rajasthan and Gujarat accelerate urea crystallisation in parked vehicles, while North India winters in Delhi, Chandigarh, and Amritsar drop below 3°C, causing DEF to thicken and flow poorly. Dusty road conditions clog DEF tank vents, worsening concentration inside the system. SCR component replacement at an authorised workshop can cost ₹25,000–₹1,50,000 — regular treatment with a quality def cleaner additive is cheap, practical insurance that also helps your vehicle pass PUC emission checks by keeping NOx reduction efficient.

How To Use

1. Check your DEF tank capacity and read the dosage chart on the bottle label.
2. Pour the measured amount directly into the blue-capped DEF/AdBlue filler — not the fuel tank.
3. Use a double dose if visible crystallisation or a fault code is already present.
4. Top up your AdBlue as normal and run the vehicle to allow full circulation.

Safety Note: AdBlue is mildly corrosive — avoid contact with eyes and painted surfaces. Keep the DEF filler cap tightly closed after dosing to prevent contamination.

Frequently Asked Questions

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

If the fault code is caused by DEF crystallisation blocking flow or contaminating concentration readings, dissolving the crystals can allow the code to clear once the ECU detects restored DEF quality. Codes arising from physical catalyst damage, a failed NOx sensor, or wiring faults require mechanical repair at an authorised service centre.

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

Add Crystal Clean every second or third DEF top-up as a preventive measure. If you operate in extreme heat — long highway runs in summer — or in cold North India winters below 3°C, dose at every DEF fill for best protection.

Is it safe for my BS6 Tata or Mahindra diesel vehicle?

Yes. The ash-free, ISO 22241-compatible formula is safe for all BS6 SCR and DPF systems fitted to Tata, Mahindra, Ashok Leyland, Force Motors, and imported diesel vehicles sold in India. It will not void your manufacturer warranty.

Will it help my vehicle pass the PUC emission test?

A clean, correctly functioning SCR system reduces NOx emissions efficiently — which is exactly what your BS6 engine is designed to achieve. By keeping DEF flowing and dosing accurately, Crystal Clean helps your SCR system perform as designed, supporting cleaner exhaust and better PUC compliance.

Is Cash on Delivery available and how fast will it arrive?

Yes — naredi.in offers Cash on Delivery and free delivery across India. Most orders are dispatched within 24 hours and reach metro cities within 3–5 business days.

Complete Your Kit

Keep your entire BS6 diesel system clean and performing at its best with these companion Rislone treatments.

• Rislone Hy-per Diesel Complete Fuel System Treatment — cleans injectors, boosts cetane rating of Indian pump diesel, reduces black smoke, and improves cold starts in North India winters; pairs perfectly with Crystal Clean for total diesel system care.

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