Top 6 Oil Leak Stopper UK – Engine Oil Additives

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1. Lucas Oil

946 ml, Lucas Oil 10278 Engine Stop Leak

Lucas Oil - Contains nothing that could be harmful to an engine. Less engine noise. Extends the life of engine oil by at least 50%.
BrandLucas Oil
ManufacturerLucas Oil Products Inc
Height8.38 cm (3.3 Inches)
Length30.48 cm (12 Inches)
Width8.38 cm (3.3 Inches)
Part Number10278
WarrantyNo Warranty

2. STP

Black, STP GST63300EN Engine Oil Additive

STP - Contains no solids to clog filters or inhibit flow. Helps stop minor oil leaks. Is compatible with regular and synthetic motor oils. Conditions engine seals. Proudly made in the UK.
Part NumberGST63300EN


NO LEAK 20401 3676

NO LEAK - Stops smoke and repairs rear main seals. Stops and prevents engine oil leaks caused by dried, shrunken, or harden seals. Recommended for rear main seal repair. Safe & compatible with ALL engine oils.
ManufacturerGold Eagle
Height22.56 cm (8.88 Inches)
Length21.44 cm (8.44 Inches)
Width14.12 cm (5.56 Inches)
Part Number20401

4. Liqui Moly

Liqui Moly P000002 3676

Liqui Moly - After adding, run the engine until warm. Reduces engine noise and oil consumption through piston rings and valve guides. One 300 ml can of oil leak stop is sufficient up to 5 liters of motor oil. For all gasoline and diesel engines. Counteracts oil dilution. Compatible with all commercially available motor oils. Not suitable for use in motorcycles with wet clutches! Regenerates rubber and plastic engine seals such as shaft seals and valve stem seals and prevents oil stains under the vehicle. The product can be added at any time. Sealing first takes effect after about 600 - 800 km.
BrandLiqui Moly
ManufacturerLIQUI MOLY GmbH
Height6 cm (2.36 Inches)
Length12 cm (4.72 Inches)
Width6 cm (2.36 Inches)
Part NumberP000002

5. STP

STPĀ® 63300EN Engine Stop Leak 300ml

STP - Stp engine stop leak is formulated with a special agent to renew polymer seals and gaskets damaged by the heat of normal engine operation, and rejuvenates seals and gaskets. Will not harm oxygen sensors or catalytic converters.

Stp engine stop leak is specially formulated to help stop minor oil leaks using a special agent to rejuvenate shrunken, which can otherwise result in oil leaks and expensive mechanical work. Helps stop minor oil leaks, dried-out polymeric seals and gaskets. Engine stop leak for Petrol and Diesel Engines is compatible with regular and synthetic motor oils. It will also help to fortify oil with extra protection additives and a viscosity index improver. Contains no solids to clog filters or inhibit flow. Over time, normal engine operation and heat can cause polymer oil seals and gaskets to shrink, dry-out and crack resulting in minor oil leaks.
Part Number63300EN

6. Rislone

500ml, RISLONE Rear Main Seal Repair

Rislone - Stops all oil leaks seals rear main, cam seal and Timing Cover Leaks Restores Shrunk and Hardened Seals Use in Petrol & Diesel Engines.
Part Numberrsl1