The 10 Best Synthetic Oil Additives (2022 reviews)

synthetic oil additives
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If you are looking for collection of best synthetic oil additives, Your search ends here.

Our review process:

Our Top Picks:

Best Overall:
Buy: Lucas Oil Synthetic Oil Additive
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Best For Use With Synthetic:
Buy: Lucas Synthetic Oil Additive
READ REVIEW

Best For Zddp Additive:
Buy: Hyper Lube By Rislone Synthetic Oil Additive
READ REVIEW

Best For Older Engines:
Buy: Liqui Moly Synthetic Oil Additive
READ REVIEW

Best For Engine Repair:
Buy: Bestline Superior Lubricants Synthetic Oil Additive
READ REVIEW

Best For Lifter Tick:
Buy: Tribotex Synthetic Oil Additive
READ REVIEW

Best For Small Engines:
Buy: Bars Leaks Synthetic Oil Additive
READ REVIEW

Best For Non Roller Rocker Arms:
Buy: Zddplus Synthetic Oil Additive
READ REVIEW

Best For Gas Mileage:
Buy: Slick 50 Synthetic Oil Additive
READ REVIEW

Best For Noise:
Buy: Bitron Synthetic Oil Additive
READ REVIEW

Best Overall: Lucas Oil Synthetic Oil Additive

Lucas Oil Synthetic Oil Additive
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Here, we review an additive that manages to win our hearts. It's the Lucas Oil Synthetic Oil Additive and it's widely considered as one of the best additives you can buy. The lucas oil synthetic oil additive price is good, provides great value and it is great for transfer cases. Manufacturer says: Browse our exclusive collection of auto accessories that includes top quality products to enhance the style, comfort and functionality of your vehicle. Moreover, this is designed for a great price and it allows for light enough for an import.

The additive is used for great products and it does the job. Most importantly, the lucas oil synthetic oil additive comes with great stuff, is good for good oil and it is made for good stuff.

Most buyers quickly discovered that the additive is used to protect new and used heavy duty and high performance transmissions, gear boxes and engines. Moreover, a few strongly agree that the additive is used to drive uber part - time (not anymore) 6-7 hours of idelin/stop/go/traffic in the heat of florida. Also, a few strongly agree that this ' synthetic " stabilizer works with vehicles requiring synthetic oil. With no doubts, this additive passed the test and had very satisfied buyers eager to share their experience.

Top Customer Quotes:
  • This is very good use every motor.
  • This is better than Lubro moly motor oil saver.
  • This reduces friction for increased power and mpg.
  • This reduces oil consumption, plus it is like alien slime haha.

Best For Use With Synthetic: Lucas Synthetic Oil Additive

Lucas Synthetic Oil Additive
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The Lucas Synthetic Oil Additive's high-end materials make sure that it ages well with use. The lucas synthetic oil additive is used to protect new and used heavy duty and high performance transmissions, gear boxes, and engines. Make sure this fits by entering your model number. And, it is cheaper than stores and it allows for light enough for an import.

Lastly, the lucas synthetic oil additive comes with great stuff and it is good for your country of origin.

Almost all customers found that the additive works well so far that it reduces oil consumption. And, a few strongly agree that the additive is synthetic for one is also much thinner and not as thick as the original. Moreover, they say that the additive will leak or not since it blends with the oil all ready in the car. To sum up, the tone of buyers is very positive and we believe that the additive suits the purpose.

Top Customer Quotes:
  • This is used to help older cars.
  • This burns maybe 1qt per thousand miles.
  • This provides excellent all around wear protection and break - down coverage.
  • Use with synthetic and non-synthetic oils.

Best For Zddp Additive: Hyper Lube By Rislone Synthetic Oil Additive

Hyper Lube By Rislone Synthetic Oil 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 Hyper Lube By Rislone Synthetic Oil Additive is exactly that - it's a simple additive that hits all the right notes. The hyper lube by rislone synthetic oil additive reduces piston scuffing to add to that reduces friction and wear, especially at start-up, helping to eliminate dry starts. Manufacturer says: Follow the growth of the Rislone company below and learn about some of our favorite highlights from our long history. In addition, the additive works with part numbers and it is perfect for small engines.

Lastly, the hyper lube by rislone synthetic oil additive comes with great stuff, is industrial and it has one bottle.

Most buyers opine that the additive is designed for flat tappet four stroke engines, so if that describes your ATV engine, then yes. Further, a few strongly agree that the additive is superior to any conventional motor oil and additives that you can buy. Moreover, a few say that this additive has zinc which has an anti - wear property. In short, the tone of buyers is very positive and we believe that the additive suits the purpose.

Top Customer Quotes:
  • This is designed for an sg api service ratiing.
  • These are at a nice price and it is worth the money.
  • We will come up with something for new vehicles soon.
  • This has zinc keeping that old engine running as intended.

Best For Older Engines: Liqui Moly Synthetic Oil Additive

Liqui Moly Synthetic Oil Additive
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The Liqui Moly Synthetic Oil Additive's material feels more premium than its price would suggest. The liqui moly synthetic oil additive is efficient, is best for good results and it has add one bottle. You will be surprised at how much better your engine sounds and how controlled it will be even at very high rpm. Moreover, this is made by liqui moly, not just lying around.

The additive is incredible and it is good for good oil. Above all, the liqui moly synthetic oil additive comes with over 4, 000 products relating to motor and transmission oils, fuel and oil additives, vehicle care, chemical repair aids as well as service products, adhesives and sealants, Liqui Moly offers a globally unique range of absolute top quality.

Almost all customers agree that the additive can be added to engine oil at any time. In addition, a few also found that the additive protects the engine parts. Moreover, they strongly agree that the additive will let it flow better. With no doubts, this additive passed the test and had very satisfied buyers eager to share their experience.

Top Customer Quotes:
  • This works for rides that burn oil.
  • This can reduce the effectiveness of the additives.
  • This has the color and consistence of silver paint.
  • This reduces friction but it is not an engine cleaner.

Best For Engine Repair: Bestline Superior Lubricants Synthetic Oil Additive

Bestline Superior Lubricants Synthetic Oil Additive
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If you often find yourself scrambling for an appropriate and satisfactory additive, bestline superior lubricant synthetic oil additive is your end point. The most superior lubricant, synthetic oil additive, comes with great stuff, changes the oil and it starts up noise. The Manufacturer says: If you are not satisfied with the bestline, we offer a 100% money - back guarantee. 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 takes more than an oil change every 3, 000 miles to keep cars, trucks, and motorcycles running smoothly. And, it can be used in bestline racing engine treatment formulas. Most importantly, the most superior lubricant, syntheticoil additive, is compatible with all types of motor oil and can be used in gas or diesel engines.

Almost all customers opine that the additive works well in any car. Also, a few strongly agree that the additive looks new even at oil change time. And, a few say that the additive looks like the prolong does a better job of lowering the engine metal parts friction. To sum up, buyers found this to be one of the best additives for daily purposes.

Top Customer Quotes:
  • This has treats internal components, works as advertised and it is made for good stuff.
  • This is universally compatible and it is designed for long - lasting engine.
  • This is better than any big brand name out there.
  • Take good care of your vehicle and it will take care of you.

Best For Lifter Tick: Tribotex Synthetic Oil Additive

Tribotex Synthetic Oil Additive
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Tribotex offers a variety of additives for personal choice and yet maintains quality in all the variants. The Tribotex Synthetic Oil Additive is a more powerful dose for bigger engines. Make sure this fits by entering your model number. Further, this reduces friction 10x better than engine oil alone.

Finally, the tribotex synthetic oiladditive definitely has better acceleration and it works very well.

Most buyers agree that the additive is recommended to reapply once a year if the engine is a daily driver. And, a few say that the additives are not as apparent as in older engines, so the difference is less perceived. Moreover, a few say that the machine uses the additive for 40, 000 miles. Overall, most customers found the additive suits best, and no one questions it.

Top Customer Quotes:
  • This actually helps increase the oil pressure at variable temps and rpm.
  • It is very quiet, is incredible and it is worth the money.
  • This definitely shows its age with how it performed.
  • This will stop smoking completely.

Best For Small Engines: Bars Leaks Synthetic Oil Additive

Bars Leaks Synthetic Oil Additive
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Compared with other additives in this category, the Bars Leaks Synthetic Oil Additive has a convenient design. The bars leak synthetic oil additive can also be used in heavy-duty applications as well as tractors, boats, rv's, motorcycles (including wet clutch), atv's, lawn equipment. Make sure this fits by entering your model number. Also, the additive comes with a part number and it is commonly.

The additive stopped the leak, changed the oil and it works for the rear main seal leak. Above all, the bars leak synthetic oil additive is that with a single application of the bar's leaked oil seal, those problems will be history.

Almost all buyers opine that the additive can be found at the following link. Moreover, they strongly agree that the additive will not help a catastrophic leak. Further, a few say that the additive will equal one quart of fluid as each bottle is a 1/2 quart. In short, for almost all buyers, Bars Leaks product was the most suitable.

Top Customer Quotes:
  • Before you know it, you're dealing with an oil - burning problem.
  • This is a rubber or metal gasket that will seal the seams.
  • This works very well and it is for small engines.
  • This is designed to work this way.

Best For Non Roller Rocker Arms: Zddplus Synthetic Oil Additive

Zddplus Synthetic Oil Additive
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The Zddplus Synthetic Oil Additive's superior materials makes sure that it ages well with use. The zddplus synthetic oil additive is easy to use, is made with great stuff and it is perfect for classic cars. Make sure this fits by entering your model number. Moreover, the additive changed the oil and it is made for good stuff.

Above all, the zddplus syntheticoil additive is an oil supplement that contains very high concentrations of the well-known additive zddp (zinc dialkyl dithiophosphate), which has been the primary ep (extreme pressure) ingredient in all quality motor oils for over 70 years.

Almost all buyers opine that the additive is great for restoring ingredients missing from modern motor oil. Moreover, they say that the additive does not matter what engine it is used in. In addition, a few also found that the old engines needed the zinc additive as today ’s oil is detergent free.

Top Customer Quotes:
  • This is what is termed a flat tappet valve train and yeah it needs zddp.
  • This is compatible with all conventional and synthetic oils intended for automotive use.
  • This is used to lubricate sliding metal to metal wear point in your engine.
  • Compatible with synthetic and conventional motor oils.

Best For Gas Mileage: Slick 50 Synthetic Oil Additive

Slick 50 Synthetic Oil Additive
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If you often find yourself confused about appropriate and satisfactory additive,s Slick 50 Synthetic Oil Additive is your solution. The slick 50 synthetic oiladditive is best for good results and it changes the oil. Make sure this fits by entering your model number. And, this is designed for ultimate performance and it is good for gas mileage.

The additive is running great and it has reduced emissions. Above all, the slick 50 synthetic oil additive is compatible with all types of motor oil.

Most buyers quickly discovered that the additive is a friction reducer, not a seal revitalizer. Further, a few say that the additive is nothing short of a miracle.

Top Customer Quotes:
  • Safe for all automotive gas engines, will not void manufacturers' warranties.
  • It has miles per gallon and it pulled into Bellingham.
  • It is time for a new car.
  • This is good for engines with oil pan without any interference with the clutch.

Best For Noise: Bitron Synthetic Oil Additive

Bitron Synthetic Oil Additive
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Next on the list, we've got yet another additive that manages to win our hearts. It's the Bitron Synthetic Oil Additive and it's widely considered as one of the most convenient additives you can buy. The bitron synthetic oil additive is efficient, has reduced engine noise and it can be recommended for good performance. If you’re dissatisfied with any product, you can return it risk - free. The Bitron oil additive is now the world leader in advanced vehicle engine power and protection. Most importantly, the bitron synthetic oil additive is good for gas mileage and it has proven engine efficiency.

Most customers found that the additive will loosen any frozen tool and is amazing stuff. Moreover, they say that the additives are good for the engine life of the vehicle. And, they say that the additive is used to have problems with the bearings wearing significantly early.

Why We Like This:
  • Make your vehicle last longer and keep it at peak performance year after year.
  • Best of all, satisfaction is 100% guaranteed and your results are risk - free.
  • The Manufacturer says: every purchase made with Bitron comes with our 90.