Rislone DEF Clean AdBlue System Cleaner

Use When You Notice…

• SCR or DEF warning light on the dashboard — crystallisation may be blocking flow or distorting concentration sensor readings; this AdBlue system cleaner dissolves the blockage before fault codes become permanent.
• Vehicle entering limp mode on the highway — a restricted AdBlue circuit triggers ECU protection; clearing crystals restores normal engine operation and prevents costly SCR component replacement.
• White crusty deposits around the DEF filler cap — visible urea crystals outside the tank signal internal build-up that worsens rapidly under Indian heat and dust conditions.
• Irregular DEF consumption or strained DEF pump noise — partial blockages force the pump to overwork, accelerating wear and eventual failure costing ₹25,000 or more.
• Routine preventive care on high-mileage commercial vehicles — trucks, buses and SUVs covering long highway routes build up crystals faster; preventive DEF additive treatment costs a fraction of SCR repairs.

Key Benefits

• Crystal Dissolution: Breaks down biuret and cyanuric acid deposits that DEF alone cannot dissolve, restoring full flow through injectors and pump lines.
• Limp Mode Prevention: Clears the root crystallisation cause behind most SCR fault codes, helping your ECU return to normal operation without a workshop visit.
• All-Season DEF Conditioning: Stabilises AdBlue concentration in temperatures ranging from below-zero North India winters to 45°C Rajasthan summers for reliable atomisation year-round.
• Catalyst-Safe Ash-Free Formula: Contains zero ash-forming compounds — your SCR catalyst and DPF remain fully protected and PUC-compliant.
• Cost Avoidance: SCR component replacement on BS-VI trucks and SUVs runs ₹25,000–₹1,50,000; regular DEF additive treatment is the best low-cost insurance available.

The Technology Inside

Rislone DEF Clean uses a concentrated blend of ash-free urea-compatible surfactants and chelating agents that penetrate and break apart urea crystal structures — specifically the biuret and cyanuric acid polymers that form when AdBlue overheats, freezes, or ages in the tank. Once dissolved, the formula conditions the remaining DEF solution to maintain correct ISO 22241 urea concentration, which is critical for accurate NOx dosing and SCR catalyst efficiency. Unlike workshop ultrasonic cleaning, this additive works passively as your vehicle operates, reaching injector tips and pump chambers that no external cleaning tool can access. The entirely ash-free composition means no harmful residues reach the diesel particulate filter downstream, keeping your BS-VI DPF clean and your exhaust emissions within NGT-compliant limits.

Dosage & Coverage

Dose at 1 oz (approximately 30 ml) per 10 gallons (38 litres) of DEF as shown on the bottle label chart. Add the measured amount directly into the DEF/AdBlue filler — the blue-capped tank — never into the diesel fuel tank or engine oil. Double the dose when heavy crystallisation or an active SCR fault code is already present; for routine prevention, treat every second or third DEF top-up.

Compatibility

Safe to use with

• All BS-VI (Euro 6) diesel vehicles fitted with SCR after-treatment and ISO 22241-compliant AdBlue systems.
• Heavy commercial vehicles — Tata Prima, Ashok Leyland, BharatBenz, Eicher Pro series trucks and buses.
• Passenger SUVs and MUVs — Mahindra Scorpio-N, TUV300+, XUV700 diesel and similar BS-VI platforms.
• Light commercial vehicles and pick-ups with SCR-equipped BS-VI engines.

Not suitable for

• Do not add to the diesel fuel tank, engine oil, or coolant — DEF/AdBlue tank only.
• Cannot repair physical SCR catalyst damage, failed NOx sensors, or a seized DEF pump — mechanical faults require workshop repair.
• Not for use in pre-BS-VI (BS4 or older) vehicles that do not have an AdBlue/DEF system.

Why It Matters in India

Indian BS-VI commercial vehicles operating on long hot highway corridors — Mumbai–Pune, Delhi–Jaipur, Chennai–Bengaluru — experience rapid AdBlue evaporation and crystal formation that far exceeds what European vehicles encounter. Add the sub-3°C winters in Delhi, Chandigarh and Amritsar, where DEF can partially freeze and destabilise urea concentration, and the crystallisation risk is compounded across seasons. Vehicles that fail SCR checks are flagged during PUC emission tests and risk NGT-related fines and route restrictions increasingly enforced in NCR and Maharashtra. Treating your DEF system with this AdBlue cleaning additive is the single most cost-effective maintenance step for any BS-VI fleet operator or owner in India.

How To Use

1. Check your DEF tank size and find the correct dose on the bottle label chart.
2. Pour the measured amount directly into the blue-capped DEF/AdBlue filler only.
3. Use a double dose if heavy crystallisation or an active SCR warning light is already present.
4. Drive normally — no warm-up procedure needed; the product works during regular operation.

Safety Note: This product is for the DEF/AdBlue tank only. Keep away from children. In case of skin or eye contact, rinse thoroughly with water.

Frequently Asked Questions

Can Rislone DEF Clean clear existing SCR fault codes?

If the fault code is caused by DEF crystallisation blocking flow or contaminating concentration sensor readings, dissolving the crystals often clears the code after a drive cycle or two. Fault codes originating from catalyst physical damage, a failed NOx sensor, or a seized pump require mechanical repair that no additive can replace.

How often should I add DEF additive to prevent crystal build-up?

For preventive maintenance, add with every second or third DEF top-up under normal conditions. If your vehicle operates in extreme heat above 40°C or cold below 3°C — common across Rajasthan, Punjab and Himachal Pradesh — treat every DEF fill for best protection.

Is this product safe for my Tata or Ashok Leyland BS-VI truck's SCR system?

Yes — the ash-free formula is compatible with all ISO 22241-compliant AdBlue systems, including those fitted to Tata Prima, Ashok Leyland heavy trucks, Mahindra BS-VI SUVs and BharatBenz commercial vehicles. It will not harm SCR catalysts, DPF filters, or urea injector components.

Will this help my vehicle pass the PUC emission test?

A blocked or poorly functioning SCR system increases NOx output, which can contribute to PUC and emission test failures. By restoring correct DEF flow and atomisation, this adblue cleaning treatment helps your SCR catalyst operate at its designed efficiency, supporting lower tailpipe emissions.

Is Cash on Delivery available and how fast will it be delivered?

Yes — naredi.in offers Cash on Delivery across India with free delivery on all orders. Most orders are dispatched within 24–48 hours and delivered within 3–7 business days depending on your location.

Complete Your Kit

Pair Rislone DEF Clean with these complementary treatments for complete BS-VI diesel system 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 your DEF system cleaner 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