10 bestTransmission Leak Stopperof February 2025
112M consumers helped this year.
1

Lucas Oil 10279 Engine Oil Stop Leak - 1 Gallon
Lucas Oil

9.9
2

Bar's Leaks HDC Radiator Stop Leak Tablet - 60 Grams
Bar's Leaks
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9.8
3

K-SEAL Coolant Leak Repair, ST9501 472ml Multi-Purpose Formula Stops Leaks in the Radiator, Head Gasket, Block, Water Pump Casing, Heater Core, Freeze Plug - Pour and Go - Designed for Canadian Market
K-Seal

9.7
4

STP High Mileage Oil Treatment + Stop Leak - 15 FL OZ
STP

9.6
17% off
5

BlueDevil Power Steering Stop Leak - 8 Ounce (00232)
BlueDevil Products

9.4
OtherUp to 20% off
6

XADO ATOMEX Stop Leak Engine Oil Additive Sealer (Bottle, 250 ml) - Repair Gaskets & Seals Treatment
XADO

9.2
7

Bar's Leaks 1630-6PK Power Steering Stop Leak - 11 oz., (Pack of 6)
Bar's Leaks

9.0
8

Bar's Leaks PLT11 Pelletized Radiator Stop Leak - 11 oz.
Bar's Leaks

8.7
9

Bar's Leaks Axle and Differential Gear Repair, 16.9 Oz
Bar's Leaks

8.5
10

Lucas Oil 10278 Engine Oil Stop Leak - 1 Quart
Lucas Oil

8.3
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