Best Diesel Oil Additive with Reviews, Buying Guide and FAQs

Most drivers know that frequent oil changes are important to preserve the life and performance of their car. For many people, changing the oil and filter every 3,000 miles is the standard, but developments in lubrication technology have resulted in oils that may safely be used for extended periods. Simply changing your oil on a regular mileage-based schedule can go a long way in ensuring that your vehicle works well for years, but there are easy ways to care for your engine internals.

If you compare oil additive brands that you can obtain now with the ones that were accessible earlier, you’ll notice a substantial difference. Modern oil additive is simply a blend of multiple oil base stocks and added components. Older ones were always based on pure petroleum, and they never included any extra substances.

All of these additives are useful in some manner, but there are enough to fill an entire aisle at your local auto parts store. That can lead to some confusion, especially among drivers who haven’t shopped for diesel oil additives before.

Best Diesel Oil Additive Comparison Table

Image Name Details Action
Archoil AR9100 Friction Modifier Value Pack - Two 16oz Bottles of AR9100 for Two Powerstroke Treatments Details Check Price
NanoRex Engine Oil Additive Enhancer for Commercial Vehicles 700 mL Bottle Details Check Price
REV X Stiction Fix Oil Treatment - Two 4 fl. oz. Bottles Details Check Price
Liqui Moly (20002) Cera Tec Friction Modifier - 300 ml Details Check Price
Red Line 81403 Engine Break-In Oil, 16 Ounce, 1 Pack Details Check Price
Diamond Nano-Lube by BestLine Racing - 12-oz Details Check Price
Motor Oil Additive, Heavy Duty Oil Stabilizer, Conventional, 1 gal Jug, Each Details Check Price
BG Advanced Formula MOA 115 Details Check Price
Opti-Lube XPD Formula Diesel Fuel Additive: 8oz 6 Pack, Treats up to 32 Gallons per 8oz Bottle Details Check Price
Restore (00012 6-Cylinder Formula Engine Restorer & Lubricant - 12.5 oz. Details Check Price

1. Archoil AR9100 Friction Modifier Value Pack - Two 16oz Bottles of AR9100 for Two Powerstroke Treatments

This multifunctional product works on either gasoline or diesel engines. A primary advantage of this additive is its general friction-fighting qualities. It generates a durable coating over essential systems. Users with non-Ford automobiles can experience progress as well. This addition can assist with automobiles that have problems starting in cold weather, too. You won’t have to wait long either—it takes action fast after therapy.

It incorporates dispersants to better circulate in your oil. The accompanying detergents can also clean varnish, sludge, and other debris out of your engine. As long as you use it at every chance, it will maintain general cleanliness. You may use this mixture for more than just your engine oil. Almost each car owner may make use of this device in one way or another.


  • 16 ounces is the capacity of the bottle (different sizes are also available).
  • Engines running on gasoline and diesel are compatible.
  • It is possible to combine it with synthetic or traditional oils.
  • Can also be used on transmissions, power steering systems, hydraulics, and differentials, among other components.
  • Works swiftly.
  • Solves start-up difficulties.
  • Specific for Ford power stroke engines. Quiets noisy machines.
  • Not inexpensive if used at every oil change.

2. NanoRex Engine Oil Additive Enhancer for Commercial Vehicles 700 mL Bottle

XL Nanolube works on four and six-cylinder automobiles of all ages. You may even treat bigger engines, such as those in generators and boats. Treating your engine with XL Nanolube can increase performance in vehicles designated as high mileage. The contents comprise chemicals to condition old seals and stop oil leaks. Strong detergents in the recipe help eliminate tenacious sludge build-up in older autos. The nanoparticles generate a surface coating over moving components to minimize friction. For modern automobiles, it can serve as a preventive measure. If engine sounds have been bugging you for a while, you’ll welcome XL Nanolube.

It can silence banging, harsh idling, and other noises associated with older automobiles. Even persistent, years-old sounds can be muted. By fully cleaning out your engine, XL Nanolube can help minimize exhaust pollutants. XL Nanolube acts to stabilize oil and slow down natural degradation. If you’re not quick with your modifications, this remedy will cover for you.


  • The capacity of the bottle is 8 ounces.
  • All gasoline and diesel engines are compatible with this product.
  • All types of motor oil are compatible with this product.
  • Slows oil deterioration.
  • Effective on high mileage automobiles.
  • Silences harsh idling, tapping, etc.
  • Easy to use on modern automobiles.
  • Stops leakage.
  • The advice for older or high mileage automobiles is time-consuming.

3. REV X Stiction Fix Oil Treatment - Two 4 fl. oz. Bottles

REV-X Stiction is a concentrated product. You may treat up to 12 gallons of oil using the two bottles. This treatment is suited for any diesel or gasoline engine. Stiction may be the root of a range of annoying situations. This includes hard starts, loss of horsepower, and higher fuel consumption. Users dwelling in places with cold winters might select this brand. With frequent treatment, it’s a strong weapon against the dreaded cold-start. This chemical is rich in lubricants to combat stiction-related troubles. There aren’t any potentially dangerous chemicals in REV-X Stiction Fix. This makes it an ideal alternative for worn-out or delicate engines. If you’ve observed a considerable decrease in horsepower, dirt might be the offender.


  • Bottle capacity two 4-ounce bottles are included in the package.
  • All gasoline and diesel engines are compatible with this product.
  • Can be used to treat a variety of lubricating fluids (e.g. hydraulic fluid).
  • Slows oil deterioration.
  • Effective on high mileage automobiles.
  • Enhances performance.
  • Easy to use on modern automobiles.
  • The suggested treatment approach for older or high mileage automobiles is time-consuming.

4. Liqui Moly (20002) Cera Tec Friction Modifier - 300 ml

This Friction Modifier is gasoline and diesel compatible. Unlike some other products, it works as well with both kinds. This concentrated material is good for all sorts of motor oil. This oil additive features significant anti-friction ceramic ingredients. These friction-reducing chemicals attach to the surfaces in your engine. If you take a look inside beneath the hood, you’ll be able to see the outcomes. Liqui Moly 20002 will leave a noticeable gloss on the interior workings.

It’s touted to persist for a little over 30,000 miles, even if you don’t opt to re-apply Liqui Moly. Once it’s adhered to your motor’s mechanics, it stays in place. Particles won’t break off with time or end up clogging your oil filter. This stuff isn’t simply superficially effective. Aside from smoothing outperformance, it can prevent occurrences of overheating. Vehicles under regular stress can benefit from the durability of Liqui Moly 20002. You’ll experience improvement in vibrations and noisy idling. This hard-wearing material is especially suitable for preventative upkeep for new autos.


  • The capacity of 10 ounces.
  • Engines running on gasoline and diesel are compatible.
  • All types of motor oil are compatible with this product. Pumps, transmissions, and compressors are all capable of being treated.
  • Concentrating a little goes a long way.
  • Treats automobiles under stress.
  • Improves miles per gallon.
  • Quiets engine noise.
  • Cools down overheating.
  • Can’t be utilized on wet-clutch autos.
  • Takes time for results to show

5. Red Line 81403 Engine Break-In Oil, 16 Ounce, 1 Pack

As the name says, this product is developed for engines that require breaking in. Rebuilt engines demand a new approach in terms of upkeep. Parts like the valve train or camshaft might incur damage during the breaking-in process. Red Line contains protective chemicals, such as zinc and phosphorus. It will also act to regulate temperature, which will in turn lessen the risk of overheating. Antique autos and older high mileage vehicles can benefit too.

This material also has detergent components. When you change your oil, you’ll notice that it’s cleaner than usual. The detergent and friction-reducing qualities will enable smoother performance. Another advantage of Red Line is the concentrated amount. The 16-ounce bottle will last you for up to two changes.


  • The capacity of 16 ounces
  • All gasoline and diesel engines are compatible with this product.
  • All types of motor oil are compatible with this product.
  • One bottle can last up to two oil changes.
  • Appropriate for ancient automobiles.
  • Can be used on older high mileage automobiles.
  • Protects interior parts from further wear.
  • Results may not be immediately visible.

6. Diamond Nano-Lube by BestLine Racing - 12-oz

This all-synthetic mixture is a complete treatment for your car. It may tackle some issues in roughly used and older automobiles too. A stand-out aspect of the BestLine treatment is that it serves as a type of cooler. The additives are attracted to the hottest parts of the operation, cooling them down which decreases heating difficulties. All the internal workings of your engine will be sheltered from friction. Noises during operation and start-up will cease. You won’t have difficulties starting older automobiles when the temps drop. Repeated cold-starts can wreak harm over time, thus this is a fantastic advantage. Aside from being performance-enhancing, fuel efficiency will increase. You can apply this additive in preparation for a lengthy journey to conserve petrol.


  • The capacity of 16 ounces.
  • Gasoline engines are compatible with this product.
  • All types of oil, Except for Toyota brand lubricants, are suitable.
  • Significantly increases fuel economy.
  • Protects components from friction wear.
  • Quiets most engine sounds.
  • Can’t be used with Toyota oils.
  • Not compatible with diesel engines.

7. Motor Oil Additive, Heavy Duty Oil Stabilizer, Conventional, 1 gal Jug, Each

This product can manage a range of age-related issues. Excess oil consumption is a prevalent concern with older automobiles. The bigger a motor is, the thirstier it might grow as it matures. This stabilizer can keep oil in your car for longer. It’s also intended to reduce deterioration, so you may lengthen the period between replacements. The components also contain conditioning agents. If you’ve discovered mild to severe oil leaks, Lucas’s heavy-duty stabilizer can seal them up. It thickens oil to compensate for gaps or tiny leaks in older engines. You’ll also notice increased oil stability following treatment. This device will also mute bothersome engine noises. As our vehicles become older, they’re going to produce at least some noise. Whether you’re hearing the occasional knock or a multiplicity of noises, Luca’s heavy-duty oil stabilizer will smooth things out.


  • The bottle has a capacity of one gallon.
  • Engines running on gasoline and diesel are compatible.
  • It prevents dry starts from occurring.
  • Extends the duration between oil changes.
  • Slows oil consumption in thirsty automobiles.
  • Great for antique and heavy usage automobiles.
  • Smooths out age-related sounds.
  • Balances oil pressure.
  • It may not work with lighter synthetic oils.
  • Not suited for smaller automobiles.

8. BG Advanced Formula MOA 115

If friction is your problem, the BG Moa supplement could be perfect for you. It’s a potent lubricant that addresses and avoids friction-related concerns. You may utilize BG Moa for preventative or active treatment which is needed by an older automobile. A fantastic advantage is that it may quiet or silence ticking. Whether your tick is due to a lack of lubrication or chilly temperatures, this lotion can assist. It’s also great for those who have been operating their automobiles with little oil. If you’ve acquired an older vehicle that hasn’t been cared for, BG Moa is a wonderful alternative. Lubrication isn’t the only advantage you’ll gain. The recipe is also high in detergents to rid your engine of filth, sludge, and debris. It protects your oil to prevent damage between changes. This will help minimize dirt collection and avoid rusting. As you may assume, your motor performance will increase. A clean, well-lubricated engine will operate smoother and quieter than a filthy dry one.


  • The capacity of the can is 11 ounces.
  • Engines running on gasoline and diesel are compatible.
  • All types of motor oil are compatible with this product.
  • Excellent lubricant.
  • Smoother overall engine performance.
  • Quiets cold-weather ticking.
  • Works better with traditional rather than synthetic oils.

9. Opti-Lube XPD Formula Diesel Fuel Additive: 8oz 6 Pack, Treats up to 32 Gallons per 8oz Bottle

After a while, the oil additive you use in your diesel engine is certain to get depleted of the critical additives that enable it to perform optimally in your vehicle's engine. During their duties, these additives are lost, and they must be replaced at some point. Increased amounts of viscosity improver, dispersion, anti-wear, and anti-friction agents are provided by XPD, which includes all of the required ingredients to do so. Combined, these measures will improve the ability of your motor oil to preserve your engine from the weather while also enhancing its performance.


  • This product is intended to enrich motor oil with an additional quantity of additives.
  • Increased concentrations of detergent/dispersant are available.
  • Anti-wear and anti-friction agents, as well as viscosity improvers
  • Compatible with all engine types.
  • Protects engine.
  • Improves performance.
  • Enhances lubrication.
  • Has to be added every oil change for it to benefit the car

10. Restore (00012 6-Cylinder Formula Engine Restorer & Lubricant - 12.5 oz.

Having a car with an engine that has a lot of miles on it means that it is probably not as powerful as it was when you first purchased the vehicle. In your engine's block, every time a piston goes up and down in the block, microscopic scores are formed in the cylinder walls and the piston rings. These little scuffs can accumulate over a hundred thousand miles and become a significant issue, lowering compression levels by as much as 25%. It's a good thing that Restore Engine Restorer & Lubricant may help you regain some of that lost strength! Even under tremendous pressure, this advice can be used to repair the small grooves created during the combustion process.

Consequently, high-boost applications may be accommodated by using this Engine Restorer & Lubricant product. As a bonus, the substance covers everything, allowing it to repair existing faults while also helping to prevent further harm in the future.


  • Compression is increased in older engines with a lot of miles on them.
  • The patented CSL compound fills up worn sections of the cylinder walls, reducing blow-by and RESTORING compression to levels that are close to the original.
  • Restores cylinder compression by enhancing combustion, resulting in a rise in horsepower, a reduction in oil consumption, a greater gain in fuel efficiency, and the restoration of peak engine performance.
  • Restores performance in older engines, replacing expensive engine construction projects
  • Some consumers report that the device doesn’t operate properly on engines with variable valve timing.

Best Diesel Oil Additive Buying Guide:

Well, if you feel indecisive about what type of fuel would be best suited for your vehicle then there are some important things to know best diesel oil additive Here they are.

Viscosity Modifiers

Oil’s viscosity frequently falls under extremely high temperatures. As a result, the oil’s capacity to lubricate the moving parts correctly declines as well. That’s why an oil additive plays such a crucial function here. Whether it’s hot or cold, viscosity modifiers can assist the oil to retain its viscosity under severe temperatures.

Rust Inhibitors

Rust inhibitors are essentially polar elements that attach to the metal parts and surfaces and form a protective coating. They are particularly powerful against corrosion, which is what makes them vital.


Keeping a metal surface free from any pollutants that might cause harm in the long term (such as soot) is also vital. That’s where dispersants come in. Dispersants simply attract the molecules from these pollutants, and as their name indicates, spread them. The molecules end up in the suspension system in the oil film.


Detergents are fairly similar to dispersants, but the main difference is that they keep the metal surface clean from deposits. These deposits normally occur in the engine environment, and it’s necessary to remove them. Detergents simply neutralize the acids that are present in the oil by making them soluble enough to be taken up into the oil film.

Pour Point Depressants

The lowest temperature at which the oil flows is often called the ‘pour point.’ What pours point depressants do is restrict the production of wax crystals in mineral oils. These wax crystals can impair the fluidity of the oil, which might create issues during engine start-up. That’s what permits a car to start amid extremely cold conditions.

Anti-Foaming Agents

When it comes to the creation of bubbles and foam in the oil, there’s no better remedy than an anti-foam agent. Anti-foaming additives minimize the oxidation of the oil and boost its lubricating characteristics.

Friction Modifiers

Friction modifiers have one basic objective — to minimize (and potentially erase) any traces of friction in the engine. The outcome of such an operation is that your engine doesn’t burn too much gasoline.


Oxidation happens when oil interacts with the oxygen in the air. Alternatively, oxidation might be triggered by forms of bubbles and froth in the oil, as I explained earlier. In both circumstances, there’s a potential that organic acids will occur, which is not healthy for the oil. They enhance the oil viscosity and encourage the creation of varnish, corrosion, and sludge. Antioxidants are an antidote for it.

Anti-Wear Additives

The only aim of an anti-wear additive is to minimize and avoid contact between the metal engine components.

Best Diesel Oil Additive FAQ:

Can oil additives boost oil pressure?

Yes. Most additives can boost oil pressure, but only momentarily. If your car is displaying indications of low oil pressure, it might be a sign there are major engine concerns that should be handled by contacting a repair.

Can oil additives ruin my engine?

Oil additives shouldn’t create any engine troubles, as long as you select a product that’s intended to operate with the sort of oil your car requires. Some additives are general, but others might be more specific, so make sure to double-check the suggested use situations before figuring out which one you’ll use.

Can you combine various oil additives?

It isn’t a good idea to combine various oil additives. Stick to only one and put only that one in your engine’s oil. Using various additives together in the same oil can promote oil deterioration, which in turn can have detrimental impacts on your engine and other vehicle components.

What is the difference between an oil additive and an engine treatment?

Some additive marketers argue “it isn’t an oil additive, it’s an engine treatment”. They aren’t an “additive” according to industry definition, solely because they are not put in a large enough volume to reach a magical proportion where they “officially” become an “additive”. Therefore, they chose to label them an “engine treatment. Every engine oil’s additive package acts on a “micro” or “nano” level and treats the surface of the metal exactly like an engine treatment or oil additive.


You may have all of these advantages while still paying a reasonable price, and the best thing is that adding an oil additive to your fuel is a simple process. You don't need any special knowledge to Learn more about the best diesel oil additive. To get started, all you need to do is locate an additive that works for you and experiment with it. However, keep in mind that these compounds are analogous to health supplements for your automobile in terms of effectiveness and safety. When anything is absent or has to be supplemented, it will only function. This means that they will not work with all vehicles. In contrast, practically any motorist who chooses the proper oil additive will notice an increase in engine performance in their car.

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About The Author

Jhony Thomas

Jhony Thomas is a freelance writer and editor who specializes in technology reporting and reviewing. He works out of the suburban New York City area. He has drivers Education and safe driving enthusiast. In the sense of car knowledge, he has the most powerful knowledge about car accessories, engine, information, news, tools and technologies. He can appreciate people to know about the car knowledge.