Shop Car Oil Additives That Work

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$117.50
Marvel Mystery Oil Original Motor Treatment, Engine Oil & Fuel Treatment Additive, Cleans And Lubricates Fuel System, Prevents Leaks, Improves Engine
Amazon.com
62
Free shipping
$117.50
Marvel Mystery Oil Original Motor Treatment, Engine Oil & Fuel Treatment Additive, Cleans And Lubricates Fuel System, Prevents Leaks, Improves Engine
Amazon.com
62
$14.33
Slick 50 Original Engine Treatment | 32 Oz., Single
Amazon.com
406
$14.33
Slick 50 Original Engine Treatment | 32 Oz., Single
Amazon.com
406
$18.52
$21.99
Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce
Amazon.com
1K+
15% off
$18.52
$21.99
Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce
Amazon.com
1K+
$48.89
$52.45
Liquimoly 3721 Engine Oil Additive
Amazon.com
967
Free shipping
$48.89
$52.45
Liquimoly 3721 Engine Oil Additive
Amazon.com
967
$74.99
Zmax 58-011 - Engine & Fuel Formula Kit - Easy To Use - Reduces Carbon Build-Up & Lubricates Metal Extending Life Of Car Or Truck - Runs Efficiently,
Amazon.com
1K+
Free shipping
$74.99
Zmax 58-011 - Engine & Fuel Formula Kit - Easy To Use - Reduces Carbon Build-Up & Lubricates Metal Extending Life Of Car Or Truck - Runs Efficiently,
Amazon.com
1K+
$19.49
Hot Shot's Secret STICTION ELIMINATOR Engine Oil Additive- 16 OZ
D&J Precision Machine
2K+
$19.49
Hot Shot's Secret STICTION ELIMINATOR Engine Oil Additive- 16 OZ
D&J Precision Machine
2K+
$132.99
Lucas Oil Motor Additive, Pure Synthetic Oil Stabilizer, Synthetic, 1 Gal Jug, Each
Amazon.com
124
Free shipping
$132.99
Lucas Oil Motor Additive, Pure Synthetic Oil Stabilizer, Synthetic, 1 Gal Jug, Each
Amazon.com
124
$143.96
Lucas Oil Engine Oil Stabilizer
Raney's Truck Parts
851
$143.96
Lucas Oil Engine Oil Stabilizer
Raney's Truck Parts
851
$11.99
Bar's Leaks Rislone 4405 Engine Oil Supplement Concentrate With Zinc Treatment - 11 Oz, Yellow
Amazon.com
1K+
$11.99
Bar's Leaks Rislone 4405 Engine Oil Supplement Concentrate With Zinc Treatment - 11 Oz, Yellow
Amazon.com
1K+
$24.99
Marvel Mystery Oil 53436 Motor Treatment, Engine Oil & Fuel Treatment Additive, Cleans And Lubricates Fuel System, Prevents Leaks, Improves Engine
Amazon.com
8
$24.99
Marvel Mystery Oil 53436 Motor Treatment, Engine Oil & Fuel Treatment Additive, Cleans And Lubricates Fuel System, Prevents Leaks, Improves Engine
Amazon.com
8
$31.49
Hot Shot's Secret - HSSTSE32Z Shift Restore Automatic Transmission Additive 32 Fluid Ounce Bottle
Amazon.com
1K+
$31.49
Hot Shot's Secret - HSSTSE32Z Shift Restore Automatic Transmission Additive 32 Fluid Ounce Bottle
Amazon.com
1K+
$95.82
Dura Lube Engine Treatment | 32 Oz., 6-Pack
Amazon.com
465
Free shipping
$95.82
Dura Lube Engine Treatment | 32 Oz., 6-Pack
Amazon.com
465
$38.98
Zmax 51-011 - Engine & Fuel Formula Kit - Easy To Use - Reduces Carbon Build-Up & Lubricates Metal Extending Life Of Car Or Truck - Runs Efficiently,
Amazon.com
1K+
Free shipping
$38.98
Zmax 51-011 - Engine & Fuel Formula Kit - Easy To Use - Reduces Carbon Build-Up & Lubricates Metal Extending Life Of Car Or Truck - Runs Efficiently,
Amazon.com
1K+
$12.49
$14.95
Lucas Oil 10798 High Performance Foam Filter Oil - 1 Quart
Amazon.com
259
16% off
$12.49
$14.95
Lucas Oil 10798 High Performance Foam Filter Oil - 1 Quart
Amazon.com
259
$9.99
Rislone High Mileage Oil Supplement Stabilizer, 16.9 Oz, 4400
Advance Auto Parts
123
$9.99
Rislone High Mileage Oil Supplement Stabilizer, 16.9 Oz, 4400
Advance Auto Parts
123
$8.92
$10.49
Stp Synthetic Oil Treatment Engine Oil Additive, 15 Fl Oz
Walmart
1
14% off
$8.92
$10.49
Stp Synthetic Oil Treatment Engine Oil Additive, 15 Fl Oz
Walmart
1
$22.53
Bar's Leaks OS-1 Oil Seal Engine Oil Burning And Leak Repair, 16.9 Oz.
Amazon.com
3K+
$22.53
Bar's Leaks OS-1 Oil Seal Engine Oil Burning And Leak Repair, 16.9 Oz.
Amazon.com
3K+
$5.99
STP Oil Treatment - High-Viscosity Formula Formulated For High-Mileage Engines, 66079
Advance Auto Parts
845
$5.99
STP Oil Treatment - High-Viscosity Formula Formulated For High-Mileage Engines, 66079
Advance Auto Parts
845
$38.95
Motorkote MK-HL32-06 Heavy Duty Hyper Lubricant Engine Treatment, 32-Ounce, Single, Black
Amazon.com
3K+
Free shipping
$38.95
Motorkote MK-HL32-06 Heavy Duty Hyper Lubricant Engine Treatment, 32-Ounce, Single, Black
Amazon.com
3K+
$7.99
STP High Mileage Oil Treatment, 15 Oz., 78595
Advance Auto Parts
$7.99
STP High Mileage Oil Treatment, 15 Oz., 78595
Advance Auto Parts
$59.99
Hot Shot's Secret STICTION ELIMINATOR Engine Oil Additive - 64 OZ
D&J Precision Machine
3K+
$59.99
Hot Shot's Secret STICTION ELIMINATOR Engine Oil Additive - 64 OZ
D&J Precision Machine
3K+
$10.29
Marvel Mystery Oil MM12R Oil Enhancer & Fuel Treatment (32Oz.), MM13R
Advance Auto Parts
1K+
$10.29
Marvel Mystery Oil MM12R Oil Enhancer & Fuel Treatment (32Oz.), MM13R
Advance Auto Parts
1K+
$8.88
Rislone Hy-Per Lube High Mileage Oil Stabilizer, 16.9 Fl Oz
Walmart
123
$8.88
Rislone Hy-Per Lube High Mileage Oil Stabilizer, 16.9 Fl Oz
Walmart
123
$66.00
Lucas Heavy Duty Oil Stabilizer (1 Qt)-6 Pack
Amazon.com
7
Free shipping
$66.00
Lucas Heavy Duty Oil Stabilizer (1 Qt)-6 Pack
Amazon.com
7
$4.98
Stp High Viscosity Oil Treatment (15 Fluid Ounces)
Walmart
24
$4.98
Stp High Viscosity Oil Treatment (15 Fluid Ounces)
Walmart
24
$18.99
Lucas Oil Products High Mileage Oil Stabilizer/For Over 75K Miles, 1 Quart, 10118
Advance Auto Parts
3
$18.99
Lucas Oil Products High Mileage Oil Stabilizer/For Over 75K Miles, 1 Quart, 10118
Advance Auto Parts
3
$66.18
$111.99
LUCAS OIL 10002 H/D Oil Stabilizer 4 Pack /1 Gal
Amazon.com
Free shipping
40% off
$66.18
$111.99
LUCAS OIL 10002 H/D Oil Stabilizer 4 Pack /1 Gal
Amazon.com
Free shipping
$12.99
$17.99
Eastwood 4Oz. ZDDP Oil Additive
CJ Pony Parts
15
27% off
$12.99
$17.99
Eastwood 4Oz. ZDDP Oil Additive
CJ Pony Parts
15
$77.54
$114.99
Hot Shots Secret Original Stiction Eliminator 1 Gallon - Treats 64 Quarts Of Oil - Oil Additive For Gas & Diesel Engines, Reduces Wear, Eliminates
Amazon.com
15
Free shipping
32% off
$77.54
$114.99
Hot Shots Secret Original Stiction Eliminator 1 Gallon - Treats 64 Quarts Of Oil - Oil Additive For Gas & Diesel Engines, Reduces Wear, Eliminates
Amazon.com
15
$10.49
STP Synthetic Automotive Oil Treatment - 15 Fl. Oz. Bottle, 18413B
Advance Auto Parts
$10.49
STP Synthetic Automotive Oil Treatment - 15 Fl. Oz. Bottle, 18413B
Advance Auto Parts
$30.99
Hot Shot's Secret HSSFR332Z: Hot Shot's Secret FR3 Oil Additive
Summit Racing
2
$30.99
Hot Shot's Secret HSSFR332Z: Hot Shot's Secret FR3 Oil Additive
Summit Racing
2
$50.39
Hot Shot's Secret HSSFR364Z: Hot Shot's Secret FR3 Oil Additive
Summit Racing
39
$50.39
Hot Shot's Secret HSSFR364Z: Hot Shot's Secret FR3 Oil Additive
Summit Racing
39
$23.84
$33.11
Rislone Engine Treatment Oil Additive Max Performance Clean Restore
eBay
17
27% off
$23.84
$33.11
Rislone Engine Treatment Oil Additive Max Performance Clean Restore
eBay
17
$59.95
$109.00
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)
cauled.com
Free shipping
45% off
$59.95
$109.00
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)
cauled.com
Free shipping
$12.99
$17.99
Eastwood 4 Oz. ZDDP Oil Additive
Classic Muscle Parts
15
27% off
$12.99
$17.99
Eastwood 4 Oz. ZDDP Oil Additive
Classic Muscle Parts
15
$474.59
Hot Shot's Secret HSSFR305G: Hot Shot's Secret FR3 Oil Additive
Summit Racing
Free shipping
$474.59
Hot Shot's Secret HSSFR305G: Hot Shot's Secret FR3 Oil Additive
Summit Racing
Free shipping
7 Best Oil Additives to Enhance Engine Life and Performance
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Shop Car Oil Additives That Work

Sponsored
About our ads
$117.50
Marvel Mystery Oil Original Motor Treatment, Engine Oil & Fuel Treatment Additive, Cleans And Lubricates Fuel System, Prevents Leaks, Improves Engine
Amazon.com
62
Free shipping
$117.50
Marvel Mystery Oil Original Motor Treatment, Engine Oil & Fuel Treatment Additive, Cleans And Lubricates Fuel System, Prevents Leaks, Improves Engine
Amazon.com
62
$14.33
Slick 50 Original Engine Treatment | 32 Oz., Single
Amazon.com
406
$14.33
Slick 50 Original Engine Treatment | 32 Oz., Single
Amazon.com
406
$18.52
$21.99
Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce
Amazon.com
1K+
15% off
$18.52
$21.99
Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce
Amazon.com
1K+
$48.89
$52.45
Liquimoly 3721 Engine Oil Additive
Amazon.com
967
Free shipping
$48.89
$52.45
Liquimoly 3721 Engine Oil Additive
Amazon.com
967
$74.99
Zmax 58-011 - Engine & Fuel Formula Kit - Easy To Use - Reduces Carbon Build-Up & Lubricates Metal Extending Life Of Car Or Truck - Runs Efficiently,
Amazon.com
1K+
Free shipping
$74.99
Zmax 58-011 - Engine & Fuel Formula Kit - Easy To Use - Reduces Carbon Build-Up & Lubricates Metal Extending Life Of Car Or Truck - Runs Efficiently,
Amazon.com
1K+
$19.49
Hot Shot's Secret STICTION ELIMINATOR Engine Oil Additive- 16 OZ
D&J Precision Machine
2K+
$19.49
Hot Shot's Secret STICTION ELIMINATOR Engine Oil Additive- 16 OZ
D&J Precision Machine
2K+
$132.99
Lucas Oil Motor Additive, Pure Synthetic Oil Stabilizer, Synthetic, 1 Gal Jug, Each
Amazon.com
124
Free shipping
$132.99
Lucas Oil Motor Additive, Pure Synthetic Oil Stabilizer, Synthetic, 1 Gal Jug, Each
Amazon.com
124
$143.96
Lucas Oil Engine Oil Stabilizer
Raney's Truck Parts
851
$143.96
Lucas Oil Engine Oil Stabilizer
Raney's Truck Parts
851
$11.99
Bar's Leaks Rislone 4405 Engine Oil Supplement Concentrate With Zinc Treatment - 11 Oz, Yellow
Amazon.com
1K+
$11.99
Bar's Leaks Rislone 4405 Engine Oil Supplement Concentrate With Zinc Treatment - 11 Oz, Yellow
Amazon.com
1K+
$24.99
Marvel Mystery Oil 53436 Motor Treatment, Engine Oil & Fuel Treatment Additive, Cleans And Lubricates Fuel System, Prevents Leaks, Improves Engine
Amazon.com
8
$24.99
Marvel Mystery Oil 53436 Motor Treatment, Engine Oil & Fuel Treatment Additive, Cleans And Lubricates Fuel System, Prevents Leaks, Improves Engine
Amazon.com
8
$31.49
Hot Shot's Secret - HSSTSE32Z Shift Restore Automatic Transmission Additive 32 Fluid Ounce Bottle
Amazon.com
1K+
$31.49
Hot Shot's Secret - HSSTSE32Z Shift Restore Automatic Transmission Additive 32 Fluid Ounce Bottle
Amazon.com
1K+
$95.82
Dura Lube Engine Treatment | 32 Oz., 6-Pack
Amazon.com
465
Free shipping
$95.82
Dura Lube Engine Treatment | 32 Oz., 6-Pack
Amazon.com
465
$38.98
Zmax 51-011 - Engine & Fuel Formula Kit - Easy To Use - Reduces Carbon Build-Up & Lubricates Metal Extending Life Of Car Or Truck - Runs Efficiently,
Amazon.com
1K+
Free shipping
$38.98
Zmax 51-011 - Engine & Fuel Formula Kit - Easy To Use - Reduces Carbon Build-Up & Lubricates Metal Extending Life Of Car Or Truck - Runs Efficiently,
Amazon.com
1K+
$12.49
$14.95
Lucas Oil 10798 High Performance Foam Filter Oil - 1 Quart
Amazon.com
259
16% off
$12.49
$14.95
Lucas Oil 10798 High Performance Foam Filter Oil - 1 Quart
Amazon.com
259
$9.99
Rislone High Mileage Oil Supplement Stabilizer, 16.9 Oz, 4400
Advance Auto Parts
123
$9.99
Rislone High Mileage Oil Supplement Stabilizer, 16.9 Oz, 4400
Advance Auto Parts
123
$8.92
$10.49
Stp Synthetic Oil Treatment Engine Oil Additive, 15 Fl Oz
Walmart
1
14% off
$8.92
$10.49
Stp Synthetic Oil Treatment Engine Oil Additive, 15 Fl Oz
Walmart
1
$22.53
Bar's Leaks OS-1 Oil Seal Engine Oil Burning And Leak Repair, 16.9 Oz.
Amazon.com
3K+
$22.53
Bar's Leaks OS-1 Oil Seal Engine Oil Burning And Leak Repair, 16.9 Oz.
Amazon.com
3K+
$5.99
STP Oil Treatment - High-Viscosity Formula Formulated For High-Mileage Engines, 66079
Advance Auto Parts
845
$5.99
STP Oil Treatment - High-Viscosity Formula Formulated For High-Mileage Engines, 66079
Advance Auto Parts
845