10 Best line motor oil treatments of 2025

Save up to 14% off

Best Choice

1

Red Line

Red Line 42804 Full Synthetic Gear Oil, V-Twin Transmission Oil with Shockproof - 1 Quart

10% Off
9.9

Exceptional

Our Rating
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Value for Money

2

Engine Wizard
Engine Wizard - Engine Oil Stop Leak (1oz) Engine Treatment, Stop Leaks and Stop Smoke without Needing to Dismantle
Main highlights

Quick Oil Leak Fix
Resolves oil leaks within 30 miles, reducing oil loss.

Ideal for All Engines
Suitable for 3 to 10-cylinder engines in any vehicle.

Instant Smoke Reduction
Praised for eliminating blue smoke within seconds.
9.8

Exceptional

Our Rating
3

Red Line

Red Line 81403 Engine Oil Break-In Additive - 16 Ounce

14% Off
9.7

Exceptional

Our Rating
4

Lucas Oil
Lucas Oil 10001 Heavy Duty Oil Stabilizer - 1 Quart
Main highlights

Key Features
100% petroleum-based, enhances engine performance, suitable for new engines, and offers multi-use versatility. Trusted by professionals for demanding conditions.

Ideal Use Cases
Optimal for keeping new engines running smoothly, ideal for high-performance vehicles, and versatile for various engine types.

Customer Reviews
Most praised for significantly improving engine performance and lifespan, with noticeable smoothness in engine operation.
9.5

Excellent

Our Rating

9.7
worth the money

9.7
distance

9.7
Long life
5

Lucas Oil
Lucas Oil 10016 Complete Engine Treatment - 16 Ounce
Main highlights

Comprehensive Engine Care
Cleans and lubricates the entire fuel system, improving engine efficiency and reducing emissions.

Ideal for Regular Maintenance
Best used for upkeep between oil changes, not for serious engine repairs.

Highly Rated Performance
Praised for reducing engine pinging and improving overall maintenance.
9.4

Excellent

Our Rating

8.7
distance

8.2
worth the money

8.0
Long life
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6

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

High Load-Bearing Film
Forms a durable lubricant layer on all friction surfaces.

Ideal for High Mileage Engines
Perfect for engines needing smoother operation at high RPMs.

Noise Reduction Praised
Customers highlight significant reduction in engine noise and vibration.
9.3

Excellent

Our Rating

9.7
worth the money

9.1
Long life

9.1
distance
7

Liqui Moly
LIQUI MOLY Motor Oil Saver | 300 ml | Oil additive | SKU: 2020
Main highlights

Reduces_Oil_Consumption_and_Prevents_Leaks
Liqui Moly Motor Oil Saver reduces oil consumption and prevents leaks through regeneration of engine seals.

Ideal_for_Aging_Engines_with_Seal_Issues
Best used in vehicles with aging engines experiencing oil leaks or consumption due to worn seals.

Highly_Effective_in_Reducing_Oil_Loss
Praised by customers for significantly reducing oil loss and preventing exhaust smoke.
9.2

Excellent

Our Rating

8.7
worth the money

8.7
distance
8

STP

STP 65148 15 Oz Oil Treatment
9.1

Excellent

Our Rating

9.7
worth the money

9.7
distance
9

Generic

Anti-Wear Engine Treatment Oil Additive, 2pcs Highly Effective Engine Anti-Wear Protectant, Wondeea Engine Anti-Wear Protectant, Transmission Fluid Additive for Car, Noise Reduction and Shaking Cure
9.0

Excellent

Our Rating
10

Lucas Oil
Lucas Oil 10003 Fuel Treatment - 1 Quart
Main highlights

Fuel System Efficiency
Cleans and lubricates the fuel system, improving MPG and reducing emissions.

Versatile Application
Ideal for gasoline and diesel engines, including older engines needing lead replacement.

Customer Praised Performance
Highly effective in restoring engine power and smooth operation.
8.7

Very Good

Our Rating

9.9
Simple to use

9.7
worth the money

9.5
Long life

10 Best line motor oil treatments of 2025

1

Red Line 42804 Full Synthetic Gear Oil, V-Twin Transmission Oil with Shockproof - 1 Quart

How do we rank?

How do we rank?

Analyzing top stores

2

Engine Wizard - Engine Oil Stop Leak (1oz) Engine Treatment, Stop Leaks and Stop Smoke without Needing to Dismantle

3

Red Line 81403 Engine Oil Break-In Additive - 16 Ounce

4

Lucas Oil 10001 Heavy Duty Oil Stabilizer - 1 Quart

9.7

9.7

9.7

5

Lucas Oil 10016 Complete Engine Treatment - 16 Ounce

8.7

8.2

8.0

6

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

9.7

9.1

9.1

7

LIQUI MOLY Motor Oil Saver | 300 ml | Oil additive | SKU: 2020

8.7

8.7

8

STP 65148 15 Oz Oil Treatment

9.7

9.7

9

Anti-Wear Engine Treatment Oil Additive, 2pcs Highly Effective Engine Anti-Wear Protectant, Wondeea Engine Anti-Wear Protectant, Transmission Fluid Additive for Car, Noise Reduction and Shaking Cure

10

Lucas Oil 10003 Fuel Treatment - 1 Quart

9.9

9.7

9.5

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