10 Best Oil Additives To Stop Leaks

Updated February 2026

Top Choice

1.

ATP AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle

9.9

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2.

Lucas 10008 Power Steering Stop Leak - 12 oz

9.4

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3.

Lucas Oil 10278 Engine Oil, 1. quarts

9.2

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lowest price

4.

Bar's Leaks 1040 Grey Pack of 1 Concentrated Rear Main Seal Repair-16.9 oz

8.9

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5.

Lucas Oil 10279 Stop Leak, 1. gallons

8.6

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6.

Permatex 82099 Spray Sealant, 9 oz

8.2

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7.

Liqui Moly 2020 Motor Oil Saver - 300 ml

8.2

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8.

Lucas Oil 10011 Power Steering Stop Leak, 1. quarts

7.7

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9.

Bardahl 3119 Gear Oil Additive Plus Stop Leak - 8 oz

7.5

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10.

Bar's Leaks Engine Repair - 16 oz

7.2

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