10 Best Engine Additive In The Us - Black Friday 2024

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Last Updated - November 23, 2024

Best Choice

1

Clicked 37 times in the last month

Liqui Moly
LiquiMoly 3721 Engine Oil Additive

9.9 Noise level

9.5 distance

9.3 worth the money

Why we love it

Single quantity ordering.

No extra charges.

Lightweight 0.8lbs.
Main highlights

Key Features
High thermal and dynamic load stability, deposit-free, compatible with all filter systems.

Ideal Use Cases
Perfect for environments requiring stable performance under high loads and temperatures.

Customer Praise
Most reviews highlight its exceptional reliability and compatibility with various systems.
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9.7

Exceptional

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Value for Money

2

zMAX
zMAX 51-011 - Engine & Fuel Formula Kit - Easy to Use - Reduces Carbon Build-Up & Lubricates Metal Extending Life of Car or Truck - Runs Efficiently, Improving Gas or Diesel Mileage - 12 oz. Each

9.9 Simple to use

9.5 distance

9.3 worth the money
Main highlights

Trusted By Professional & Dealerships: Stock zMAX in your garage to treat your car like a professional. From local repair shop mechanics to major car dealership groups, our formula is road tested and mechanic trusted. zMAX is eco-friendly and USA-Made!
Reputable Quality And Perfoamance: zMAX is proud to be the Official Micro-lubricant of Speedway Motorsports. Proven and trusted for over 80 years, zMAX helps save money at the pump and extends your engine’s life.
Fuel Conditioner: Pour zMAX Fuel Formula in the fuel tank to lubricate and maintain a clean fuel injector system. It improves fuel efficiency and performance and conditions the pumps and nozzles reducing carbon residue from the valves or pistons.
Extend The Life Of Your Vehicle: zMAX Engine & Fuel formulas are simple and easy to use. Micro-lubrication soaks into metal surfaces, which improves lubricity and reduces carbon deposit build-up while boosting performance and protecting vital vehicle parts.
Engine Efficiency: Add zMAX Engine Formula to gain efficient combustion resulting in more power. Use the engine treatment at your routine oil change or every 6k miles to reduce engine wear, lower emissions and keep your engine running smoothly.
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9.4

Excellent

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3

Liqui Moly
LIQUI MOLY Oil Additive Cera Tec 20002 Ceramic Wear & Tear Protection for Petrol & Diesel Engines Smoother Engine Performance, Less Friction & Lower Fuel Consumption 300 ml

9.5 Long life

9.3 worth the money

9.3 Noise level

Why we love it

Compatible with all motor oils and filter systems.

Performs well under extreme temperatures and heavy loads.

Reduces engine noise and improves fuel efficiency.
Main highlights

Mixable with All Motor Oils
Compatible with all commercially available motor oils, resists extreme temperatures, and maintains stability under high thermal and dynamic loads.

Ideal for High Mileage Engines
Perfect for vehicles with high mileage, improves engine smoothness, reduces noise, and enhances fuel efficiency in older engines.

Most Praised Feature
Customers frequently praise the significant reduction in engine noise and smoother engine performance after using the product.
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9.3

Excellent

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4

Liqui Moly
Liqui Moly MoS2 Anti-Friction Engine Treatment | 300 ml | Oil additive | SKU: 2009

48% Off

9.7 worth the money

9.1 Long life

9.1 distance

Why we love it

Cuts down on friction

Lubricates engine

Improves engine sound
Main highlights

You will be surprised at how much better your engine sounds and how controlled it will be even at very high RPM
Motor oil additive - Liqui Moly MoS2 anti-friction (300 ml. Can).Fit Type: Universal
Forms High load-bearing film of lubricant on all friction surfaces
Flash point: 181.0 degrees_celsius
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9.2

Excellent

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5

Prolong Super Lubricants
Prolong Super Lubricants PSL11000 Engine Treatment - 12 oz. , White

9.9 distance

9.9 Long life

9.7 worth the money
Main highlights

Offers to Protect the Engine Even when the Motor Oil is Not Yet Fully Circulating
Offers Molecules that Interact with Metal Surfaces and Chemically Bond to Create a Protective Layer that Reduces Damaging Friction and Heat
Includes a Formula with Anti-Friction Metal Treatment Technology
Features a Formula Containing No Solid Particles Such as PTFE Resins, 'Molys', Zinc, Copper, or Graphite
Features Engineering Designed to Treat Metal Surfaces of Both Gasoline and Diesel Fueled Engines
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8.9

Very Good

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6

Liqui Moly
Liqui Moly Pro-Line Engine Flush | 500 ml | Oil additive | SKU: 2037

9.7 Simple to use

9.3 worth the money

9.1 distance

Why we love it

Simple to use

Easy way to clean and flush oil systems

Neutral to seals and other materials
Main highlights

Key Features
Rapid and gentle cleaning, seals-safe, catalytic converter compatible, easy to use. Cleans engine oil systems efficiently.

Ideal Use Cases
Perfect for gasoline and diesel engines needing oil system maintenance. Enhances engine longevity and performance.

Customer Reviews
Highly praised for its effectiveness in cleaning, ease of use, and compatibility with various engines.
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8.7

Very Good

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7

Bar's Leaks
Bar's Leaks High Mileage Engine Repair-It, 16.9 oz

13% Off

9.1 Simple to use

8.2 Noise level

8.0 worth the money

Why we love it

Restores engine performance and reduces common oil issues.

Increases horsepower and reduces engine noise.

Stops leaks and smoking, saving costly repairs.
Main highlights

Restores Performance and Increases Power
Contains top performance additives to repair oil-related problems, restore lost compression and horsepower, reduce noise and oil consumption, and improve worn engine parts.

Ideal for High-Mileage Vehicles with Oil Leaks
Best used for vehicles experiencing oil leaks, noise, and smoking, offering a budget-friendly alternative to expensive repairs or replacements.

Highly Praised for Leak Reduction
Many customers commend the product for significantly reducing or even stopping oil leaks, providing a cost-effective solution for high-mileage engines.
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8.4

Good

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8

SHINE ARMOR
Engine Oil Additive Performance Booster - American Made Engine Oil Treatment for Wear and Tear Protection - Protect Gas and Diesel Engines with Friction and Stiction Eliminator Nanoparticles

9.9 Simple to use

9.7 lasts a long time

9.1 Long life

Why we love it

Improves fuel efficiency and engine performance.

Reduces engine noise and vibration noticeably.

Compatible with all engine types and motor oils.
Main highlights

Optimal Engine Performance
Extend motor oil and engine life by reducing engine temp and wear, raising oil pressure and durability with high viscosity nanoparticle solution.

Ideal for High Mileage Engines
Boosts performance in both gas and diesel engines, compatible with all types of motor and engine oils, and reduces engine noise and vibration.

Praised for Improved MPG
Customers frequently report noticeable improvements in gas mileage, smoother engine performance, quieter operation, and better idling and power.
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8.3

Good

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9

DNL
BestLine Racing Diamond Nano-Lube Engine Oil Treatment (12 ounce)

9.1 distance

8.9 worth the money

Why we love it

Reduces friction by up to 60

Can be used for any type of vehicle

Lubricates with diamond nano particles
Main highlights

Key Features and Benefits
Reduces friction by 60%, forms ultra-low friction layer, and offers extreme heat resistance for enhanced engine performance.

Ideal Use Cases
Versatile for any vehicle, from go-karts to commercial trucks, optimizing engine efficiency across a wide range of applications.

Customer Reviews Summary
Most praised for significantly improving engine smoothness and longevity, with noticeable performance enhancement across vehicle types.
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8.2

Good

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10

Sea Foam
SeaFoam SF-16 Motor Treatment 16 oz. Can (3)

9.9 Precision

9.9 Simple to use

9.5 worth the money

Why we love it

Improves engine performance and smoothness.

Prolongs engine life and maintains cleanliness.

Versatile use in various engines and vehicles.
Main highlights

Versatile Motor Treatment
SeaFoam SF-16 Motor Treatment cleans and lubricates fuel systems, improves engine performance, and is suitable for gas and oil usage.

Ideal for Older Vehicles and Equipment
Best used in older cars, boats, and small engines to resolve issues like rough idling, hesitation, and poor acceleration.

Highly Effective Engine Cleaner
Customers frequently praise its ability to clean engine components, resulting in smoother performance and extended engine life.
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8.1

Good

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