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10 bestOil Additive For Engine Knockof October 2025

112M consumers helped this year.

1

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

Archoil

9.8

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14% off

2

Liqui Moly 2009 Anti-Friction Oil Treatment - 300 ml
Liqui Moly 2009 Anti-Friction Oil Treatment - 300 ml

Liqui Moly

9.6

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3

Lucas Oil H/D Oil Stabilizer/12x1/Quart, Multi, One Size (10001)
Lucas Oil H/D Oil Stabilizer/12x1/Quart, Multi, One Size (10001)

Lucas Oil

9.3

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15% off

4

Liqui Moly (20002) Cera Tec Friction Modifier - 300 ml
Liqui Moly (20002) Cera Tec Friction Modifier - 300 ml

Liqui Moly

9.0

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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

8.7

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Related productsUp to 14% off

Rislone High Mileage Engine Treatment, (Pack of 5)

Rislone High Mileage Engine Treatment, (Pack of 5)

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3 cans of BG EPR Engine Performance Restoration

3 cans of BG EPR Engine Performance Restoration

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5 - Pack Bg MOA Motor Oil Additive (5) 11oz. Cans

5 - Pack Bg MOA Motor Oil Additive (5) 11oz. Cans

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Bg Products MOA & EPR Motor Oil Additive Lubrication Supplement Engine Restore

Bg Products MOA & EPR Motor Oil Additive Lubrication Supplement Engine Restore

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10% off

6

Restore (00012) 6-Cylinder Formula Engine Restorer and Lubricant - 12.5 oz.
Restore (00012) 6-Cylinder Formula Engine Restorer and Lubricant - 12.5 oz.

Restore

8.4

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7% off

7

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
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

ZMAX

8.1

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20% off

8

Lucas Oil 10016 Complete Engine Treatment - 16 fl oz
Lucas Oil 10016 Complete Engine Treatment - 16 fl oz

Lucas Oil

7.9

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9

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

7.6

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10

REV X ZDDP Oil Additive - Zinc & Phosphorus (5 Pack)
REV X ZDDP Oil Additive - Zinc & Phosphorus (5 Pack)

REV X

7.3

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