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 inside radiator tubes makes overheating inevitable — this fast radiator flush clears blockages quickly.
• Drained coolant looks brown or smells burnt: Rust and deposit contamination have taken hold. Use this cooling cleaner 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 coolants creates gel-like deposits. Flush the system first for a clean, safe refill.
• Preparing the car before summer or a long highway drive: Preventive use before April heat or a Rajasthan road trip gives your cooling system a clean start.

Key Benefits

• Overheating Protection: Restores full heat-transfer capacity in radiators blocked by scale — critical when ambient temperatures exceed 45°C across north and central India.
• Removes Scale and Rust Deposits: Dissolves calcium deposits caused by Indian hard water and iron rust from ageing engine water jackets in a single treatment.
• BS6-Safe Chemistry: Non-acidic, non-abrasive liquid is safe for the aluminium radiators and plastic reservoir tanks standard in modern Maruti Suzuki, Hyundai, Tata and Honda vehicles.
• Universal Coolant Compatibility: Works alongside all OAT, HOAT and IAT coolant formulations — no need to match coolant colour before use.
• 10-Minute Turnaround: One bottle, one idle cycle, zero workshop downtime — ideal for the high-mileage Indian vehicle fleet where time and money both matter.

The Technology Inside

Rislone's radiator flush uses a blend of surfactants and chelating agents that break the ionic bonds holding calcium carbonate scale and iron oxide deposits to metal and plastic surfaces. Unlike acidic cleaners that can pit aluminium components, this non-acidic formula lifts deposits chemically and holds them in suspension so they drain out with the old coolant. Wetting agents reduce surface tension inside narrow radiator tubes, improving coolant flow and heat exchange efficiency immediately. The result is a cleaner cooling circuit that responds faster to the thermostat — reducing the risk of thermal runaway during prolonged idling in Indian city traffic.

Dosage & Coverage

One 355ml bottle treats a standard passenger car cooling system of 4–6 litres — covering most Indian hatchbacks, sedans and compact SUVs. Add the entire bottle to a warm (not hot) radiator or reservoir, run the engine for 10 minutes at idle, then drain and refill with fresh coolant and distilled water. Use once per coolant change interval or whenever you notice signs of contamination.

Compatibility

Safe to use with

• All coolant colours and types — green (IAT), pink, blue and orange (OAT/HOAT) formulations
• Aluminium, copper, brass and plastic radiators and engine water jackets
• All petrol, diesel and mild-hybrid passenger vehicles including BS6-compliant models
• Maruti Suzuki, Hyundai, Tata, Honda, Mahindra, Toyota and Kia cooling systems

Not suitable for

• Does not fix overheating caused by a faulty thermostat, failed water pump or blown head gasket
• Not a coolant replacement — always refill with fresh coolant after flushing
• Not intended for two-wheeler or heavy commercial vehicle cooling systems without confirming system volume

Why It Matters in India

Radiator blockage is one of the top causes of roadside breakdowns in India between April and June, when ambient temperatures in Rajasthan, UP and Vidarbha regularly cross 48°C. Indian tap water — widely used to top up radiators — carries dissolved minerals that form insulating scale layers, forcing the engine to run hotter with every passing month. Monsoon temperature swings from 45°C to 28°C in hours stress cooling system seals and accelerate sludge formation. Addressing scale and contamination with a proper radiator flush India routine every service interval is inexpensive insurance against a costly engine overhaul.

How To Use

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

Safety Note: Never open a radiator cap on a hot engine — scalding coolant under pressure can cause serious burns. Dispose of drained coolant responsibly; do not pour into drains or open ground.

Frequently Asked Questions

Is this safe for my BS6 Maruti Swift or Hyundai Creta?

Yes. The non-acidic formula is specifically safe for the aluminium radiators and plastic coolant reservoirs used in all modern BS6 passenger cars sold in India, including Maruti Suzuki, Hyundai, Tata and Honda models. It will not damage rubber hoses or sensor housings.

Can I use this with any coolant colour already in my system?

Yes — Rislone cooling products are compatible with all standard IAT, OAT and HOAT coolant formulations regardless of colour. There is no need to drain the system before adding the flush; simply add, run and drain together.

Will hard Indian tap water cause problems after I flush and refill?

Always top up or refill with distilled or demineralised water, not tap water, to prevent calcium scale from returning. Distilled water is inexpensive and widely available at pharmacies and supermarkets across India; it makes a significant long-term difference to cooling system health.

How often should I use a radiator flush in Indian conditions?

Once per coolant change interval — typically every 40,000–60,000 km or every two years — is sufficient for most vehicles. If your car has been regularly topped up with tap water or the coolant looks brown, flush immediately regardless of mileage.

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

Yes, naredi.in offers Cash on Delivery across India with free shipping on all orders. Most metro cities receive delivery within 2–4 business days; smaller towns and tier-2 cities typically within 4–7 business days.

Complete Your Kit

For full cooling system protection in Indian conditions, pair this flush with these Rislone products.

• Rislone Radiator 10 Minute Flush (41211): The dedicated fast-flush formula in this listing — use before every coolant change to ensure a completely clean system for maximum heat transfer.
• Rislone Hy-Per Cool Super Coolant (41300): Add to your fresh coolant after flushing to reduce operating temperature by up to 15°C — a genuine advantage during peak Indian summer and highway driving.

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