Regular price
Sale price
Regular price
Sold out
Unit price
Tax included.

  • Repairs
  • Stops leaks
  • Stops & Seals Motor Oil Leaks
  • Restores Gaskets & Seals
  • Works with All Types of Motor Oil
  • Use in Petrol & Diesel Engines

Engine components tend to wear down over time, and this can result in oil leaks. Rislone Engine Oil Stop Leak Concentrate is specially designed to stop seal and gasket leaks caused by normal engine wear and age. It not only stops leaks but prevents them as well by conditioning and restoring gaskets and seals.

Works with ALL petrol and diesel engines using conventional, high kilometre and synthetic engine oil.

  • Stops & Seals Motor Oil Leaks
  • Restores Gaskets & Seals to Stop & Prevent Engine Oil Leaks


Dosage & Directions

Add entire bottle of stop leak to engine oil at or between oil changes. Do not overfill. Leaks usually stop in 300 km or 3 days of driving. If leak continues, a second application may be required or mechanical attention is needed.


1 bottle treats up to 5 litres of oil. For larger systems use 1 bottle for every 5 litres of oil capacity. On small 4 cycle engines, use approximately 65 ml per litre of capacity.


Rislone® Engine Treatment Concentrate is compatible with all petroleum-based motor oils including conventional, high kilometres and synthetic formulas.

Use in ALL 4, 6 and 8 cylinder vehicles, with petrol, LPG, Diesel, turbo or racing engines.

Works in motorbikes/vehicles with a wet clutch system, however dosage is 93mL per 1L of oil.

Rislone Engine Oil Stop Leak Concentrate is compatible with Rislone Engine Treatment, Rislone Compression Repair, Rislone Valve Seal Oil Consumption Repair, Rislone Oil Treatment and Rislone Engine Repair. Note: If you are unsure what other additives could be in the oil system prior to adding Rislone, it is recommended to flush the system first.


Data Sheets

TDS Sheet

MSDS Sheet



Will Rislone Engine Oil Stop Leak clog my oil filter?

No. Unlike our cooling system product, Rislone Engine Oil Stop Leak has no particles to plug the leak, it works chemically to stop leaks in gaskets and seals.

Will Rislone Engine Oil Stop Leak work in synthetic oil?

Yes, Rislone is one of the only engine oil stop leaks that is compatible with all petroleum based oils, including synthetics.

How does Rislone Engine Oil Stop Leak work?

After time, engine oil seals tend to dry out and shrink. Rislone revitalizes these seals and makes them soft and pliable again.

How much Rislone Engine Oil stop leak do I install?

Our 44209 (325mL) is designed for one bottle to be installed in a standard passenger car or light truck. For larger systems, use 1 bottle for every 6 litres of oil capacity. Do not overfill.

If first application does not completely stop leak, may I add another bottle?

Yes, you can install a second application for hard to stop leaks. If your leak still persists after a second application, then mechanical attention may be required.

If I install more than the required amount, will it work faster or better? 

No, we have formulated our product to work best at the suggested dosage amount.

How long does it take to start working?

Rislone Engine Oil Stop Leak starts working the minute you install and start driving the vehicle. You will usually see results in about 300km or three (3) days of driving.