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Rislone
Rislone Liquid Aluminum Stop Leak (41186) 500ml | Radiator Cooling System Leak Repair for India
Liquid aluminum formula for radiator and cooling system leaks. Seals pinhole and small cracks.
volume
500ml
application
Cooling system / radiator
compatible
Aluminium and plastic radiators
₹2,900
+ 18% GST
Total incl. GST: ₹3,422
Free shipping across India
14-day returns
Authorized Distributor
Official dealer since 2014
100% Genuine
Sourced directly from Rislone
Replacement Warranty
Defective unit replaced, not repaired
Direct Support
About This Product
Why the Rislone Liquid Aluminum Stop?
Modern radiators are aluminium with plastic end tanks — very different from the older copper-brass radiators that traditional radiator stop-leaks were designed for. The Liquid Aluminum formula is specifically designed for aluminium radiators. The liquid aluminium particles in the formula circulate with the coolant and deposit at the leak point, creating a metallic seal that is far more durable than the sodium silicate powders in older stop-leaks.
How It Works
The 3-step process explained
1
Circulation
Liquid aluminium particles mix with the coolant and circulate through the system.
2
Leak Detection
Particles migrate to the leak point where coolant pressure is pushing them out.
3
Metallic Seal
Aluminium particles accumulate and bond at the leak, creating a solid metallic seal — more permanent than soft stop-leaks.
How To Use
Step-by-step instructions
Allow engine to cool completely before adding.
Pour the 500ml bottle into the radiator or coolant reservoir.
Run engine to operating temperature and check for leak reduction.
For a heater core leak (damp carpet or foggy windscreen): turn heater to maximum hot to circulate through the heater core.
Do not use if the coolant system is severely contaminated — flush first.
Compatibility
Works with these vehicles
Compatible vehicles — common examples. If your vehicle is not listed, ask Arjun below — it almost certainly still works.
All aluminium radiators
Liquid aluminium sealing
Coolant
Coolant system pin-hole leaks
Radiator, heater core
Coolant
Slow coolant loss without visible drip
Internal seeping
Coolant
Don't see your vehicle? Ask Arjun — tell him your make, model and year for a direct answer.
Not suitable for: Major coolant leaks or burst hoses. Copper-core radiators — use Radiator Stop Leak instead.
How It Compares
vs other options
vs Radiator Stop Leak Concentrate (41196): The 41196 is a smaller concentrate for minor leaks. The Liquid Aluminum at 500ml with metallic particles creates a more durable seal and is better for moderate leaks. For a very slow seep, the 41196 is sufficient.
FAQ
Common questions
Are Rislone additives safe for Indian vehicles?
Yes. Rislone is an American brand formulating automotive additives since 1921. Their products are designed to be compatible with all modern engine oils, coolants, and transmission fluids. They are sold in over 70 countries and are safe for Indian petrol and diesel engines.
Can I use a stop leak additive as a permanent fix?
Stop leak additives condition rubber seals to swell slightly and re-seat. They work on slow seeps and minor leaks and the effect can last 30,000-50,000km. They are not a replacement for a mechanical repair on a major leak — but for minor seeps, they are a legitimate and commonly used solution.
Will fuel additives void my car's warranty?
No — adding a fuel system cleaner to the tank is no different from using a different petrol pump. Indian car manufacturers do not prohibit fuel additives. If a dealer ever claims this, ask for the specific clause in the warranty document.
How often should I use a fuel system cleaner?
Once every 10,000-15,000km or approximately once a year for normal use. If you use a specific station known for poor quality fuel, every 5,000km is reasonable. The cost is ₹900-2,400 and it takes 30 seconds to add to the tank.
Is naredi.in an authorized dealer?
Yes. naredi.in is the authorized distributor in India for CTEK, Rislone, OzCharge, Autool and Foxwell. Products are sourced directly from the brands — not grey market imports. Warranty is handled by naredi.in directly in India.
What is the return policy?
14-day returns from the date of delivery, hassle-free. Contact naredi.in via WhatsApp at +91 93112 11157 to initiate a return.
How long does shipping take?
Free shipping across India. Metro cities typically 2-3 days, other cities 3-5 days. Tracking is provided once dispatched.
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Ask Arjun
Not sure if this is right for your vehicle?
Tell Arjun your vehicle and situation — he'll give you a straight answer, not generic advice.
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