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Oils & Fluids

Engine Oil Additives

10 Best Engine Oil Additives 2025 in the United States

Name: Sea Foam SF128 Motor Treatment, 1 Gallon
Brand: Sea Foam
Price: 58.95 USD
Availability: InStock

From leading brands and best sellers available on the web.

Winner

Sea Foam

Sea Foam SF128 Motor Treatment, 1 Gallon

9.8

score

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LUCAS

Lucas Oil 10002 Heavy Duty Oil Stabilizer - 1 Gallon (Pack of 4)

9.6

score

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Sea Foam

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

9.5

score

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Sea Foam

Sea Foam High Mileage Motor Treatment HM16, 16 oz, Pack of 1, Silver

9.3

score

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Archoil

Archoil Ultimate Diesel Kit - AR9100 Friction Modifier (16oz) + AR6500 Diesel Treatment (40oz) + AR6400-D Diesel Fuel System Cleaner (12oz)

9.0

score

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Archoil

Archoil AR9100 Oil Additive (16oz) for All Vehicles - Powerstroke Cold Starts, Eliminates Injector Problems

8.7

score

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Liqui Moly

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

8.5

score

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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

8.2

score

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Lucas

Lucas Oil 10118 High Mileage Oil Stabilizer - 1 Quart

7.9

score

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#10

Lucas Oil

Lucas Oil 10130 Pure Synthetic Oil Stabilizer - 1 Quart

7.6

score

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10 Best Engine Oil Additives 2025 in the United States

Sea Foam SF128 Motor Treatment, 1 Gallon

Lucas Oil 10002 Heavy Duty Oil Stabilizer - 1 Gallon (Pack of 4)

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

Sea Foam High Mileage Motor Treatment HM16, 16 oz, Pack of 1, Silver

Archoil Ultimate Diesel Kit - AR9100 Friction Modifier (16oz) + AR6500 Diesel Treatment (40oz) + AR6400-D Diesel Fuel System Cleaner (12oz)

Archoil AR9100 Oil Additive (16oz) for All Vehicles - Powerstroke Cold Starts, Eliminates Injector Problems

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

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

Lucas Oil 10118 High Mileage Oil Stabilizer - 1 Quart

Lucas Oil 10130 Pure Synthetic Oil Stabilizer - 1 Quart

FAQ

What do engine oil additives do?

Are engine oil additives worth using?

How do I choose the best engine oil additive?

Can engine oil additives damage my engine?

When should I use engine oil additives?

10 Best Engine Oil Additives 2025 in the United States

Sea Foam SF128 Motor Treatment, 1 Gallon

Lucas Oil 10002 Heavy Duty Oil Stabilizer - 1 Gallon (Pack of 4)

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

Sea Foam High Mileage Motor Treatment HM16, 16 oz, Pack of 1, Silver

Archoil Ultimate Diesel Kit - AR9100 Friction Modifier (16oz) + AR6500 Diesel Treatment (40oz) + AR6400-D Diesel Fuel System Cleaner (12oz)

Lucas Oil 10001 Heavy Duty Oil Stabilizer - 1 Quart

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

Marvel Mystery Oil 32oz. (Pack 2)

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

BG Advanced Formula MOA 115

Archoil AR9100 Oil Additive (16oz) for All Vehicles - Powerstroke Cold Starts, Eliminates Injector Problems

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

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

Lucas Oil 10118 High Mileage Oil Stabilizer - 1 Quart

Lucas Oil 10130 Pure Synthetic Oil Stabilizer - 1 Quart

Lucas Oil Engine Additives

A&I Engine Additives

BG Engine Additives

Red Line Oil Engine Additives

Engine Additives

FAQ

What do engine oil additives do?

Are engine oil additives worth using?

How do I choose the best engine oil additive?

Can engine oil additives damage my engine?

When should I use engine oil additives?