10 bestEngine Treatment For High Mileageof December 2025
112M consumers helped this year.
1
Liqui Moly (20002) Cera Tec Friction Modifier - 300 ml
Liqui Moly
9.8
2
Red Line (60103) Complete SI-1 Fuel System Cleaner - 15 Ounce
Red Line
9.6
3
Gumout 30002 Multi-System Tune-Up 473ml
Gumout
9.3
4
Liqui Moly 2009 Anti-Friction Oil Treatment - 300 ml
Liqui Moly
9.1
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
8.8
Other
Liqui Moly 2009 Anti-Friction Oil Treatment-pk4
STP High Mileage Fuel Injector Cleaner and Carburetor Cleaner Treatment, Bottled Lubricant for Upper Cylinder, 5.25 Oz, 12 Count, STP
STP 17174 Multipurpose Motor Treatment, 473ml
Lucas LUC10130 Synthetic Oil Stabilizer. Quart
6
Lucas Oil H/D Oil Stabilizer/12x1/Quart, Multi, One Size (10001)
Lucas Oil
8.5
7
Bar's Leaks High Mileage Engine Repair-It, Pack of 4
Bar's Leaks
8.2
8
Gumout 510013 High Mileage Fuel Injector Cleaner, 6 oz. (Pack of 6)
Gumout
7.9
13% off
9
STP Super Concentrated Fuel Injector Cleaner Fuel Additive, 155ml
STP
7.6
10
STP High Mileage Oil Treatment + Stop Leak - 15 FL OZ
STP
7.3
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