The 10 Best Motor Oil Stop Leak Additives (2022 reviews)

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Are you looking for collection of best motor oil stop leak additives ? You have landed on the right page.

Our review process:

Our Top Picks:

Best Overall:
Buy: Lucas Oil Motor Oil Stop Leak Additive
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Best For Fuel Economy:
Buy: Prolong Super Lubricants Motor Oil Stop Leak Additive
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Best For Fuel Tank:
Buy: Slick 50 Motor Oil Stop Leak Additive
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Best For Zddp Additive:
Buy: Hyper Lube By Rislone Motor Oil Stop Leak Additive
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Best For Lifter Noise:
Buy: Liqui Moly Motor Oil Stop Leak Additive
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Best With Old Engines:
Buy: Restore Motor Oil Stop Leak Additive
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Best For Engine Repair:
Buy: Bestline Superior Lubricants Motor Oil Stop Leak Additive
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Best For More Power:
Buy: Tribotex Motor Oil Stop Leak Additive
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Best For Small Engines:
Buy: Bars Leaks Motor Oil Stop Leak Additive
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Best For Power Steering:
Buy: Motorkote Motor Oil Stop Leak Additive
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Best Overall: Lucas Oil Motor Oil Stop Leak Additive

Lucas Oil Motor Oil Stop Leak Additive
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Compared with other additives in this category, the Lucas Oil Motor Oil Stop Leak Additive has a design with broader appeal. The lucas oil motor oil stop leak additive is great for gas mileage, feels like new and it does the job. Make sure this fits by entering your model number. Also, the additive slows the burn, is great with old engines and it is for day - use vehicles.

The additive has miles per gallon, contrary to some belief, and it is used for great products. Further, it is made with great stuff and it has a quiet engine. Most importantly, the luca oil motor oil stop leak additive has been used for years and it has added one bottle.

Most customers found that the additive is good for preventative maintenance in older vehicles. Moreover, a few also found that the additive is super thick and will take 40 minutes to drain from the bottle. In short, many buyers have used the additive for more than a few months without any issues, and it shows no sign of giving up.

Top Customer Quotes:
  • This runs flawlessly and it is good for good oil.
  • This is good for engines with a lot of miles.
  • This works in about any type of engine or gear box.
  • This reduces engine noise, and extends engine oil life.

Best For Fuel Economy: Prolong Super Lubricants Motor Oil Stop Leak Additive

Prolong Super Lubricants Motor Oil Stop Leak Additive
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Not everyone likes to purchase additives for their daily usage, but the Prolong Super Lubricants Motor Oil Stop Leak Additive would be an anomoly. The prolong super lubricants motor oil stop leak additive is formulated with advanced technology. Make sure this fits by entering your model number. Further, it is perfect for the valve cover gasket, is good for the rear differential and it is worth the money.

The additive is pumped through the engine, prolonging engine treatment molecules interact with the metal surfaces. They chemically bond to create a protective layer that reduces damaging friction and heat. Further, this is incredible, changed oil and it is great with air force. Lastly, the prolong super lubricants motor oil stop leak additive is recommended that engine treatment be used at each oil change, every six months or 6, 000 miles.

Most buyers opine that the additives are testing the lubricity coefficient of some of these engine additives. Further, a few say that the additive will typically significantly improve any oil. Moreover, they say that the additives make the difference between an old almost wormed out car. In short, the tone of buyers is very positive and we believe that the additive suits the purpose.

Top Customer Quotes:
  • This is good for gas mileage and it changed the filter.
  • This is a super lubricant for internal combustion engines.
  • This is formulated to treat the metal surfaces of both gasoline and diesel - fueled engines.
  • This will work with manual transmissions and differentials.

Best For Fuel Tank: Slick 50 Motor Oil Stop Leak Additive

Slick 50 Motor Oil Stop Leak Additive
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Slick 50 line of additives comes in a pretty wide variety of styles, so you can definitely find one that suits your individual preferences and needs. The Slick 50 Motor Oil Stop Leak Additive comes with great stuff and it is good for gas mileage. Powerful detergents to remove and prevent oil sludge, use during your next oil change or between changes to replace lost additive content. Moreover, this makes for less wear, used for many years and it has reduced emissions.

Finally, the slick 50 motor oil stop leak additive is built for fuel economy, is designed for ultimate performance and it has added one bottle.

Most buyers find that the additive will release the dirt from the inside of the crank case. Moreover, a few strongly agree that the additive is ticking and the ac quit working. In addition, a few also found that this is an engine oil teflon treatment that provides additional protection against wear of internal engine moving parts by friction reduction.

Top Customer Quotes:
  • This will be fine with high mileage.
  • This is fully compatible with all conventional, semi-synthetic and full - synthetic oil types.
  • This is used for less heat and it is used at every oil change.
  • This does what it says and it is made worth the money.

Best For Zddp Additive: Hyper Lube By Rislone Motor Oil Stop Leak Additive

Hyper Lube By Rislone Motor Oil Stop Leak Additive
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Best part: Hyper Lube By Rislone Motor Oil Stop Leak Additive costs comparatively low and it is available to ship in 24 hours. The hyper lube by Rislone motor oil stop leak additive provides great value and it runs well. Zinc treatment cools and lubricates the moving parts in your engine better than oil alone. Further, it is great for less wear, is designed for a great price and it does what it says.

The additive has added one bottle and it is for gasoline engines. Also, it reduces piston scuffing to add to that reduces friction and wear, especially at start-up, helping to eliminate dry starts. Finally, the hyper lube by Rislone motor oil stop leak additive is built for fuel economy, works great and it is worth the money.

Most buyers found that the additive can be used during oil change, or added in between oil changes. In addition, they say that the additive is compatible with and works with all petroleum-based motor oils, including conventional, high mileage and synthetic formulas. In addition, they say that the additive cleans the inside of a motor like nothing else. In conclusion, most customers call the additive suits best, and no one questions it.

Top Customer Quotes:
  • This is a must add to the crankcase.
  • This is made with great stuff and it is great with old engines.
  • We will come up with something for new vehicles soon.
  • To go beyond being an anti-wear additive, it is also a corrosion inhibitor.

Best For Lifter Noise: Liqui Moly Motor Oil Stop Leak Additive

Liqui Moly Motor Oil Stop Leak Additive
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Not everyone likes to purchase additives for their regular usage, but the Liqui Moly Motor Oil Stop Leak Additive would be an anomoly. The liqui moly motor oil stop leak additive is gentle, is designed to worth every penny and it comes with a throttle body. The Manufacturer says: And we have been raising the bar in terms of quality and service for 60 years. Further, this is made from raw material deliveries, to production, right through to shipment.

The additive runs quieter and it changes the oil. Finally, the liqui moly motor oilstop leak additive improves the combustion process and restores full engine performance.

Most buyers opine that the additive is easy to follow and immediately after running the flush and. And, they say that the additives are some really good stuff. Overall, at the price, they believe that they got a steal of a deal with it.

Top Customer Quotes:
  • This is good job as this liquid molly and a lot less expensive.
  • This is good for up to 5l of engine oil sump capacity.
  • This is good for high milage vehicles.
  • This is cleaning out deposits, how much normal contamination by old oil, etc.

Best With Old Engines: Restore Motor Oil Stop Leak Additive

Restore Motor Oil Stop Leak Additive
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We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate additive. The restored motor oil stopleak additive is exactly that - it's a simple additive that hits all the right notes. The restored motoroil stop leakadditive has changed oil and it improved performance. Make sure this fits by entering your model number. In addition, this is for fuel economy, is good for piece of mind and it has used every oil change.

Above all, the Restore Motor Oil Stop Leak Additive provides extreme pressure lubrication to help protect engine components from excessive wear.

Almost all customers quickly discovered that the additive does improve compression and reduce oil usage. Moreover, a few strongly agree that the additive takes time to take effect. And, they strongly agree that the only fix is to replace the head gasket, which is costly. In conclusion, most buyers found the additive suits best, and no one questions it.

Top Customer Quotes:
  • This is not a substitute for replacing worn engine parts.
  • It runs great and it works as advertised.
  • This is good for gas mileage and it has compression loss.
  • This is probably a bent valve, but it could be the piston rings were worn.

Best For Engine Repair: Bestline Superior Lubricants Motor Oil Stop Leak Additive

Bestline Superior Lubricants Motor Oil Stop Leak Additive
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If you want nothing but an additive that is reliable, this most superior lubricant motor oil stop leak additive is certainly a wise investment. The most superior lubricant motor oil stop leak additive is compatible with all types of motor oil and can be used in gas or diesel engines. Bestline uses its revolutionary formula to provide your vehicle with maximum engine life protection, proven to increase the life of your engine by 80. This engine treatment reduces the likelihood of low - speed, pre - ignition, reduces friction for improved fuel mileage, and offers protection against engine wear.

The additive has been formulated with a full-synthetic base oil, designed specifically for longer drain intervals. Finally, the most superior lubricant motor oil stop leak additive is universally compatible, is common and it is worth the money.

Almost all customers opine that the additive is better than any big brand name out there. And, they also found that the additive works well in any car. In addition, a few say that the additive looks new even at oil change time.

Top Customer Quotes:
  • Manufacturer says: at bestline we take car care seriously.
  • This can be used in bestline racing engine treatment formulas.
  • This runs quieter and it has treats internal components.
  • This is for fuel economy and it works very well.

Best For More Power: Tribotex Motor Oil Stop Leak Additive

Tribotex Motor Oil Stop Leak Additive
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We would, of course, be remiss if we didn't mention Tribotex Motor Oil Stop Leak Additive for regular use. The tribotex motoroil stopleak additive is great for fuel economy and it is much more. The Manufacturer says: Our specialists recommend treating your engine every 40, 000 miles. In addition, it has miles per gallon and it is worth the money.

The additive is a more powerful dose for bigger engines. And, the additive is also non-toxic, safe, and made by scientists in the USA. Lastly, the tribotex motor oilstop leakadditive is unlike any other, because it uses millions of tiny particles that form together to create a high - performance (diamond-like carbon) coating.

Almost all buyers quickly discovered that the additive works in a wankel motor then it works in all. In addition, they also found that the additive will not replace worn metal in places but rather fill in cracks in the cylinder that drop the compression of the engine. Further, they strongly agree that the machine uses the additive for 40, 000 miles.

Top Customer Quotes:
  • This does state the effects will be noticeable after 500 miles.
  • This looks like it must be doing its job.
  • It has 222, 000 miles on it now.
  • A material that was so unique it had to be synthesized.

Best For Small Engines: Bars Leaks Motor Oil Stop Leak Additive

Bars Leaks Motor Oil Stop Leak Additive
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If you want nothing but the most convenient additive, then Bars Leaks Motor Oil Stop Leak Additive is the one you should definitely consider. The bars leak motor oil stop leak additive works very well and it is common. Before you know it, you're dealing with an oil - burning problem. Moreover, it works with all types of motor/engine oil, including regular petroleum, high mileage, synthetic blends and fully synthetic formulas.

The additive comes with a part number and it works for rear main seal leak. Also, it works great and it changed the oil. Lastly, the bars leak motor oil stop leak additive is if the cylinder walls are allowing oil to leak up from the bottom of the engine, past the piston and into the combustion chamber.

Almost all customers agree that the additive is lower than 4 quarts capacity. Please use 3 ounces of os-1 per quart of system oil capacity. Moreover, they also found that the additive can be found at the following link. Moreover, a few say that the additive covers 3, 4, 5, 6, 8 and 10 cylinder engines in all cars, trucks, vans and SUV’S.

Top Customer Quotes:
  • This works well, but it won't fix a gasket that's not there.
  • This can stay in till your next oil change, won't hurt a thing.
  • This will equal one quart of fluid as each bottle is a 1/2 quart.
  • This is a rubber or metal gasket that will seal the seams.

Best For Power Steering: Motorkote Motor Oil Stop Leak Additive

Motorkote Motor Oil Stop Leak Additive
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Not everyone likes to purchase additives for their daily usage, but the Motorkote Motor Oil Stop Leak Additive would be an anomoly. The motorkote motor oil stop leak additive is great for power steering systems and it works for rear main seal leak. Make sure this fits by entering your model number. Further, the additive is compatible with mineral and synthetic fluids, as well as, all types/grades of motor oil. Lastly, the motorkote motor oil stop leak additive was added some more later and it contains no solids.

"They claim you can use it as a preventative treatment to stop leaks from occurring. " - says, one customer. Therefore, most customers find the additive is functionally comfortable and no one questions it.

Why We Like This:
  • Uses: engine, power steering, transmission, differentials, crankshaft main seals, rack and pinion.
  • Lot of satisfied buyers.