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Oils & Fluids

Engine Additive

10 Best Engine Additive 2025 in the United States

Name: Chevron Techron Concentrate Plus Fuel System Cleaner, 20 oz., Pack of 1
Brand: Chevron
Price: 14.74 USD
Availability: InStock

From leading brands and best sellers available on the web.

Catalytic Converter Cleaner New Technology Very Effective kit

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Winner

Chevron

Chevron Techron Concentrate Plus Fuel System Cleaner, 20 oz., Pack of 1

10.0

score

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Catalytic Converter Cleaner New Technology Very Effective kit

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STAR BRITE

STAR BRITE Star Tron Enzyme Fuel Treatment - Concentrated Formula 32 Fl. Oz. – Treats up to 512 Gallons - Fuel Stabilizer & Treatment, Gasoline Stabilizer, Star Tron Marine Enzyme Fuel Treatment

10.0

score

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Lucas Oil

Lucas Oil 10003 Fuel Treatment - 1 Quart

9.9

score

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Archoil

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

9.7

score

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SUNBELT OUTDOOR PRODUCTS

Sea Foam SF16 Motor Treatment 16 oz

9.4

score

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Liqui Moly

LIQUI MOLY Oil Additive Cera Tec 3721 Ceramic Wear & Tear Protection for Petrol & Diesel Engines Smoother Engine Performance, Less Friction & Lower Fuel Consumption 300 ml

9.2

score

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Liqui Moly

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

8.9

score

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Liqui Moly

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

8.6

score

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TriboTEX

TriboTEX Nano Oil Additive Car Engine Treatment: Add to Engine Lube - Makes High Mileage Cars Like New with a Synthetic Material (Treats One Regular Truck, Tractor or Small Diesel)

8.4

score

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#10

Lucas

Lucas Oil 10118 High Mileage Oil Stabilizer - 1 Quart

8.1

score

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10 Best Engine Additive 2025 in the United States

Catalytic Converter Cleaner New Technology Very Effective kit

Chevron Techron Concentrate Plus Fuel System Cleaner, 20 oz., Pack of 1

Catalytic Converter Cleaner New Technology Very Effective kit

STAR BRITE Star Tron Enzyme Fuel Treatment - Concentrated Formula 32 Fl. Oz. – Treats up to 512 Gallons - Fuel Stabilizer & Treatment, Gasoline Stabilizer, Star Tron Marine Enzyme Fuel Treatment

Lucas Oil 10003 Fuel Treatment - 1 Quart

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

Sea Foam SF16 Motor Treatment 16 oz

MotorPower Care Carbon Cleaner, 2 Pack, 16.9 fl oz Each, Removes Carbon Build-Up on Valves, Improves Performance & Efficiency - Safe for Use on Engine Components

Liqui Moly 2007 Jectron Gasoline Fuel Injection Cleaner - 300 ml , blue , 10.14 Fl Oz (Pack of 1 )

Liqui Moly 20004 Hydraulic Lifter Additive 300 ml

LiquiMoly 3721 Engine Oil Additive

LIQUI MOLY Valve Clean | 150 ml | Petroladititive | SKU: 2001, Blue

LIQUI MOLY Oil Additive Cera Tec 3721 Ceramic Wear & Tear Protection for Petrol & Diesel Engines Smoother Engine Performance, Less Friction & Lower Fuel Consumption 300 ml

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

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

TriboTEX Nano Oil Additive Car Engine Treatment: Add to Engine Lube - Makes High Mileage Cars Like New with a Synthetic Material (Treats One Regular Truck, Tractor or Small Diesel)

Lucas Oil 10118 High Mileage Oil Stabilizer - 1 Quart

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