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10 bestAi Engine Additivesof December 2024

112M consumers helped this year.

1

Liqui Moly 2037 Pro-Line Engine Flush - 500 Milliliters
Liqui Moly 2037 Pro-Line Engine Flush - 500 Milliliters

Liqui Moly

9.8

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13% off

2

STP Super Concentrated Fuel Injector Cleaner Fuel Additive, 155ml
STP Super Concentrated Fuel Injector Cleaner Fuel Additive, 155ml

STP

9.6

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3

XADO Engine Oil System Cleaner with Anti-Carbon Effect - Removes Contamination & Engine Sludge - ATOMEX Total Flush Revitalizant (Bottle, 250ml)
XADO Engine Oil System Cleaner with Anti-Carbon Effect - Removes Contamination & Engine Sludge - ATOMEX Total Flush Revitalizant (Bottle, 250ml)

XADO

9.4

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4

XADO Engine Oil Additive - Protection For Engines - Additive For Wear Protection & Rebuilding Of Worn Metal Surfaces - Metal Conditioner With Revitalizant 1 Stage Maximum (Up To 5qt Of Oil Capacity)
XADO Engine Oil Additive - Protection For Engines - Additive For Wear Protection & Rebuilding Of Worn Metal Surfaces - Metal Conditioner With Revitalizant 1 Stage Maximum (Up To 5qt Of Oil Capacity)

XADO

9.1

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38% off

5

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

TriboTEX

8.9

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6

STP 17174 Multipurpose Motor Treatment, 473ml
STP 17174 Multipurpose Motor Treatment, 473ml

STP

8.6

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7

STP 17680 Ultra-5-in-1 High Performance Engine Treatment Cleaning Kit, 473mL
STP 17680 Ultra-5-in-1 High Performance Engine Treatment Cleaning Kit, 473mL

STP

8.3

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8

Bardahl B2 Engine Protection Motor Oil Additive - Zinc Engine Restore & Oil Burning Guard - Oil Treatment Designed to Lubricate & Reduce Wear on Older Cars & High Mileage Engines - 12 fl oz (12 Pack)
Bardahl B2 Engine Protection Motor Oil Additive - Zinc Engine Restore & Oil Burning Guard - Oil Treatment Designed to Lubricate & Reduce Wear on Older Cars & High Mileage Engines - 12 fl oz (12 Pack)

Bardahl

8.0

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9

XADO Engine Oil additive - Protection for Engines - additive for wear Protection & rebuilding of Worn Metal Surfaces - Metal Conditioner w. Revitalizant 1Stage Maximum SUV (up to 10qt of Oil Capacity)
XADO Engine Oil additive - Protection for Engines - additive for wear Protection & rebuilding of Worn Metal Surfaces - Metal Conditioner w. Revitalizant 1Stage Maximum SUV (up to 10qt of Oil Capacity)

XADO

7.7

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10

XADO Engine Oil Additive 1 Stage - Friction Modifier - Motor Restore Treatment - Performance Restoration - Protects Against Cold-Start Damage - For Gas, Diesel and LPG Engines - Revitalizant (Blister)
XADO Engine Oil Additive 1 Stage - Friction Modifier - Motor Restore Treatment - Performance Restoration - Protects Against Cold-Start Damage - For Gas, Diesel and LPG Engines - Revitalizant (Blister)

XADO

7.4

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