10 Best Additive to Stop Oil Leaks in 2022 – [Top Picks]

We are reader-supported. When you buy through links on our website, we may earn an affiliate percentage.

We’ve got you covered for the best additive to stop oil leaks! We did hours of research and analyzed countless online databases, forums, and real user reviews to find the highest-quality products available today.

These are A+ products and have received high ratings from users, so you can be confident they’re worth your time and money. Let’s take a look at our top picks!

30% OffEDITOR'S CHOICE
Bar's Leaks Rear Main Seal Repair, 16.9 oz
  • Seals timing cover, cam seal, rear main and other hard to stop oil leaks
  • Add to engine oil
  • Specifically designed to seal rear main leaks, but also works better than a conventional stop leak on all other leaks
  • Add entire bottle of Rear Main Seal Repair to engine crankcase (where you add oil) at or between oil changes. Do not overfill. Most leaks will stop within 100 miles or 2 days of driving

Top 10 Additive to Stop Oil Leaks – [Highly Rated]


10 Best Additive to Stop Oil Leaks – [Editor’s Recommendations]

30% OffOUR #1 PICK
Bar's Leaks Rear Main Seal Repair, 16.9 oz
  • Seals timing cover, cam seal, rear main and other hard to stop oil leaks
  • Add to engine oil
  • Specifically designed to seal rear main leaks, but also works better than a conventional stop leak on all other leaks
  • Add entire bottle of Rear Main Seal Repair to engine crankcase (where you add oil) at or between oil changes. Do not overfill. Most leaks will stop within 100 miles or 2 days of driving
26% OffOUR #2 PICK
Bar's Leaks MS-1 Main Seal Motor Oil Leak Repair, 32 fl. Oz.
  • Safe and easy to use, and works quickly
  • Best stop leak formula money can Buy
  • Synthetic blend, for all engines
  • Repair leaking front and rear main seals
  • Stop cam and timing seal leaks
OUR #3 PICK
Bar's Leaks Oil Seal Engine Oil Burning and Leak Repair
  • This Premium Quality Synthetic Blend Works With All Types Of Motor/Engine Oil Including Regular Petroleum, High Mileage, Synthetic Blends And Fully Synthetic Formulas
  • 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
  • Can Also Be Used In Heavy-Duty Applications As Well As Tractors, Boats, Rv'S, Motorcycles (Including Wet Clutch), Atv'S, Lawn Equipment
  • 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
OUR #4 PICK
High Mileage Oil Treatment, Stop Leak Formula for Cars and Trucks, 15 Oz, STP
  • One 15 fl oz bottle of STP High Mileage Oil Treatment + Stop Leak
  • ZDDP oil additive prevents wear to protect your high-mileage vehicle
  • High-viscosity formula creates a thick cushion between moving engine parts to reduce friction
  • Leak stopper helps prevent engine leaks, noises and smoking and helps to rejuvenate seals and gaskets
  • Add this oil treatment to engine oil during every oil change
OUR #5 PICK
ATP AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle
  • 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
OUR #6 PICK
The WIDELUX 7.3 Powerstroke Hilux Build
  • Amazon Prime Video (Video on Demand)
  • Josh Mazerolle, Fat Erik (Actors)
  • Josh Mazerolle (Director) - Matt Myrick (Producer)
  • English (Playback Language)
  • English (Subtitle)
OUR #7 PICK
Bar's Leaks Axle and Differential Gear Repair
  • Seal Conditioner – stops current and prevents future leaks by protecting and reconditioning seals.
  • Extreme Pressure (EP) and Anti-Wear (AW) Agents – provide excellent metal-to-metal wear protection reducing noise and gear temperatures. Our sulfur, nitrogen and phosphorus additives meet the requirements of API GL-4 and GL-5 specifications.
  • Friction Modifier – supplements the EP/AW additives to help reduce noise and wear. This in turn helps shifting in a manual transmission and also stops chatter in limited-slip posi-traction axles.
  • Performance Additive Booster – includes tackifying agents and highly sheer-stable multigrade viscosity modifiers to keep oil on the gears and bearings where it can better lubricate, especially at higher temperatures. Pour Point Depressant (PPD) allows product to flow even at very low temps.
  • 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.
OUR #8 PICK
Lucas Oil 10279 Engine Oil Stop Leak - 1 Gallon
  • Compatible with petroleum, semi-synthetic and full synthetic motor oils
  • Renews worn seals with no risk of damage or eventual corrosion
  • Reduces engine noise and oil consumption, while raising oil pressure
  • Contains no harmful solvents
35% OffOUR #9 PICK
ASE Engine Repair Certification Test (A1) AudioLearn - Complete Audio Review for the Automotive Service Excellence (ASE) Automobile & Light Truck Certification - Engine Repair Certification Test (A1)
  • Audible Audiobook
  • AudioLearn Content Team (Author) - Lon Harris (Narrator)
  • English (Publication Language)
  • 12/10/2018 (Publication Date) - AudioLearn (Publisher)
OUR #10 PICK
Premium Grade Essential Oils Set - BluSpirits Pack of 6 Therapeutic Grade Oil for Aromatherapy (Lavender, Orange, Peppermint, Eucalyptus, Tea Tree, Lemongrass) (6) with Free Blend Booklet
  • Pack of 6 essential oils - BluSpirits pack of essential oils includes Lavender, Tea Tree, Peppermint, Eucalyptus, Orange, and, Lemongrass (10ml each), with each essential oil having its own unique uses and properties.
  • High-grade essential oils - All oils are 100% pure, essential, and undiluted, and no fillers, additives, bases or carriers, have been added. So, you can be sure of the purity of these essential oils.
  • Complete well-being collection - BluSpirits essential oil pack contains the 6 most popular essential oils. These oils are popular for their properties and are well-known for their wonderful effects.The set gives a complimentary booklet which contains recipes to mix the oils to make blends for various purposes.
  • For the perfect spa-experience - These 100% essential and travel-friendly pack of essential oils offer you the perfect spa experience at home or on-the-go. Plus, you get a booklet with the purchase to give you complete information about the excellent benefits of these essential oils.
  • Great for gifting - This exquisite essential oils pack is the perfect gift for you or for a loved one. delight yourself to great moments of peace and mindfulness with these amazing essential oils.

How to Choose the Best Additive to Stop Oil Leaks?

When it comes to purchasing additive to stop oil leaks, there are a lot of factors to consider. With so many choices on the market, it can be tough to decide what to buy. However, by keeping the following factors in mind, you can make your next purchase with confidence.

1. Price

One of the most important factors to consider when purchasing additive to stop oil leaks is the price. Not only should you consider the cost of the product, but also the cost of shipping and handling. It is important to compare prices between different retailers so that you can find the best deal.

2. Features

When looking at additive to stop oil leaks, it is important to read the description carefully. This will give you a good idea of what the product is and how it works. It is also important to consider the features of the product. Some products have more features than others, and these features may be important to you.

3. Reviews

It is always helpful to read reviews before you buy additive to stop oil leaks. This will give you an idea of how other people have used the product and what their thoughts are. Additionally, reviews can help you make a more informed decision about the additive to stop oil leaks.

4. Comparisons

If you are looking for a specific additive to stop oil leaks, it is helpful to look at similar products to see if they are cheaper or better quality. This can help you make a decision without having to spend a lot of time researching the matter. It is also helpful to talk to friends and family members who may have found a good deal on a certain product.

5. Brands

One of the most important factors to consider when purchasing additive to stop oil leaks is the manufacturer. Make sure you are buying from a reputable brand that you can trust. There are a lot of companies that make low quality products. They might not last as long as you would like, or they might not function as they are supposed to.

6. Warranty

When purchasing additive to stop oil leaks, it is always important to consider the warranty. This will give you peace of mind in case something goes wrong with the product. If the product has a warranty, make sure to read the terms and conditions carefully.


Final Words

So there you have it! We hope our research and hard work have helped you find the best additive to stop oil leaks. If you have any questions, feel free to contact us, and we’ll sort it out for you.

30% OffEDITOR'S CHOICE
Bar's Leaks Rear Main Seal Repair, 16.9 oz
  • Seals timing cover, cam seal, rear main and other hard to stop oil leaks
  • Add to engine oil
  • Specifically designed to seal rear main leaks, but also works better than a conventional stop leak on all other leaks
  • Add entire bottle of Rear Main Seal Repair to engine crankcase (where you add oil) at or between oil changes. Do not overfill. Most leaks will stop within 100 miles or 2 days of driving