Gearbox Stop Leak

An additive to revitalise old gearbox oil seals and to prevent annoying oil leaks due to seal wear and ageing.

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Features & Benefits

  • Revitalises old gearbox oil seals - stops and prevents most oil leaks caused by general seal wear, reduces oil consumption
  • Effective on many seal & gasket materials, such as rubber, neoprene, EPDM, viton etc. and compatible with all gearbox oils for manual gearboxesn in petrol and diesel powered cars - universal applications, reduces inventory
  • Contains gearbox oil anti-wear, detergent and dispersant nadditives - does not compromise existing gearbox oil performance, maintains oil viscosity
  • No dismantling - saves time and money


One 250 ml bottle of KENT Gearbox Stop Leak will treat engines with a gearbox capacity of up to 4 litres of gearbox oil. Add a full bottle via the gearbox filler plug, or as recommended in the owner’s handbook.
Pay attention not to exceed manufacturers specified maximum oil level. May take several hundred kilometres to take full effect. A minimum gearbox oil level of 2 litres is required for the application of one full bottle of Gearbox Stop Leak.
Will not prevent oil leaks caused by damaged components. KENT Gearbox Stop Leak is not a replacement for good vehicle maintenance. Gearbox oil level should always be at least at the minimum recommended by the manufacturer. Not suitable for use in automatic gearboxes.
At ambient temperatures below 15° C the product becomes opaque. On warming to above 15 °C the product becomes clear once again. This phenomenon does not affect the product stability or performance.


250 ml Brown 86523 SDS TDS

Virucide complies with EN14476

Surface Clean & Disinfect
not only cleans and disinfects,
it also acts against enveloped viruses.

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