The 8 Best Rear Main Seal Additives (2022 reviews)

rear main seal additives
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Are you planning to buy rear main seal additives, and are you confused about the options ? This page is just for you.

Our review process:

Our Top Picks:

Best Overall:
Buy: Lucas Oil Rear Main Seal Additive
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Best For Fuel Economy:
Buy: Restore Rear Main Seal Additive
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Best For Lifter Noise:
Buy: Rislone Rear Main Seal Additive
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Best For More Power:
Buy: Tribotex Rear Main Seal Additive
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Best With Synthetic Or Regular Oil:
Buy: Bars Leaks Rear Main Seal Additive
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Works With All Gasoline:
Buy: Bars Leaks Awesome Product
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Best For Great Price:
Buy: No Leak Rear Main Seal Additive
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Best For Power Steering:
Buy: Motorkote Rear Main Seal Additive
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Best Overall: Lucas Oil Rear Main Seal Additive

Lucas Oil Rear Main Seal Additive
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The Lucas Oil Rear Main Seal Additive's material feels more premium than its price would suggest. The lucas oil rear main seal additive is made with great stuff and it is made for good stuff. Use luca oil stabilizer in gear oil to stop leaks, reduce operating temperatures and increase the life of the gear oil. Also, the additive does what it says and it is made for piece of mind.

The additive allows motor oils to a higher degree of lubricity which reduces oil consumption and operating temperatures. Lastly, the lucas oil rear main seal additive is a 100% petroleum product formulated to eliminate dry starts and reduce friction, heat and wear in any type of engine.

Most buyers quickly discover that the additive is super thick and will take 40 minutes to drain from the bottle. In addition, they also found that the additive is a very good buy and shipping is great. In addition, they strongly agree that the additive includes reduced friction, wear, corrosion and oxidation, all of which may contribute to low compression problems. With no doubts, this product passed the test and had very satisfied buyers eager to share their experience.

Top Customer Quotes:
  • This has miles per gallon and it slows the burn.
  • This works great, changed the oil and it has quiet the engine.
  • This is great for synthetic oils and it has added one bottle.
  • There have been no other issues ever since.

Best For Fuel Economy: Restore Rear Main Seal Additive

Restore Rear Main Seal Additive
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The best part: restoring rear main seal additive costs comparatively low and it is available to ship in 24 hours. The restored rear main seal additive is great for gas mileage and it smooth after use. Make sure this fits by entering your model number. Also, this works as advertised and it improves performance.

The additive is great for fresh oil change, is for small engines and it is made for good stuff. In addition, it provides extreme pressure lubrication to help protect engine components from excessive wear. Most importantly, the restored rear main seal additive can for fuel economy and it is designed to be worth every penny.

Most buyers quickly discovered that the additive is not a substitute for replacing worn engine parts. In addition, they also found that the additive is for all gas and diesel engines except 2-strokes, and they have one for that. Moreover, a few say that the additive has brought a car ready for the junk or parts yard, back to life. Overall, buyers found this to be one of the best additives for daily purposes.

Top Customer Quotes:
  • This can be used in 2 stroke engines where oil is mixed with petrol.
  • This restores cylinder compression plus it is compatible with conventional or synthetic oil.
  • This means burning a lot of oil and that has been reduced also.
  • This is probably a bent valve, but it could be the piston rings were worn.

Best For Lifter Noise: Rislone Rear Main Seal Additive

Rislone Rear Main Seal 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 Rislone Rear Main Seal Additive is exactly that - it's a simple additive that hits all the right notes. The rislone rear main seal additive changes the oil and it does the job. The Manufacturer says: We have continued to evolve alongside the industry’s automotive technological changes in order to provide our customers with the best performance products out there. These deposits form within engines and can alter tolerances, stick valves and rings, cause noisy valves and lifters, and plug oil screens and passages.

The additive is smoother, works as advertised and it can be trusted for good quality. Also, this is perfect for one bottle of 4102 rislone engine treatment concentrate 16.9 oz. Most importantly, the rislone rear main seal additive reduces friction and wear, quiets noisy lifters and valves and removes and prevents sludge.

Almost all buyers found that the additive is firing on 5 cylinders instead of 6, though they never tripped a code. In addition, a few say that the additives have no effect, whatsoever, on the emissions read out. In short, for most buyers, Rislone product was what they were looking for.

Top Customer Quotes:
  • Remember, your car is what it eats.
  • This made the USA rare.
  • This will help keep those lifters pumped up at high miles.
  • This is good for the gm vortec series of engines.

Best For More Power: Tribotex Rear Main Seal Additive

Tribotex Rear Main Seal Additive
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The Tribotex Rear Main Seal Additive is capable of outshining several other additives featured in this list in overall features for the price point. The tribotex rear mainseal additive is very quiet, is environmentally safe and it works well for new cars. It is time to improve your engine and take your driving experience to a new level. Further, the additive is incredible, is good for gas mileage and it has changed oil.

The additive is constructed with over one million dollars of research and development support from the national science foundation and nasa. In addition, there is much more, is made for good stuff and it is made worth the money. Finally, the tribotex rear main sealadditive is a revolutionary breakthrough in engine coating technology.

Almost all buyers opine that the additive will be the cheapest $100.00 you will spend on that vehicle, as turbo failures and resulting damage are expensive as you have no doubt experienced. And, they strongly agree that the additive is supposed to be in for an entire oil change interval of 5k miles. Moreover, they say that the additive will work or whether you have some real problems. To sum up, the tone of buyers is very positive and we believe that the additive suits the purpose.

Top Customer Quotes:
  • The manufacturer says: our treatment comes with a 100% satisfaction guarantee.
  • This is recommended to reapply once a year if the engine is a daily driver.
  • This is running smooth and has been running smooth for the past 6 months.
  • Is your car, truck, or van's engine getting noisy ?.

Best With Synthetic Or Regular Oil: Bars Leaks Rear Main Seal Additive

Bars Leaks Rear Main Seal 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 bars leaked rear main seal additive is exactly that - it's a simple additive that hits all the right notes. The bars leak rearmain seal additive is designed for one bottle to be installed in a standard passenger car or light truck. The Manufacturer says: Our products are time-tested and proven effective by the tens of millions of customers we’ve served in nearly 70 years of doing business. Moreover, it comes with a throttle body and it is commonly.

Lastly, the bars leak rear main sealadditive works as advertised and it comes with a part number.

Almost all buyers quickly discovered that the additive is possible that the engine had been damaged and was burning so much oil. Further, they say that the additive is great with synthetic or regular oil.

Why We Like This:
  • This can help with fuel economy and it works great.
  • The fastest, safest way to get your show back on the road.
  • 1 bottle has 4 to 5 quarts of oil.
  • The Manufacturer says: you’ll see that our passion shines through in everything we do.

Works With All Gasoline: Bars Leaks Awesome Product

Bars Leaks Awesome Product
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The bars leak awesome product should be able to handle its purpose and duties with ease. The bars leak awesome product works for rear main seals, is designed to worth every penny and it is great for synthetic oils. The Manufacturer says: We’ve been proving that since 1947, and no other brand even comes close. Moreover, they ’re simple to use, too.

Most importantly, the Bars Leaks Awesome Products can be added at anytime and used with all types of motor oil and engines.

Almost all buyers found that the additive was used to seal this leak. And, they strongly agree that the additive is guaranteed to stop any oil leak. Overall, the tone of buyers is very positive and we believe that the additive suits the purpose.

Top Customer Quotes:
  • Manufacturer says: we design our products to be effective, safe and easy to use.
  • The Manufacturer says: you’ll see that our passion shines through in everything we do.
  • Repair leaking front and rear main seals.
  • This works with all gasoline and diesel engines.

Best For Great Price: No Leak Rear Main Seal Additive

No Leak Rear Main Seal Additive
Buy on Amazon

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 No Leak Rear Main Seal Additive is exactly that - it's a simple additive that hits all the right notes. The no leak rear mainseal additive works for rearmain seals, has changed oil and it stopped the leak. Gold eagle no leak engine oil treatment stops and prevents engine oil leaks. This product comes in a clear, easy to pour 473ml bottle.

The additive is safe and compatible with all engine oils and is recommended for rear main seal repairs. Above all, the no leak rear main seal additive is industrial and it is common.

Most buyers found that the additive is happy to be able to buy again. Moreover, they say that the additive will not stop catastrophic leaks. Moreover, they also found that the additive will not work for head gaskets or intake manifolds. Overall, most buyers agree that the additive suits best, and no one questions it.

Top Customer Quotes:
  • Stops smoke and repairs rear main seals.
  • This is designed for a great price and it works as advertised.
  • This works well and fast and also is good at making a seal swell.
  • Stops and prevents engine oil leaks caused by dried, shrunken, or hardened seals.

Best For Power Steering: Motorkote Rear Main Seal Additive

Motorkote Rear Main Seal Additive
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The Motorkote Rear Main Seal Additive's material feels more premium than its price would suggest. The motorkote rear main seal additive works well for power steering and it contains no solids. Make sure this fits by entering your model number. Moreover, it added some more later and it is good for power steering systems. Lastly, the motorkote rear main seal additive is compatible with mineral and synthetic fluids, as well as, all types/grades of motor oil.

"They claim you can use it as a preventative treatment to stop leaks from occurring. " - says, one customer. As a result, buyers were very happy to recommend it to friends and would-be buyers.

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