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Best oil additive for older engines

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Do you own an old car? Do you want to keep the engine running longer? we will be discussing the Best oil additive for older engines, to keep it running longer

If you answered yes to any of the following questions, you’ve come to the correct spot. Putting an oil additive to your motor oil will further extend its life, but will also address all of the irritating problems that come with a high mileage car.

In case you didn’t know, an oil additive can be applied in conjunction with 100% synthetic oil. But there is a lot to choose from. But we’re here to assist, so check our evaluations for the best oil additives for older engines for your car to guarantee you make the right decision.

Oil is, unsurprisingly, a crucial component in the correct operation of any engine. It lubricates moving components, minimizes friction, and, to the greatest extent feasible, eliminates wear and tear produced by continual usage.

When employing the best oil additives for older engines, it is critical to select a high-quality product with a track record of success. This is because installing the incorrect components in your automobile engine will almost certainly result in exorbitant repair expenses or, worse, engine replacement.

Your engine has undoubtedly served you for several thousand kilometers, and its internal parts have begun to show signs of wear.

Moving components such as the crankshaft, pistons, valves, and camshafts, among others, are no longer perfectly fitted within the engine head or block.

Your automobile has lost compression, resulting in decreased performance and fuel economy.

While an oil addition will not restore fading paint or repair damaged car upholstery, it will keep you running by lubricating all of your vehicle’s functioning components and avoiding future wear and tear.

You keep going for more and easier as if by magic.

What should you know about oil additives? Which companies have the best commercial reputation?

Learn all you need to know in our guide on the best oil additives for older engines!

#1 Hot Shot’s Secret FR3 Friction Reducer

Hot Shot’s Secret’s FR3 oil treatment uses three proprietary lubricants, including a particular nano lubricant, to minimize wear and resistance inside your engine, hence the “3” in FR3.

Because friction causes heat, and heat causes wear, adequate lubrication is essential. The FR3 Friction Reducer uses a unique mixture to smooth engine surfaces and produce a lubricating protection coating for your engine.

What is the ultimate result? Increased efficiency and productivity. Third-party testing has indicated that the FR3 Friction Reducer increases horsepower and fuel economy by up to 5% while decreasing engine wear by nearly half, or up to 43%.

That implies you’ll not only receive a better-performing engine, but also one that will last longer. FR3 Friction Reducer is produced in quantities ranging from 8 oz to 5 gallons that can be used in both diesel and petrol cars.

Every oil change should include one FR3 treatment, according to the manufacturer.

Reviewers claim a quieter idle and smoother ride after using FR3 Friction Reducer, as well as a significant change in performance, but if you’re still not persuaded, Hot Shot’s Secret backs their products with a money-back assurance.

  • Boosts horsepower and fuel efficiency
  • Reduces engine wear
  • makes the engine idle more smooth
  • Includes a money-back guarantee
  • Recommended every time you change your oil

#2 Sea Foam sf-16 Motor Treatment

One of the best oil additives for older engines is the Sea Foam sf-16 Motor Treatment.

The product is packaged in a simple and easy-to-use kit. Sea Foam offers a top-of-the-line additive solution for 2-cycle and 4-cycle engines. Cars, trucks, ships, tractors, and even tiny engines can benefit from the enhancer.

The formula is made entirely of pure hydrocarbons. It’s made to liquefy gum buildup and varnish deposits.

Internal engine pollutants will also be removed and reduced by the formula.

The Sea Foam sf-16 Motor Treatment is approved by the PEA and the EPA.

The additive can be injected directly. It works well with older engines with over 250,000 miles on them. For older vehicles, the oil additive improves performance substantially.

The engine is also smoother and has less drag, according to drivers. The formula is equally effective for gas engines with problems. sf-16 Sea Foam Small engines might benefit from Motor Treatment as well.

The product’s sole flaw is that it is thought to be less beneficial for ethanol gas problems.

You should also only apply the oil additive if your vehicle has completed at least 5,000 kilometers. The formula is combustible; however, it does not react with oxygen.

The formula works in almost any diesel or gasoline engine, with older engines benefiting the most.

The benefits are evident after usage! Furthermore, if utilized appropriately and as designed, the device has almost no disadvantages.

  • This is ideal for older engines
  • Cost-effective product
  • Removes deposits and impurities from engines effectively
  • Certified by the EPA and the PEA
  • Flammable
  • Doesn’t address the issue of ethanol gas.

#3 XL Nanolube Engine Oil Additive and Nano Treatment

The XL Nanolube Engine Oil Additive is unusual in that it not only rinses your engine and improves fuel efficiency, but it also lowers oil burning and engine smoke by combining with and neutralizing any incorrect combustible materials in your engine.

The XL de-toxifies your car and gives you immediate benefits. It offers your car greater power while also saving you money by reducing your vehicle’s fuel consumption.

It’s also good for the environment since it eliminates any engine contaminants that cause hazardous emissions.

With only one bottle of Nanolube in your engine, you can coat all of your vehicle’s working metal components with a non-drip Nano-film, thereby preventing dry start damage. Nanolube never heats nor burns.

It prevents your motor oil from burning owing to constant extreme heat within the engine and keeps it cold at all times once combined with oil.

As a result, with this oil additive, you may eliminate two of the most common causes of engine aging: oil combustion or heating up to extremes within the engine, and dry start problems!

Furthermore, because an engine detox is included in the XL Nanolube, your engine is protected against rusting permanently and stays that way whether you run your car or not.

  • All engines and oil types are suitable
  • Conforms to all metal parts and does not drop
  • lowers the temperature within your engine
  • working metal parts rust-free for as long as you own it!
  • increases your vehicle’s fuel efficiency

    #4 Marvel MM13R Mystery Oil

    Marvel MM13R Mystery Oil was utilized on aircraft and battleships during WWII, which may surprise you. This firm was founded in Chicago, Illinois, in the year 1923.

    Marvel acquired prominence by publicity in an era when there were no technical ways of marketing the product.
    It’s still one of the best oil additives for older engines because of its efficacy in addressing a variety of engine problems.

    If you’re wondering how to utilize this product with an older car that already has engine oil, Marvel advises changing 20% of the motor or engine oil with this product.

    For example, if your engine’s motor oil volume is 5 quarts, mix one quart MM13R Mystery Oil with four quarts of conventional motor oil.

    MM13R Mystery Oil can assist you to get away from the bothersome difficulties that every other car owner has to deal with, whether you use traditional or full synthetic motor oil.

    This engine oil additive works well in older automobiles that have a lot of issues.

    Simply replace 20% of the motor oil with this mystery oil if your engine fails to hold oil for even more than a week or the carburetor makes a peculiar ticking noise.

    It minimizes friction, improves fuel efficiency, and ensures that all of the engine’s components are in good working order.

    • Prevents sludge formation in the engine
    • Improves your older engine’s performance
    • Diesel and petrol engines are both compatible
    • There will be no more odd ticking noises
    • It’s a little more expensive than similar items

    #5 Rislone Engine Treatment

    It’s not unusual for a car with more than 75,000 miles on the clock to generate weird ticking noises or have undetected moving components within the engine.

    An aging engine is prone to a variety of additional issues. If you have a car like this, we suggest Rislone Engine Treatment, which is the finest oil additive for older engines.

    Additionally, you do not need to wait until your next oil change. You can apply this oil additive whenever you wish.

    Furthermore, the company promises that as soon as you install and start driving the car, the oil additive will begin to solve the problems.

    The creators of this device recognize how difficult it may be for a car owner to tune up their vehicle on their own.

    Taking your car to the repair or lube shop may be costly. This tried-and-true low-cost option allows you to do all engine tune-up tasks in your garage. It’s also extremely cheap.

    This oil addition begins to combine with the engine oil as soon as it is installed, regardless of whether you use traditional or synthetic oil.

    The interior metal parts of an older engine are more prone to develop varnish, sludge, and gum deposits.

    This oil additive aids in the cleaning and removal of deposits from older engines.

    We believe that it may not be feasible to get a completely contaminant-free engine, but you can strive to limit contaminants to a minimum.

    For individuals who don’t want to spend time tuning up their car, Rislone Engine Treatment is one of the greatest ready-to-use oil additives.

    Furthermore, not everyone is a vehicle enthusiast. Not everyone devotes time to learning and comprehending automobile maintenance.

    In the automobile repair and maintenance sector, there is a common need that Rislone is serving.

    • The longevity of an older engine is increased
    • minimizes friction
    • simple to use
    • Increases performance
    • works with automobiles that have a lot of miles on them

    #6 Archoil AR9100 Oil Additive

    The oil additive is designed for use in a variety of engines. It works with gasoline and diesel engines, as well as hydraulics, transmissions, power steering, and discrepancies.

    However, before ordering Archoil AR9100 Oil Additive, we recommend double-checking vehicle compatibility. The oil additive can be used with both powertrain oil.

    Any mineral synthetic oil will work with AR9100. Nanoborate is a chemical found in Archoil AR9100. It’s an ester and a mild detergent that cleans the engine by dispersing impurities.

    The formula’s cleaning powers will remove any degree of carbon deposits or sludge from engines. The mixture works best when you replace your oil regularly.

    The booster is beneficial in a variety of ways. The addictive is excellent in reducing friction as well as heat. We also observed a substantial improvement in engine performance.

    The additive will also help to increase the life of engine parts by reducing wear. In particular, in cold conditions, the Archoil AR9100 Oil Additive protects an engine.

    It also guards against the occurrence of a dry start. Users will benefit from more power and better fuel economy. In addition, the car should create less heat.

    It is more effective at sealing than many other oil additives. The amount of blowby generated by piston rings is negligible.

    Archoil AR9100 also reduces engine pressure and protects against corrosion-causing chemicals. For injectors in older automobiles, the formula is ideal.

    It will surely get rid of any stagnation in engines when they are cold.

    Keep in mind that while the oil additive is suggested for all engines, it may not be compatible with certain.

    Before applying the additive, be sure to consult your vehicle’s owner’s handbook.

    Archoil AR9100 Oil Additive is a fantastic oil additive that not only lowers but completely removes engine oil deposits and rust. As a result, the ride is quieter and smoother.

    • Engine deposits are reduced
    • Reduces the amount of noise
    • Dry beginnings are no longer an issue
    • compatible with both petrol and diesel engines
    • It’s possible that not all car models will function

    #7 Liqui Moly (20002) Cera Tec Friction Modifier

    Liqui Moly’s oil stabilizer is a German-made product. The company has received several major awards for developing unique and cost-effective automobile lubricants.

    This product was named one of the best oil additives for older engines in the world by subscribers of the German magazines “Auto Motor und Sport” and “Auto Zeitung.” Give Liqui Moly Cera Tec Friction a try if you’re attempting to resuscitate an old beat-up engine.

    The main goal of this product is to decrease friction between both the metal components of the engine. Fuel efficiency improves automatically when friction and wear are reduced.

    The metal parts of an engine suffer increasing harm the more you use it without adequate maintenance and care.

    The clever magnetic particles in Liqui Moly Cera Tec Friction connect with the metal components within the engine.

    In this manner, even when the vehicle is switched off, the engine oil additive continues to function– it operates 24 hours a day, seven days a week.

    The magnetic particles attaching to the surface of the metal reduces friction and enhances the engine’s overall quality. Furthermore, the particles shield the metal from everyday wear and tear.

    This Liqui Moly oil additive is excellent for people who have a loud engine. Your older car will almost probably have acquired some damage over the years if you’re not using an oil additive or a stabilization material before.

    You must pour the whole 300 ml container of Liqui Moly Cera Tec Friction into the tank to quiet or smoother for an older engine. You should see some positive effects in a few days.

    • Improves performance within a week after insertion
    • Gasoline and diesel engines are both compatible
    • Even in inclement weather, it manages to perform at its peak.
    • Only compatible with fresh engine oil
    • Before using the container requires a good shake

    #8 Bg MOA Part # 110 Engine Oil Supplement

    One of the most intriguing oil additives we’ve looked at is Bg MOA. It can be used with synthetic or natural oils.

    However, because the manufacturer does not offer particular oil standards, we recommend double-checking the owner’s handbook to ensure that your make and model are suitable.

    An aftermarket provider created this oil additive. However, we wish to ensure that this doesn’t deter you from choosing the Bg MOA Engine Oil Supplement, which is a fantastic product.

    Even when engines are subjected to high temperatures, the preventive additive protects them. The recipe was created specifically to combat overheating engines.

    The components initially help to prevent oxidation in the engine. The frequent use of stop-and-go driving has been linked to oxidation.

    The substance not only keeps engine oil from liquidating but also prevents it from thickening over time, which allows components to work harder.

    While Bg MOA Engine Oil Supplement is beneficial in warmer areas, cooler conditions should be avoided.

    The outcomes were mixed, but we did observe a little drop in performance in very cold surroundings.

    It’s important to note right away that the oil additive won’t solve all of your engine’s concerns.

    It only helps when the engine is having trouble. When working with friction, we propose utilizing the formula.

    With older cars, the Bg MOA Engine Oil Additive tends to enhance results as wear and tear begin to appear.

    However, after the mileage reaches 1,000, we advocate utilizing it on new automobiles to ensure the functioning parts’ longevity.

    The Bg MOA Engine Oil Supplement lowers friction and loosened muck, but it provides little protection against rust or other issues.

    Both synthetic and non-synthetic oils can be used with the addition.

    • Affordable price
    • Protection in hot weather
    • Friction is reduced
    • Excellent for a wide range of engines
    • Only provides rudimentary protection


    The majority of automotive oil additives start by clearing sludge and detritus from the system. Cleansing the oil pan and pickup, as well as increasing oil pressure at the origin, are all part of this. The cleaning procedure also aids in the clearing of the oil’s route through the engine, resulting in improved lubricant at the engine’s high end. While we’ve taken into account all possible aspects to compile a safe list of the best oil additives for older vehicles presently available on the market, you should read through each thorough description to determine which one best suit your demands and produces the results you want.


    How often should we change oil in older engines?

    Your driving environment may influence how often you replace your oil. However, the accepted rule of thumb is that you should change your oil every 3,000 miles or three months, whichever comes first.

    Why do we need oil additives?

    When you replace the oil in your car on a regular basis using high-quality oil and the right filter, you’re helping to keep everything running smoothly. Unfortunately, engine oil, like certain internal engine components, degrades with time. As engine oil degrades, it burns and adheres to parts of the oiling system where temperatures are very high.

    Do Oil Additives Really Work?

    Oil additives do not function in the same manner as motor oil does. An oil additive’s main aim is to revitalize an aging engine so that it can run smoothly for as long as the components are lubricated and clean.