Oil Additive For Valve Seals

Best Oil Additive For Valve Seals

Suffering the engine oil leakage is one of the major problems of old engines. You may encounter such problems if the engine gets aging or pass a high mileage.

Sometimes poor engine oil causes engine wear and tear, and that eventually breaks the valve seal elasticity. In this case, if you think only changing the engine oil can rectify the issues, you are wrong.

To prevent such happening and make sure the valve seal size and elasticity, you must choose the best oil additive for valve seals. In fact, a premium oil stop leak additive can restore the poor valve seals.

Therefore, to introduce you to some premium oil additives, we have narrowed down the list with the top 5 oil stop leak additives after thorough testing.

Product ImageProduct NameOur RatingsPrice
ATP AT-205 Re-Seal Stops Leaks, 8 Ounce BottleATP AT-205 Re-Seal Stops Leaks, 8 Ounce BottleCheck Price
Liqui Moly (20002) Cera Tec Friction Modifier - 300 mlLiqui Moly (20002) Cera Tec Friction Modifier - 300 mlCheck Price
Liqui Moly 2037 Pro-Line Engine FlushLiqui Moly 2037 Pro-Line Engine FlushCheck Price
Lucas Oil 10278 Engine Oil Stop Leak, 1 QuartLucas Oil 10278 Engine Oil Stop Leak, 1 QuartCheck Price
LM 1005 Oil Leak Stop 300 mlLM 1005 Oil Leak Stop 300 mlCheck Price

What are valve seals?

What are valve seals

Generally, Engine valve seals are known as valve stem seals that manage the lubrication of the valve stem. The main purpose of the valve stem seal is to prevent oil contamination from air or fuel in the combustion chamber of the engine.

Too little oil leakage leads to guide and stem wearing, and too much oil causes seal damage, oil consumption, carbon build-up, and another wearing.

Top 5 Best Oil Additive For Valve Seals Reviews

In this segment of the reviews, I have put forward detailed reviews with real user experiences to get you a clean view of each stop leaks additive in the list. Let’s check them out.

1. ATP AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle

ATP AT-205 Re-Seal Stops Leaks, 8 Ounce Bottle
When you look for a one-stop solution for valve seal leak, you need a reliable solution for these problems. Thus, I have put an oil stop leaks additive so that you can get out of the disastrous problems.

Well! To kick off the list, I have chosen the ATP AT-205 Re-Seal. You may ask why it’s there on the top list. After using the additive for a couple of weeks, you will get the right answer.

Besides, its price is another factor that made it stand out from the other standard oil additives in the market. That means you are about to have a better solution at a reasonable price.

What we experienced was a quick result immediately after using this one. That’s why it is called a professional-grade resealer. The good news is that it works for different types of gasket on your vehicles, such as engine, steering, hydraulic, and transmission.

Feature We Like Most:

What I most like about its compatibility features. It will allow using all conventional and synthetic oils. For example, you could undoubtedly use it with gear oil, ATF, hydraulic oil, and other engine fluids.

Probable Drawbacks:

Overuse of the additive can expand the gasket more than it requires.

Key Features:

  • Provides a quick action after use
  • A professional-graded stop leak additive
  • Compatible with all conventional and synthetic oils
  • Take immediate action for all gaskets on the vehicles

Final Opinion:

If you need immediate action to stop oil leakage and gasket rejuvenation, then this one is for you. Plus, the price is quite reasonable for this stop leaks additive.

2. Liqui Moly (20002) Cera Tec Friction Modifier – 300 ml

Liqui Moly (20002) Cera Tec Friction Modifier - 300 ml
A vehicle’s engines might face multiple problems like engine friction, fumes, and oil consumption, along with oil leakages. In this case, you can go with an additive that provides the maximum solution.

Likewise, Liqui Moly is such an oil additive that provides most engine solutions within a single bottle. And the result is quite visible immediately after using the oil.

Routine use of the additive prevents quick shrink of the gasket. Moreover, you will notice the zero oil leakage as it makes the gasket more flexible and restores the seals to their original size.

One attractive feature of this oil is friction reduction. If you usually hear a tick or knocking sound on the engine, these sounds go away after use a single bottle.

Feature We Like Most:

Liqui Moly offers wide compatibility with other engine oil. That means you can use the bottle with almost all commercial motor oils available on the market.

Probable Drawbacks:

It keeps the engine ticking sound silence for a certain mile, like more or less 200 miles.

Key Features:

  • Discourage any engine deposits
  • It can be used with all types of engine fluids
  • Compatible with any high or low temperatures
  • A better solution for engine friction reduction

Final Opinion:

If you are come across multiple engine problems and looking for ideal oil additives, then this pack is for you to solve your valve seals leakages.

3. Liqui Moly 2037 Pro-Line Engine Flush

Liqui Moly 2037 Pro-Line Engine Flush
Oil leaking and gasket shrinking are common scenarios for the old engine or due to high mileages. Thus, to rejuvenate your old engine, Liqui Moly comes with a Pro-Line Engine Flush. Let’s dig down a bit further.

You may be wondering whether you can use the oil for a diesel engine or not. I will assure you that this additive is for both diesel and gasoline engines.

At the very first use, if you notice the less performance, then wait for the second round. Generally, for the old engine, this additive works great from the second round as it cleans the entire engine on its first attempt.

Besides restoring the valve seals, it works for the engine exhaust catalysis converters. It enhances the catalysis converter performance to emit toxic gas from combustion.

Feature We Like Most:

There are no carbon building records in the oil. And after using it, you will notice very low sludge on the drain pan while changing the engine oil.

Probable Drawbacks:

Provides max performance for old vehicles, not for well-maintained engines.

Key Features:

  • Rejuvenates and restores gaskets and valve seals
  • Provides max performance on old engines
  • The result is clearly visible from the second round
  • Works for catalysis converts as well

Final Opinion:

If you own both gasoline and diesel engines and need a better engine treatment, then you are good to go with this one because it is one of the best oil stop leaks out there.

4. Lucas Oil 10278 Engine Oil Stop Leak, 1 Quart

Lucas Oil 10278 Engine Oil Stop Leak, 1 Quart
Suppose you aren’t satisfied with any additives to stop oil leakage and looking for the best oil additive for valve seals, then you are at the right place.

You have already familiar with the oil brand Lucas, and they are a well-reputed engine oil treatment brand in the USA due to their product’s performance. Likewise, Lucas oil stop leak valve seals has engineered this additive especially for stop leaks.

If you want to restore an old gasket or hardened valve seals, you just mix the additive with engine oils and see the miraculous result. From moderate to major issues, Lucas would be a standalone solution.

Furthermore, continued use of the additive works as a valve seal oil consumption repair and reduces engine noise altogether.

Feature We Like Most:

The best thing about the additive is its formula. It doesn’t contain any harmful substance. As a result, it helps to discourage any build-up in the engines.

Probable Drawbacks:

Focused only on oil leaks, so, sometimes it might not be effective for solving other engine issues.

Key Features:

  • Restore old and broken gaskets and seals
  • Mixable with all engine oils
  • Doesn’t contain any harmful substances
  • Minimize oil consumption and engine noise

Final Opinion:

If you want a specialized oil additive to prevent engine oil leakages and rejuvenates gaskets, then this pack is for you.

5. LM 1005 Oil Leak Stop 300 ml

LM 1005 Oil Leak Stop 300 ml
If you have already fond of the Liqui Molly brand and can rely on it, then there is an outstanding collection from Liqui Molly, which is German-based oil additives.

Whatever the age of your vehicles or mileages, LM stop oil leaks restoring the valve seals immediately after application. I mean, it takes immediate action and stops oil leakages.

If you want maximum performance within a single bottle, you must add the additive after every oil change. However, mixing with old oil produces a less significant result.

LM makes sure plasticizer chemistry so that it ensures maximum flexibility to the broken gaskets.

Feature We Like Most:

LM oil leak stop provides a multi compatibly with a different oil in the market. From conventional oil to synthetic, you can use the additive with all of them.

Probable Drawbacks:

This is not suitable for metal, cork, or paper seals.

Key Features:

  • Compatible with most vehicles’ oils
  • The plasticizer ensures better flexibility
  • Provides better performance after fresh oil change
  • Works for all gasket and valve seals

Final Opinion:
To get the maximum flexibility on the engine’s gasket, LM would provide the best plasticizer additives.

FAQs – Frequently Asked Questions & Answers

Best Oil Additive For Valve Seals

Q. Can I add Liqui Molly to a fresh oil change?

A. Yes, you can. In fact, you will have the optimum result if you add the best valve seal additive to the engine after every oil change.

Q. Does oil stop leak additives prevent engine knocking sounds?

A. Yes, it does. Though these additives are designed to restore valve seals, it also works to prevent oil consumption, noise reduction, and so on.

Q. How long does the additive take to stop leakages?

A. It depends on the vehicle type. However, if you mix the additive with the old oil, then it takes a little longer time to work. However, the additive works quickly on the fresh oil change and takes 2-3 hours to start working.

Q. Can I pour the oil leaks additive into semi-synthetic oil?

A. Yes, you can. Generally, stop leak additives are engineered in such a way that they can be mixed with most of the engine fluids such as gear oil, conventional/synthetic oil, hydraulic oil, and other fluids.

Q. How can I choose the best oil additive for leaking valve stem seals?

A. There are some specialized oil additives only engineered to stop engine oil leakages. First off, you must look at this feature and confirm the pack.

Final Words

Now you may get rid of your eternal oil leak problems as you have come across some of the best oil additive for valve seals. After using the additives, the gasket will restore to its original form and make sure low oil consumption and prevent other engine issues.

Therefore, choose your preferred stop leak additives and enjoy the seamless performance of your vehicles.

Also Check:

1. You may also like some of the Engine Compression Additive from our list.

2. For more must-have products Oil For Direct Injection Turbo Engines.

3. Our guide to the Gear Oil Pump.

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