Universal Oil Stop Leak

Product Code: 80038

TecLub Universal Stop Leak is a synthetic additive designed to stop leaks in ATF’s, power steering fluid, engine oils, gear oils and hydraulic installations. The additive’s technology softens and expands old seals to recover to “new” seal performance. Oil leakage caused by hardened, dried out brittle seals can be solved and prevented. TecLub Seal Swell Additive targets valve stem seals, crankshaft seals, dust seals, oil filter O-rings and oil pan seals and all other plastic or rubber based seals.


  • All round additive, works in engine & gear oil, ATF, power steering fluid and hydraulic oils
  • Stops and prevents oil leakages through seals
  • Reduces oil consumption
  • Makes seals swell back to original size and regain all-new pliability
  • Eliminates the need for expensive repairs
  • Prolongs the service life of the engine
  • Improves engine performance by enhancing motor compression
  • Prevents or reduces emission of blue exhaust smoke
  • Reduces engine noise
  • Reduces emission of hazardous exhaust gases
  • Does not contain harmful solvents or solids


TecLub Universal Stop Leak can be used in all oils to stop leakage. Does not clog filters and is not harmful for catalytic converters.


Add the contents of one bottle to the oil. Make sure the oil contents do not exceed the maximum oil level.


Recommended dosing is 1%.

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About us

Technical Lubricants International B.V. Technical Lubricants International B.V. (TecLub) is a leading ISO 9001:2015 certified private label producer of lubricating oils, greases, brake fluids, coolants, fuel, radiator and motor oil additives and a full range of automotive specialty products.


Molenwerf 56
1911 DB Uitgeest
The Netherlands

Tel.: +31 (0)251 228 957
Fax: +31 (0)251 213 061