Rislone Rear Main Seal Repair

Use When You Notice…

• Oil spots under your parked car: A classic sign that rear main or timing cover seals have shrunk — this product chemically restores them without dismantling the engine.
• Oil level dropping between services: If you are topping up more than once between oil changes, worn seals are likely the cause; one treatment can slow or stop that loss.
• Ticking or tappet noise in an older engine: Low oil film from slow leaks starves valve train components — restoring seals helps maintain proper oil pressure and quieter operation.
• A recently purchased second-hand vehicle with unknown history: India's large used-car market means many engines carry hardened seals; this product rejuvenates aging engines without costly workshop repairs.
• Engine running rough after a hot summer season: Sustained 45°C+ ambient heat accelerates seal degradation — an ideal preventive or corrective treatment after peak summer months.

Key Benefits

• Seal Reconditioning: Chemically restores dried and shrunken rear main seals, timing cover seals, and valve cover gaskets — one product, multiple seals treated simultaneously.
• Heat Resistance: Formula remains stable above 45°C ambient temperature, making it reliable through Delhi, Nagpur, and Rajasthan summers where conventional sealants soften or fail.
• Sludge Reduction: Cleans varnish and sludge deposits that restrict oil flow in high-mileage engines common across India's ageing vehicle fleet.
• Cost Saving: Stops ongoing oil loss, cutting monthly top-up expenses and deferring expensive rear main seal replacement labour costs at the workshop.
• Extends Engine Life in Indian Conditions: Extends engine life in Indian driving conditions — heat, dust, and stop-go city traffic — by maintaining a protective oil film across all seal contact surfaces.

The Technology Inside

Rislone Rear Main Seal Repair uses a proprietary blend of seal-swelling esters and elastomer conditioners that penetrate the molecular structure of nitrile and rubber seals, restoring their original pliability and compression set. Unlike a liquid filler that simply plugs a gap temporarily, this chemistry causes the seal material itself to expand back toward its manufactured dimensions — a durable repair that moves with the engine. The formula also contains viscosity stabilisers that counteract the oil thinning caused by India's high ambient temperatures and long idling periods in city traffic. Trusted by Indian mechanics and workshops for multi-seal coverage in a single 500ml dose, it addresses rear main seals, timing covers, and O-rings in one treatment. The result is a restored oil film, reduced blow-by, and measurably lower oil consumption over subsequent service intervals.

Dosage & Coverage

Add the full 500ml bottle through the engine oil filler cap. Check the dipstick after adding to confirm total oil level remains within the safe operating range — do not overfill. Drive normally for up to 800 kilometres; for severe leaks, a second application after the first treatment interval is recommended.

Compatibility

Safe to use with

• All petrol and diesel engines — including BS6-compliant engines in current Maruti, Hyundai, Tata, Mahindra, and Honda vehicles.
• Mineral, semi-synthetic, and full-synthetic engine oils in grades 5W-30, 10W-40, 15W-40, and 20W-50.
• CNG and LPG bi-fuel conversions, where accelerated valve and seal wear makes this treatment especially beneficial.
• Turbo-diesel engines commonly used in Indian commercial vehicles and SUVs.

Not suitable for

• Not a replacement for engine oil — always use alongside your regular engine oil, never instead of it.
• Cannot repair mechanically damaged or physically cracked seals — those require workshop replacement.
• Do not use in engines where the manufacturer explicitly forbids oil additives under an active factory warranty.

Why It Matters in India

India's ageing car fleet, shared taxi and auto-rickshaw market, and common practice of extended oil-change intervals means millions of engines are running with degraded seals and accumulated sludge. Potholes and speed breakers every few hundred metres create constant vibration stress on gaskets and O-rings, while dust levels in Indian cities infiltrate through air filters and accelerate internal wear. Rislone Rear Main Seal Repair offers an affordable, PUC-friendly path to sealing worn oil gaskets and O-rings common in high-mileage Indian vehicles — without the cost or downtime of a full engine teardown.

How To Use

1. Warm the engine for 5 minutes, then switch off and allow 2 minutes for oil to settle.
2. Pour the full 500ml bottle into the engine oil filler cap opening.
3. Replace the cap, start the engine, and drive normally for up to 800 kilometres.
4. Check the oil level on the dipstick after adding and again at 400 km to confirm it remains in the safe range.

Safety Note: Do not exceed the maximum oil level marked on the dipstick. Dispose of the empty bottle responsibly in accordance with local municipal waste guidelines.

Frequently Asked Questions

Is this safe to use in my BS6 petrol or diesel engine?

Yes. Rislone Rear Main Seal Repair is formulated to be compatible with modern BS6-compliant engines and their emissions systems. It does not affect catalytic converter function or DPF performance when used as directed.

How long does it take to see results?

Most drivers notice reduced oil spotting and improved oil retention within 300–500 km of treatment. Full seal reconditioning and maximum leak reduction develop over one complete oil-change interval as the elastomer conditioners fully penetrate the seal material.

Can I use this in my CNG or LPG converted vehicle?

Yes — CNG and LPG conversions often accelerate valve stem seal and O-ring wear due to the drier combustion environment. Rislone's seal conditioners are well-suited to these applications and help compensate for the additional wear these fuels impose.

Will this affect my PUC (Pollution Under Control) test result?

Rislone Rear Main Seal Repair is designed to reduce oil consumption and blow-by, which can actually improve exhaust smoke levels in older engines. It does not add harmful compounds to the combustion process and should not negatively affect PUC readings.

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

Yes, COD is available across India on naredi.in. Orders are dispatched promptly and typically reach metro cities within 2–4 business days; Tier 2 and Tier 3 locations may take 4–7 business days depending on courier network coverage.

Complete Your Kit

For complete engine protection in Indian driving conditions, pair this rear main seal treatment with these trusted Rislone products:

• Rislone Engine Treatment Conditioner and Cleaner (44102): Clears sludge and varnish from oil passages while conditioning the full engine — ideal to use at the same oil change for a comprehensive internal clean and protect treatment.
• Rislone One Seal Stop Leak (44334): A concentrated liquid seal stop-leak that addresses multiple leak points simultaneously — recommended when leaks are present at more than one location across the engine gasket and O-ring system.

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