1
Editor's Choice
Atp Automotive AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle
ATP AUTOMOTIVEBrand
AT-205Model
4.0H*7.0L*4.5W inchesDimension
0.11 lbWeight
Ranked #1 in Best Transmission Leak Sealer Of 2024
9.7We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Excellent
Price: $$$
Save 12% + FreeShipping
Visit Store » VerSure ( 4.92 / 5 )
Features
- Professional strength fast acting resealer, stops leaks fast
- Rejuivinates all rubber seals & gaskets in engines, transmissions, power steering, differentials and hydraulic systems
- Compatible with conventional and synthetic oils, ATF, gear oil, power steering fluids and hydraulic oil
- Does not contain petroleum distillates, will not over-swell or breakdown seals
- 8oz bottle will treat a 6 quart capacity, adjust accordingly
2
Editor's Choice
Lucas Oil LUC10278 Engine Oil Stop Leak
LUCAS OILBrand
LUC10278Model
11.75H*3.4L*3.35W inchesDimension
2.03 lbWeight
9.5We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Excellent
Price: $
FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
3
Editor's Choice
Bar'S Leaks OS-1 Seal Engine Oil Burning/Leak Repair
BAR'S LEAKSBrand
OS-1Model
1.1 lbWeight
Ranked #13 in Best Transmission Leak Sealer Of 2024
Ranked #15 in Best Oil Additive For Engine Knock Of 2024
Ranked #15 in Best Oil Additive For Engine Knock Of 2024
9.4We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Excellent
Price: $$
Save 6% + FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
- REPAIRS LEAKING MAIN SEALS AND GASKETS - We have designed this product to work in all gasoline and diesel engines including turbocharged, EcoBoost, hybrid and even racing engines.
- RENEWS WORN VALVE SEALS AND GUIDES - Your vehicle is a good candidate for Bars Leaks Oil Seal Engine Oil Burning & Leak Repair if it does not consume more than one quart of oil per day.
- STOPS OIL BURNING & BLUE EXHAUST SMOKE - This covers 3, 4, 5, 6, 8 and 10 cylinder engines in all cars, trucks, vans and SUVs. Our product can also be used in heavy-duty applications referencing the appropriate dosage level.
- SEAL ALL OTHER OIL LEAKS, DRIPS AND CONSUMPTION - This applies to a wide range of other motor applications too - tractors, boats, RVs, motorcycles (including wet clutch), ATVs, lawn equipment.
- MADE IN THE USA
4
Liqui Moly P000002 Lm 1005 Oil Leak Stop 300 Ml
LIQUI MOLYBrand
P000002Model
7.28H*2.13L*2.13W inchesDimension
0.59 lbWeight
9.2We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Excellent
Price: $$
FreeShipping
Visit Store » CANGURO ( 4.84 / 5 )
5
Bar'S Leaks 1010 Engine Oil Stop Leak Concentrate
BAR'S LEAKSBrand
1010Model
6.5H*1.8L*3.0W inchesDimension
0.8 lbWeight
Ranked #20 in Best Oil Additive For Engine Knock Of 2024
9.0We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $
FreeShipping
Visit Store » G.P.S. ( 4.92 / 5 )
Features
- STOPS AND SEALS MOTOR OIL LEAKS - Bar's Leaks Engine Oil Stop Leak Concentrate is specially designed to stop seal and gasket leaks caused by normal engine wear and age.
- RESTORES GASKETS AND SEALS - One bottle treats up to 5 quarts of oil. For larger systems use 1 bottle for every 5 quarts of oil capacity. On small 4 cycle engines, use approximately 2 ounces per quart of capacity.
- PREVENTS ENGINE OIL LEAKS - Add entire bottle of stop leak to engine oil at or between oil changes. Leaks usually stop in 200 miles or 3 days of driving. If leak continues, a second application may be required or mechanical attention is needed.
- WORKS WITH ALL ENGINE OILS - Works with ALL gasoline and diesel engines using conventional, high mileage and synthetic engine oil.
6
Xado XA 44813 Atomex Oil Additive Stop Leak Engine
XADOBrand
XA 44813Model
Ranked #17 in Best Oil Additive For Engine Knock Of 2024
8.9We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $$$
Save 27% + FreeShipping
Visit Store » XADO TECH, LLC ( 4.85 / 5 )
Features
- Elasticity Restorer - Look no further for a solution to restore elasticity ability of rubber gaskets and seals. Say goodbye to leaks and fugas with our formula for complete rejuvenation and protection.
- Leak Prevention - Ideal for stopping engine oil leakages. Engineered for all engines, including auto and motorcycle, our slick liquid formula fixes leaks and rejuvenates seals.
- Cost Saver - It offers complete protection for older and new engines. This multi-purpose aditivo is perfect for stopping leaks, enhancing engine performance, and extending the life of your vehicle.
- Efficiency Enhancer - Reduces engine noise and oil consumption with our advanced formula.The slick liquid fix rejuvenates seals, valves, and cylinders, ensuring smoother operation and reducing wear.
- Universal Compatibility - This multi-purpose sealant works with auto, motorcycle, and marine engines, preventing fugas and leaks while rejuvenating seals, valves, and cylinders.
7
Bluedevil Products 49499 Oil Stop Leak - 8 Ounce
BLUEDEVIL PRODUCTSBrand
49499Model
1.0H*6.0L*3.1W inchesDimension
0.3 lbWeight
8.7We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $$
FreeShipping
Visit Store » BetterBize ( 4.92 / 5 )
Features
- Easy to use - The BlueDevil Oil Stop Leak is designed to be easy to use, simply pour the recommended amount into the leaking components oil slump, or crank case.
- Permanent seal - BlueDevil offers a permanent solution with our Engine Oil Stop Leak that is proven to seal your leak and get you back on the road againch Formulated to stop your seeping or dripping oil leaks permanently and keep your leak sealed even after miles of driving.
- Compatible with all types of engines - Compatible with gasoline and diesel engines, making it a versatile product that can be used on a wide range of vehicles.
- Versatile Uses - Repairs and reconditions rubber seals throughout any fluid oil system. Can be used for pinion seals, gear cases, refillable shock absorbers, gear boxes, axle seals, and gear differentials.
- Safe to use - Designed with a non-clogging formula that wont temporarily swell seals. Does not contain petroleum and is not harmful to your engine
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Bar'S Leaks 1000 High Mileage Engine Repair-It
BAR'S LEAKSBrand
1000Model
1.35H*7.41L*2.85W inchesDimension
1.05 lbWeight
Ranked #2 in Best Oil Additive For Engine Knock Of 2024
8.7We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $$
Save 13% + FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
- RESTORES PERFORMANCE - Contains a combination of the best performance additives to repair the most common oil-related problems
- INCREASES COMPRESSION AND HORSEPOWER - Restores lost compression and power, reduces noise and oil consumption, while improving the performance of worn cylinders, rings, bearings, and seals
- STOPS LEAKS, NOISE, AND SMOKING - For most vehicles, this is your last chance before paying an expensive repair bill or replacing the vehicle
- FRICTION MODIFIERS - Engine Repair can be used to top off the existing oil when low, or add a bottle when changing the oil and filter
- REPAIR-IT - Engine Repair-It can be used to top off existing oil when low or add a bottle when changing oil.
9
Liqui Moly 2020 Motor Oil Saver | 300 Ml | Oil Additive
LIQUI MOLYBrand
2020Model
0.0H*0.0L*0.0W inchesDimension
0.75 lbWeight
Ranked #7 in Best Oil Additive For Engine Knock Of 2024
8.7We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $$
Save 12% + FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
10
Prestone AS275 Stop Leak Additive Engine Oil 12 Oz Bottle
PRESTONEBrand
AS275Model
2.75H*8.0L*2.75W inchesDimension
Ranked #12 in Best Oil Additive For Engine Knock Of 2024
8.7We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $
Save 10% + FreeShipping
Visit Store » BTP Logic ( 4.8 / 5 )
Features
- Rapidly halts leaks by rejuvenating seals that have become hardened or shrunken. Provides extended engine protection, lasting twice as long as traditional oil-based stop leak solutions. Compatible with all types of motor oils, including synthetic, conventional, and high mileage variants.
- Container type - Bottle
- Liquid volume - 12.0 fluid_ounces
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Lucas Oil 11100 Engine Oil Stop Leak Top Off Additive/12X1/Quart
LUCAS OILBrand
11100Model
9.0H*4.35L*2.42W inchesDimension
0.0 lbWeight
Ranked #19 in Best Oil Additive For Engine Knock Of 2024
8.5We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $
FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
12
Bardahl 2117W 2117 Nosmoke + Stopleak Motor Oil Additive
BARDAHLBrand
2117WModel
9.0H*3.0L*2.0W inchesDimension
0.7 lbWeight
Ranked #18 in Best Oil Additive For Engine Knock Of 2024
8.5We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $$
Save 9% + FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
- NO MORE BURNING OIL - Stop your engine from oil burning with the enhanced NoSmoke + StopLeak motor oil additive! Bardahl NoSmoke oil additive gives you top-quality protection and restoration for old engines by "filling in" loose tolerances with an extra-thick formula that reduces oil burning and excessive exhaust smoke. This engine additive stop oil burning solution ensures your vehicle runs cleaner and smoother.
- LEAK SEALER - NoSmoke + StopLeak doesn't just reduce burn; it helps seal empty spaces that develop in engines over the years, acting as an engine oil leak sealer to reduce engine noise and quiet noisy lifters. It even helps restore the reliability of dry, brittle seals to stem further oil leaks. Your car won't just run better; it'll sound better too. Stop the smoke and the noise with this effective stop leak oil additive!
- CONTROL EMISSIONS - As engines loosen, smoke and pollutants released in exhaust can increase over time, so a car that would have once passed emission standards might slip below acceptable levels. NoSmoke oil additive with StopLeak can not only help reduce or eliminate smoke, but it can also cut down on pollutants released in exhaust to help meet emissions standards. This no smoke oil additive is perfect for maintaining cleaner emissions and protecting your engine.
- MAINTAIN AND IMPROVE - Bardahl's NoSmoke + StopLeak is the best motor oil additive for older cars. Not only will it help reduce wear and improve the function of your engine, but it can also restore lost performance and help improve compression over time. Use the best engine oil additive to maintain your car's longevity when you use NoSmoke! This oil additive for car engine treatment is a must-have for any aging vehicle.
- A NAME YOU CAN TRUST - For over 85 years, Bardahl has been based in America, making the best oil additive motor products for car engines. We're a family-owned and operated company, and we pride ourselves on producing the finest products on the marketplace while developing industry-leading innovations in engine additive solutions.
13
Bar'S Leaks 1816 Axle And Differential Gear Repair
BAR'S LEAKSBrand
1816Model
8.8H*3.5L*2.0W inchesDimension
1.06 lbWeight
8.3We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $$
Save 7% + FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
- STOPS PINION, AXLE, OUTPUT SHAFT AND OTHER SEAL LEAKS - This is a treatment additive for use with automotive, heavy duty, agricultural, marine and industrial gear oils.
- ANTI-WEAR AW AGENTS - Superior anti-wear, anti-foam and anti-corrosion protection.
- SEAL CONDITIONER - Extends system life by stopping leaks, reducing noise and improving gear performance.
- PERFORMANCE ADDITIVE BOOSTER - Designed to mix with all synthetic and conventional petroleum GL-4, GL-5, MT-1 gear oil / lube grades including 75W-90, 80W-90, 75W-140, 85W-140 and all others.
- Manufactured in the USA, this product works in all manual gearboxes, differentials, open & posi axles and more. Stops pinion, axle, output shaft and other seal leaks. Reduces grinding, whining, clunking and protects gears.
14
Lucas Oil 10009 Transmission Fix - 24 Ounce
LUCAS OILBrand
10009Model
3.35H*12.0L*3.35W inchesDimension
1.59 lbWeight
Ranked #1 in Best Transmission Additives Of 2024
Ranked #5 in Best Transmission Leak Sealer Of 2024
Ranked #10 in Best Automatic Transmission Fluids Of 2024
Ranked #5 in Best Transmission Leak Sealer Of 2024
Ranked #10 in Best Automatic Transmission Fluids Of 2024
8.2We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $$
FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
- The #1 transmission problem solving additive
- Contains no solvents
- Can be added to existing fluid without draining any out
- Effective in an extremely high percentage of cases
- Extends needed protection to planetary gears
- Reduces the need for frequent fluid changes, extends fluid life up to 4 times longer
- A must for motor homes and commercial vehicles
- Pour one 24 oz. bottle into your existing fluid without the need for draining
- For larger or heavily worn transmissions, a second bottle may be required
- In compact or sub-compact vehicles, a 12 oz. bottle is recommended
15
Liqui Moly 2020 Motor Oil Saver
LIQUI MOLYBrand
2020Model
8.2We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $$$
FreeShipping
Visit Store » B and S Supply ( 4.59 / 5 )
16
Lucas Oil 10279 Engine Oil Stop Leak
LUCAS OILBrand
10279Model
6.0H*4.0L*6.0W inchesDimension
7.85 lbWeight
8.2We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Very Good
Price: $$$
FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
17
Interdynamics 374CS Certified Auto Pro Oil And Fuel System Uv Dye Leak Detection
INTERDYNAMICSBrand
374CSModel
0.0H*0.0L*0.0W inchesDimension
0.1 lbWeight
8.0We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Good
Price: $
FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
18
Lucas LUCA10118 Oil 10118 High Mileage Oil Stabilizer
LUCASBrand
LUCA10118Model
3.3H*11.75L*3.3W inchesDimension
1.0 lbWeight
Ranked #13 in Best Semi Truck Engine Oil Of 2024
8.0We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Good
Price: $$
Save 30% + FreeShipping
Visit Store » Amazon.com ( 4.68 / 5 )
Features
19
Liqui Moly 1042 Gear-Oil Leak Stop | 50 Ml | Oil Additive
LIQUI MOLYBrand
1042Model
6.65H*1.22L*1.93W inchesDimension
0.1 lbWeight
7.9We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Good
Price: $$$
FreeShipping
Visit Store » UMS Official ( 4.92 / 5 )
Features
- Reduces oil loss via leaky seals, prevents oil spots and pollution of the environment
- Protects from deficient lubrication and transmission damage
- Secures optimum lubricating action and increases operational reliability
- Prevents transmission oil leaking onto clutches
- Compatible with commercially available gear oils, simple and safe to use
20
Lucas Oil 051-523 10019 Hydraulic Oil Booster And Stop Leak
LUCAS OILBrand
051-523Model
3.3H*11.6L*3.35W inchesDimension
2.03 lbWeight
7.9We rank the products based on several factors, like features, price, customer reviews, and so on.
Rating: Good
Price: $$
FreeShipping
Visit Store » B and S Supply ( 4.59 / 5 )
Features
- Reduces the operating temperature of hydraulic systems
- Conditions old seals and O-rings to stop and prevent future leaks
- Well suited for use in equipment with wet brakes
- Removes varnish and restores pressure for more efficient operation
- Compatible with both synthetic and conventional hydraulic fluids
- Add lubricity for less friction, less wear, less heat and less energy consumption
- Extends the life of hydraulic fluid up to 2 times