10 bestOil Additive For Engine Knockof July 2025
112M consumers helped this year.
1

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

9.8
2

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

9.6
38% off
3

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

9.4
4

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

9.1
24% off
5

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

8.8
OtherUp to 9% off
6

3 cans of BG EPR Engine Performance Restoration
BG(0002698761)

8.5
16% off
7

Lucas Oil 10063 Engine Break-In Oil Additive - 16 oz
LUCAS

8.2
8

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

7.9
10% off
9

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

7.6
10

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

7.3

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