Rislone Radiator 10-Minute Flush 355ml

Use When You Notice…

• Temperature gauge creeping up in traffic: Delhi, Mumbai and Bengaluru jams force engines to idle 20–30 minutes. Scale-lined radiator tubes make overheating inevitable — this flush clears blockages fast.
• Drained coolant looks brown or smells burnt: Rust and deposit contamination have taken hold. Flush before fresh coolant goes in to remove built-up sludge completely.
• System topped up with tap water for years: Hard Indian tap water deposits calcium scale that silently reduces heat transfer — a quick flush clears it before visible damage appears.
• Switching coolant colour or brand: Mixing incompatible formulations causes gel deposits. A thorough flush neutralises residues so your new coolant works as designed.
• Pre-summer or pre-highway service: Before April or a long drive on NH44 or NH8, flush the system to ensure your radiator operates at full capacity in peak heat.

Key Benefits

• Rapid 10-minute action: Works during a single idle cycle — no overnight soaking or specialist workshop equipment required.
• Removes scale and rust from Indian hard water: Dissolves calcium and mineral deposits that tap-water top-ups leave behind, restoring full heat-exchange efficiency.
• Best radiator flush for sludge removal: Lifts oil contamination and oxidised coolant residue that accumulate in high-mileage Indian vehicles.
• Safe for modern BS6 engine components: Non-acidic formula protects aluminium water jackets, plastic tanks and rubber hoses found in current Maruti Suzuki, Hyundai, Tata and Honda models.
• Prevents radiator blockage in city traffic: Clean coolant passages mean consistent coolant flow even when the engine idles through long monsoon-season gridlock.

The Technology Inside

Rislone Radiator 10-Minute Flush uses a surfactant-based detergent system that penetrates and emulsifies rust, calcium scale and oxidised coolant deposits without attacking metal or polymer surfaces. Unlike acidic flushes, its pH-balanced chemistry leaves a conditioning film on aluminium and copper surfaces that supports subsequent corrosion inhibitor adhesion from fresh coolant. The chelating agents in the formula bind to mineral ions — the primary culprits in Indian hard-water scale — carrying them into suspension so they drain away cleanly. This two-in-one cleaning and conditioning action means your new coolant charges into a genuinely clean system, delivering rated heat-transfer performance from the very first heat cycle.

Dosage & Coverage

One 355 ml bottle treats a standard passenger-car cooling system of 4–6 litres — covering most Indian hatchbacks, sedans and compact SUVs. Add to the coolant reservoir or radiator (engine cold, cap on maximum), run at idle for 10 minutes, then drain and refill with fresh coolant and distilled water. Repeat at every coolant change or every 40,000 km for best results in Indian conditions.

Compatibility

Safe to use with

• All coolant colours — green, blue, pink and orange OAT/HOAT formulations
• Aluminium, copper, brass and plastic radiators and engine water jackets
• Rubber and silicone coolant hoses and gaskets
• Compatible with Maruti Suzuki, Hyundai, Tata, Honda, Mahindra and Kia cooling systems
• BS4 and BS6 petrol and diesel engines

Not suitable for

• Does not fix overheating caused by a faulty thermostat, failed water pump or blown head gasket
• Not a permanent radiator sealant — for active leaks use a dedicated stop-leak product
• Do not use in sealed, pressurised systems without a drain point

Why It Matters in India

Radiator and cooling system failures are among the top causes of roadside breakdowns on Indian highways, particularly across Rajasthan, Madhya Pradesh and the Gangetic plain during April–June when ambient temperatures regularly touch 48°C. Most Indian vehicles are also maintained on municipal tap water, which carries dissolved minerals that steadily coat radiator passages — reducing cooling efficiency long before the temperature gauge shows a warning. Monsoon temperature swings from 28°C at night to 40°C midday stress hoses and seals, making a clean, inhibitor-rich coolant circuit essential year-round. A 10-minute flush every service interval is the lowest-cost insurance available for Indian engine longevity.

How To Use

1. Ensure the engine is completely cool before removing the radiator or reservoir cap.
2. Pour the full 355 ml bottle into the coolant reservoir or radiator neck.
3. Start the engine and let it idle for 10 minutes with the heater set to maximum.
4. Switch off, allow to cool, drain fully, then refill with fresh coolant and distilled water.

Safety note: Never open a hot radiator cap — scalding coolant can spray under pressure. Dispose of drained coolant responsibly; do not pour into drains or soil.

Frequently Asked Questions

Can I use this with any coolant colour in my car?

Yes — Rislone Radiator Flush is compatible with all standard coolant formulations including green, blue, pink and orange types used by Indian OEMs. It does not react with or degrade any of these chemistries, so your next fill of fresh coolant works exactly as intended.

Is it safe for BS6 vehicles with aluminium radiators?

Absolutely. The non-acidic formula is specifically designed to protect aluminium water jackets and plastic reservoir tanks common in BS6-compliant engines from Maruti Suzuki, Hyundai and Tata. It will not pit, corrode or weaken any OEM-approved cooling-system material.

Will hard Indian tap water cause problems after using this product?

The flush removes existing mineral scale, but always refill with distilled or demineralised water to prevent new scale from forming. Using tap water after flushing will simply restart the scale-deposit cycle and reduce the benefit of the flush over time.

How often should I use Rislone Radiator Flush in Indian conditions?

Use at every coolant change — typically every 40,000 km or two years, whichever comes first. If your vehicle operates daily in heavy city traffic or regularly sees summer temperatures above 40°C, an annual flush is a worthwhile precaution.

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

Yes — naredi.in offers COD across India with free delivery on all orders. Most metro and tier-1 city orders arrive within 3–5 business days; tier-2 and tier-3 locations may take up to 7 business days.

Complete Your Kit

Pair your Radiator Flush with these Rislone products for a complete cooling-system service.

• Rislone Radiator 10-Minute Flush (41211): The product on this page — your essential first step before any coolant change, ensuring a spotlessly clean system for maximum heat-transfer efficiency.
• Rislone Hy-Per Cool Super Coolant (41300): Add after flushing to lower operating temperatures by up to 15°C — ideal for Indian summers and the best cooling system cleaner companion for long highway runs.

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