Best Engine Oil Stop Leak Additive: image
Top Pick

Oil, which contains zinc anti-wear agent ZDDP, is specially formulated to help fight metal-to-metal friction by providing a thicker cushion between moving engine parts. The formula has been tested and found to be effective for cars up to six years. It also helps prevent the formation of carbon monoxide (CO2) in diesel engines. Notably, this product was launched in India in 2015. It is used in over 1 lakh vehicles worldwide.

Value for Money

Lucas Engine Oil Stop Leak is an all new formulation of Lucas additives and very specific base stocks designed to stop seal leaks in engines. The product has been manufactured in the United States with a special blend of oils, which are compatible with petroleum, semi-synthetic and full synthetic motor oils. It contains no harmful chemicals or additives. Notably, Lucas does not sell any oil products under its brand name. It is also available in several other brands.

Honorable Mention

Lucas Engine Oil Stop Leak is an all-new formulation of Lucas additives and very specific base stocks designed to stop seal leaks in engines. The formula contains no harmful solvents and has a low oil consumption. It can be used with petrol, diesel, natural gas, electric motor oils, etc. Not only does it reduce engine noise but also raises oil pressure. It’s made from 100% renewable energy sources including wind turbines and solar panels. This product was launched by Lucas in 2015. It is available in three sizes.

Best Engine Oil Stop Leak Additive

Top 10 Best Engine Oil Stop Leak Additive

1

Lucas Oil 10278 Engine Oil Stop Leak, 1 Quart

3,489 ratings | 30 offers | 3,489 Reviews
Price: $9.17$34.46
Why we chose it
  • Compatible with petroleum, semi-synthetic and full synthetic motor oils
  • Reduces engine noise and oil consumption, while raising oil pressure
  • Contains no harmful solvents
  • Renews worn seals with no risk of damage or eventual corrosion
Lucas Oil 10278 Engine Oil Stop Leak, 1 Quart: image
90%
customers recommend this product
4.5/ 5
Mileage4.3
Value for money4.2
2

Bar’s Leaks Oil Seal Engine Oil Burning and Leak Repair

1,130 ratings | 4 offers | 1,130 Reviews
Price: $12.39$32.95
Why we chose it
  • In most cases the oil leak issue will be repaired with a single dosage. However, for best results and to prevent the problems from reoccurring, use with every other oil change, or once per year
  • Can also be used in heavy-duty applications as well as tractors, boats, RV’s, motorcycles (including wet clutch),ATV’s, lawn equipment
  • Works in all gasoline and diesel engines including turbocharged, Eco Boost, hybrid and even racing engines, including 3, 4, 5, 6, 8 and 10 cylinder engines in all cars, trucks, vans and SUV’s
  • Use 1/2 bottle for smaller systems (3. 5 – 4. 4 quarts of oil),in larger systems use 1 bottle for every 6 quarts, in small engines use approximately 3oz to every quart of oil
  • This premium quality synthetic blend works with all types of motor/engine oil including regular petroleum, high mileage, synthetic blends and fully synthetic formulas
Bar's Leaks Oil Seal Engine Oil Burning and Leak Repair: image
82%
customers recommend this product
4.1/ 5
Easy to use4.2
Value for money3.7
Mileage3.6
3

Bar’s Leaks – 1000 Engine Repair – 16.9 oz

1,115 ratings | 18 offers | 1,115 Reviews
Price: $11.29$29.18
Why we chose it
  • Increases oil pressure
  • Reduces friction
  • Reduces oil consumption
  • Helps clean internal parts
  • Quiets noise
Bar's Leaks - 1000 Engine Repair - 16.9 oz: image
86%
customers recommend this product
4.3/ 5
Value for money3.6
Mileage3.6
Top Pick
4
Why we chose it
  • Helps stop leaks, noise and smoking
  • Excellent for all cars, light trucks and SUV’s
  • Use every oil change
  • Rejuvenates seals and gaskets
  • Contains zinc anti-wear agent ZDDP
STP High Mileage Oil Treatment, Formula for Cars & Truck, Stop Leak, Bottles, 15 Fl Oz, 15604B: image
92%
customers recommend this product
4.6/ 5
Easy to use4.7
Mileage4.6
Value for money4.5
5
Why we chose it
  • Restores gaskets seals to stop and prevent engine oil leaks
  • Works with all types of motor oil
  • Compatible with vehicle type: Car
  • Stops and seals motor oil leaks
Bar's Leaks 1010 Engine Oil Stop Leak Concentrate, 11 oz, 1 Pack, Grey: image
84%
customers recommend this product
4.2/ 5
Easy to use4.8
Value for money4
Mileage4
6
Why we chose it
  • Package Weight: 33.85 pounds
  • Compatible with petroleum, semi-synthetic and full synthetic motor oils
  • Country of Origin : United States
  • Package Dimensions: 31.496 H x 32.257 L x 33.02 W (centimetres)
Lucas Oil 10279-4PK Engine Oil Stop Leak - 1 Gallon, (Case of 4): image
88%
customers recommend this product
4.4/ 5
7

Lucas Oil Products LUC10278 Engine Oil Stop Leak, 1 Quart, 1 Pack

250 ratings | 20 offers | 250 Reviews
Price: $12.99$23.49
Why we chose it
  • Package Dimensions: 8.89 L X 10.16 W X 30.48 H (Centimeters)
  • Package Weight: 0.953 Kilograms
  • Product Type: Auto Oil
  • Country Of Origin: United States
Lucas Oil Products LUC10278 Engine Oil Stop Leak, 1 Quart, 1 Pack: image
90%
customers recommend this product
4.5/ 5
Easy to use4.1
Value for money3.9
Mileage3.8
8

NO LEAK 20401 Engine Oil Stop Leak, 16 Fl oz.

258 ratings | 4 offers | 258 Reviews
Price: $12.99$16.95
Why we chose it
  • Recommended for rear main seal repair
  • Stops AND prevents engine oil leaks caused by dried, shrunken, or harden seals
  • Safe & compatible with ALL engine oils
  • Stops smoke and repairs rear main seals
NO LEAK 20401 Engine Oil Stop Leak, 16 Fl oz.: image
80%
customers recommend this product
4/ 5
Mileage3.3
Value for money2.2
9

Engine Oil Stop Leak Top Off Additive/12×1/Quart

2 ratings | 1 offers | 2 Reviews
Price starts from: $1
Why we chose it
  • Automotive Engine Oil Additives
  • Automotive Engine Oil Additives
  • Automotive Engine Oil Additives
  • Automotive Engine Oil Additives
  • Automotive Engine Oil Additives
Engine Oil Stop Leak Top Off Additive/12x1/Quart: image
82%
customers recommend this product
4.1/ 5
10

No Leak, All in One Stop Leak

14 ratings | 2 offers | 14 Reviews
Price: $8.24$20.11
Why we chose it
  • Stops smoke and repairs rear main Seals
  • Seals leaks including: Power Steering, Transmission, Engine Oil, and Gear Oil
  • From the makers of STA-BIL
  • Made in the U.S.A.
  • 100% Money back guarantee
  • Stops hard shifting – Stops hard shifting
  • Stops squeals and repairs O-rings
No Leak, All in One Stop Leak: image
76%
customers recommend this product
3.8/ 5
Top Pick
STP High Mileage Oil Treatment, Formula for Cars & Truck, Stop Leak, Bottles, 15 Fl Oz, 15604B
This high-viscosity formula, complete with anti wear agent ZDDP, is specially formulated to help fight metal-to-metal friction by providing a thicker cushion between moving engine parts.
Ranking the Brands
Lucas Oil: 30.00%
Bar’s Leaks: 30.00%
STP: 10.00%
NO LEAK: 20.00%
: 10.00%

Comparison Table

Сomparison: Lucas Oil 10278 Engine Oil Stop Leak, 1 Quart: imageСomparison: Bar's Leaks Oil Seal Engine Oil Burning and Leak Repair: imageСomparison: Bar's Leaks - 1000 Engine Repair - 16.9 oz: imageСomparison: STP High Mileage Oil Treatment, Formula for Cars & Truck, Stop Leak, Bottles, 15 Fl Oz, 15604B: imageСomparison: Bar's Leaks 1010 Engine Oil Stop Leak Concentrate, 11 oz, 1 Pack, Grey: imageСomparison: Lucas Oil 10279-4PK Engine Oil Stop Leak - 1 Gallon, (Case of 4): imageСomparison: Lucas Oil Products LUC10278 Engine Oil Stop Leak, 1 Quart, 1 Pack: imageСomparison: NO LEAK 20401 Engine Oil Stop Leak, 16 Fl oz.: imageСomparison: Engine Oil Stop Leak Top Off Additive/12x1/Quart: imageСomparison: No Leak, All in One Stop Leak: image
Lucas Oil 10278 Engine Oil Stop Leak, 1 QuartBar’s Leaks Oil Seal Engine Oil Burning and Leak RepairBar’s Leaks – 1000 Engine Repair – 16.9 ozSTP High Mileage Oil Treatment, Formula for Cars & Truck, Stop Leak, Bottles, 15 Fl Oz, 15604BBar’s Leaks 1010 Engine Oil Stop Leak Concentrate, 11 oz, 1 Pack, GreyLucas Oil 10279-4PK Engine Oil Stop Leak – 1 Gallon, (Case of 4)Lucas Oil Products LUC10278 Engine Oil Stop Leak, 1 Quart, 1 PackNO LEAK 20401 Engine Oil Stop Leak, 16 Fl oz.Engine Oil Stop Leak Top Off Additive/12×1/QuartNo Leak, All in One Stop Leak
ManufacturerLUCAS OILBar’s ProductsBar’s LeaksSTPBar’s LeaksLucas OilLucas Oil ProductsGold Eagle Co.Gold Eagle Co.
BrandLucas OilBar’s LeaksBar’s LeaksSTPBar’s LeaksLucas OilLucas OilNO LEAKNO LEAK
Item Weight2.02 pounds1.1 pounds1.05 pounds15.7 ounces11.3 ounces33.8 pounds2.12 pounds13.1 ounces1.5 pounds
Product Dimensions3.3 x 3.3 x 11.75 inches7.41 x 2.85 x 1.35 inches7.22 x 3.65 x 1.85 inches1.8 x 3 x 6.5 inches13 x 12.7 x 12.4 inches3.4 x 3.35 x 11.75 inches8.44 x 5.56 x 8.88 inches3.75 x 2 x 8 inches
Is Discontinued By ManufacturerNoNoNoNoNo
Package InformationBottleBottleBottleBottle
Liquid Volume16.9 Fluid Ounces325 Milliliters32 Fluid Ounces473 Milliliters

Products with 5 star rating

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