Shop best engine cleaner additive

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$19.49
Hot Shot's Secret STICTION ELIMINATOR Engine Oil Additive- 16 OZ
D&J Precision Machine
3K+
$19.49
Hot Shot's Secret STICTION ELIMINATOR Engine Oil Additive- 16 OZ
D&J Precision Machine
3K+
$23.99
Hot Shot's Secret DIESEL EXTREME Injector Cleaner & Cetane Boost - .95L CANADIAN
D&J Precision Machine
$23.99
Hot Shot's Secret DIESEL EXTREME Injector Cleaner & Cetane Boost - .95L CANADIAN
D&J Precision Machine
$39.99
Hot Shot's Secret DIESEL EXTREME Injector Cleaner & Cetane Boost - 64 OZ
D&J Precision Machine
4K+
$39.99
Hot Shot's Secret DIESEL EXTREME Injector Cleaner & Cetane Boost - 64 OZ
D&J Precision Machine
4K+
$79.99
Hot Shot's Secret DIESEL EXTREME Injector Cleaner & Cetane Boost - 1 GALLON
D&J Precision Machine
5K+
$79.99
Hot Shot's Secret DIESEL EXTREME Injector Cleaner & Cetane Boost - 1 GALLON
D&J Precision Machine
5K+
$15.26
Slick 50 Original Engine Treatment | 32 Oz., Single
Amazon.com
639
$15.26
Slick 50 Original Engine Treatment | 32 Oz., Single
Amazon.com
639
$15.39
Lucas Oil 16 Oz. Engine Treatment LUCA10016
DkHardware.com
52
$15.39
Lucas Oil 16 Oz. Engine Treatment LUCA10016
DkHardware.com
52
$14.79
$18.99
Star Tron Enzyme Fuel Treatment - Small Engine Formula - 16 Oz Treats Up To 96 Gals, Gas Additive Rejuvenates & Stabilizes Old Gasoline, Cures &
Amazon.com
765
22% off
$14.79
$18.99
Star Tron Enzyme Fuel Treatment - Small Engine Formula - 16 Oz Treats Up To 96 Gals, Gas Additive Rejuvenates & Stabilizes Old Gasoline, Cures &
Amazon.com
765
$72.00
$95.88
STA-BIL Fast Fix - Small Engine Treatment, Cleans Carburetors & Injectors, Fixes Rough Running Engines, Eliminates Water, Carb Cleaner & Fuel Injector
Amazon.com
5K+
Free shipping
24% off
$72.00
$95.88
STA-BIL Fast Fix - Small Engine Treatment, Cleans Carburetors & Injectors, Fixes Rough Running Engines, Eliminates Water, Carb Cleaner & Fuel Injector
Amazon.com
5K+
$10.64
Marvel Mystery Oil Oil Additive: Motor Treatment, 32 Fl Oz Container Size Model: MM13R
Grainger
2K+
$10.64
Marvel Mystery Oil Oil Additive: Motor Treatment, 32 Fl Oz Container Size Model: MM13R
Grainger
2K+
$82.59
Hot Shot's Secret Diesel Duo - Stiction Eliminator And Diesel Extreme 2 Quarts Each
Amazon.com
1K+
Free shipping
$82.59
Hot Shot's Secret Diesel Duo - Stiction Eliminator And Diesel Extreme 2 Quarts Each
Amazon.com
1K+
$178.11
LIQUI MOLY Dijectron Additive - Gasoline Direct Injection (GDI) Cleaner Lqm22076
Extreme Power House
53
$178.11
LIQUI MOLY Dijectron Additive - Gasoline Direct Injection (GDI) Cleaner Lqm22076
Extreme Power House
53
$7.99
Gunk FEB-1: Solder Seal Gunk Foamy Engine Brite Engine Cleaner
Summit Racing
1
$7.99
Gunk FEB-1: Solder Seal Gunk Foamy Engine Brite Engine Cleaner
Summit Racing
1
$34.99
Liqui Moly Cera Tec Engine Oil Additive (300Ml Can) - Lm20002
GenRacer
$34.99
Liqui Moly Cera Tec Engine Oil Additive (300Ml Can) - Lm20002
GenRacer
$6.81
STP Oil Additive: Oil Treatment, 15 Fl Oz Container Size Model: 66079-0(8262)
Grainger
252
$6.81
STP Oil Additive: Oil Treatment, 15 Fl Oz Container Size Model: 66079-0(8262)
Grainger
252
$31.86
$50.98
Tribotex Small Oil Additive Engine Treatment: Add To Engine Oil - Makes High New
topbraggrealtyus
37% off
$31.86
$50.98
Tribotex Small Oil Additive Engine Treatment: Add To Engine Oil - Makes High New
topbraggrealtyus
$17.37
Gunk Engine Cleaner Degreaser: 15 Oz Aerosol Can EBGEL-XCP1
DkHardware.com
$17.37
Gunk Engine Cleaner Degreaser: 15 Oz Aerosol Can EBGEL-XCP1
DkHardware.com
$7.52
Marvel Mystery Oil Oil Additive: Motor Treatment, 16 Fl Oz Container Size Model: MM12R
Grainger
1K+
$7.52
Marvel Mystery Oil Oil Additive: Motor Treatment, 16 Fl Oz Container Size Model: MM12R
Grainger
1K+
$88.20
$99.99
Kroil Kreen All-In-One Gas & Oil Treatment - Engine Cleaner Additive - Improves Compression, Reduces Oil Use & Removes Carbon Deposits - For Gas &
Amazon.com
6
Free shipping
11% off
$88.20
$99.99
Kroil Kreen All-In-One Gas & Oil Treatment - Engine Cleaner Additive - Improves Compression, Reduces Oil Use & Removes Carbon Deposits - For Gas &
Amazon.com
6
$41.00
Bg 44K Platinum Fuel System Cleaner Bg Moa Engine Oil Supplement Bg
eBay
178
Free shipping
$41.00
Bg 44K Platinum Fuel System Cleaner Bg Moa Engine Oil Supplement Bg
eBay
178
$49.50
Lucas Oil 10873 Diesel Deep Clean - 64 Ounce
Amazon.com
620
Free shipping
$49.50
Lucas Oil 10873 Diesel Deep Clean - 64 Ounce
Amazon.com
620
$18.97
Carb Cleaner Fuel Additive | Bottle 1
Driven Racing Oil LLC
7
$18.97
Carb Cleaner Fuel Additive | Bottle 1
Driven Racing Oil LLC
7
$17.97
$21.99
Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce
Amazon.com
1K+
18% off
$17.97
$21.99
Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce
Amazon.com
1K+
$10.18
Engine Oil Flush - MOTUL Engine Flush (300 Ml. Can)
Sierra Madre Collection
$10.18
Engine Oil Flush - MOTUL Engine Flush (300 Ml. Can)
Sierra Madre Collection
$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+
$22.99
BMW E90 328I N52 3.0L - Liqui-Moly Oil Change Additive Package - Proline Engine Flush And Mos2 Anti Friction Oil Treatment: This Two-Step Kit ...
Turner Motorsport
$22.99
BMW E90 328I N52 3.0L - Liqui-Moly Oil Change Additive Package - Proline Engine Flush And Mos2 Anti Friction Oil Treatment: This Two-Step Kit ...
Turner Motorsport
$18.97
6 Oz. Fuel System Cleaner - Joe Gibbs Driven Carb Defender Fuel Additive | Joe Gibbs Driven Racing Oil 70044
Summit Racing
5
$18.97
6 Oz. Fuel System Cleaner - Joe Gibbs Driven Carb Defender Fuel Additive | Joe Gibbs Driven Racing Oil 70044
Summit Racing
5
$8.07
Gunk Engine Cleaner 17 Oz Liquid Aromatic Milky White FEB1CA
DkHardware.com
72
$8.07
Gunk Engine Cleaner 17 Oz Liquid Aromatic Milky White FEB1CA
DkHardware.com
72
$59.90
Archoil Diesel Fuel System Kit - AR6500 Diesel Treatment (40 Oz) + AR6400-D Diesel Fuel System Cleaner
Amazon.com
1K+
Free shipping
$59.90
Archoil Diesel Fuel System Kit - AR6500 Diesel Treatment (40 Oz) + AR6400-D Diesel Fuel System Cleaner
Amazon.com
1K+
$24.99
STAR BRITE Star Tron Enzyme Fuel Treatment - Concentrated Formula 32 Fl. Oz. - Treats Up To 512 Gallons - Fuel Stabilizer & Treatment, Gasoline
Amazon.com
3K+
$24.99
STAR BRITE Star Tron Enzyme Fuel Treatment - Concentrated Formula 32 Fl. Oz. - Treats Up To 512 Gallons - Fuel Stabilizer & Treatment, Gasoline
Amazon.com
3K+
$67.19
1 Gallon Fuel System Cleaner - Hot Shot's Secret Diesel Extreme Fuel System Additive | Hot Shot's Secret P040401G
Summit Racing
$67.19
1 Gallon Fuel System Cleaner - Hot Shot's Secret Diesel Extreme Fuel System Additive | Hot Shot's Secret P040401G
Summit Racing
$99.95
Klock Werks Engine Works Motor Cleaner Gal
J&P Cycles
$99.95
Klock Werks Engine Works Motor Cleaner Gal
J&P Cycles
$39.40
Marvel Mystery Oil Oil Additive: Motor Treatment, 1 Gal Container Size Model: MM14R
Grainger
592
$39.40
Marvel Mystery Oil Oil Additive: Motor Treatment, 1 Gal Container Size Model: MM14R
Grainger
592
$7.96
Gunk Engine Degreaser 17 Oz Liquid Sweet Aromatic Cream FEB1/6
DkHardware.com
297
$7.96
Gunk Engine Degreaser 17 Oz Liquid Sweet Aromatic Cream FEB1/6
DkHardware.com
297
$19.78
Zmax Micro-Lubricant Engine Treatment Formula, 12 Oz Or 354 Ml
Walmart
22
$19.78
Zmax Micro-Lubricant Engine Treatment Formula, 12 Oz Or 354 Ml
Walmart
22
$34.60
Slick 50 Engine Treatment: Synthetic Engine Treatment, 15 Fl Oz Container Size Model: 75001
Grainger
306
$34.60
Slick 50 Engine Treatment: Synthetic Engine Treatment, 15 Fl Oz Container Size Model: 75001
Grainger
306
$35.83
$50.11
CRC Salt Terminator Engine Flush, Cleaner, And Corrosion Inhibitor, 1 Gallon, Dissolves Salt And Leaves A Protective Coating
Amazon.com
1K+
Free shipping
28% off
$35.83
$50.11
CRC Salt Terminator Engine Flush, Cleaner, And Corrosion Inhibitor, 1 Gallon, Dissolves Salt And Leaves A Protective Coating
Amazon.com
1K+
Top 10 Best Engine Cleaner (2025)
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Top 5 Best Engine Flushes Review in 2026
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LIQUI MOLY Diesel Engine System Cleaner (21491) EN
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3 Additives That Will Make Your Car Last Twice as Long
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The BEST ADDITIVES for Your Diesel Engine!
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Shop best engine cleaner additive

Sponsored
About our ads
$19.49
Hot Shot's Secret STICTION ELIMINATOR Engine Oil Additive- 16 OZ
D&J Precision Machine
3K+
$19.49
Hot Shot's Secret STICTION ELIMINATOR Engine Oil Additive- 16 OZ
D&J Precision Machine
3K+
$23.99
Hot Shot's Secret DIESEL EXTREME Injector Cleaner & Cetane Boost - .95L CANADIAN
D&J Precision Machine
$23.99
Hot Shot's Secret DIESEL EXTREME Injector Cleaner & Cetane Boost - .95L CANADIAN
D&J Precision Machine
$39.99
Hot Shot's Secret DIESEL EXTREME Injector Cleaner & Cetane Boost - 64 OZ
D&J Precision Machine
4K+
$39.99
Hot Shot's Secret DIESEL EXTREME Injector Cleaner & Cetane Boost - 64 OZ
D&J Precision Machine
4K+
$79.99
Hot Shot's Secret DIESEL EXTREME Injector Cleaner & Cetane Boost - 1 GALLON
D&J Precision Machine
5K+
$79.99
Hot Shot's Secret DIESEL EXTREME Injector Cleaner & Cetane Boost - 1 GALLON
D&J Precision Machine
5K+
$15.26
Slick 50 Original Engine Treatment | 32 Oz., Single
Amazon.com
639
$15.26
Slick 50 Original Engine Treatment | 32 Oz., Single
Amazon.com
639
$15.39
Lucas Oil 16 Oz. Engine Treatment LUCA10016
DkHardware.com
52
$15.39
Lucas Oil 16 Oz. Engine Treatment LUCA10016
DkHardware.com
52
$14.79
$18.99
Star Tron Enzyme Fuel Treatment - Small Engine Formula - 16 Oz Treats Up To 96 Gals, Gas Additive Rejuvenates & Stabilizes Old Gasoline, Cures &
Amazon.com
765
22% off
$14.79
$18.99
Star Tron Enzyme Fuel Treatment - Small Engine Formula - 16 Oz Treats Up To 96 Gals, Gas Additive Rejuvenates & Stabilizes Old Gasoline, Cures &
Amazon.com
765
$72.00
$95.88
STA-BIL Fast Fix - Small Engine Treatment, Cleans Carburetors & Injectors, Fixes Rough Running Engines, Eliminates Water, Carb Cleaner & Fuel Injector
Amazon.com
5K+
Free shipping
24% off
$72.00
$95.88
STA-BIL Fast Fix - Small Engine Treatment, Cleans Carburetors & Injectors, Fixes Rough Running Engines, Eliminates Water, Carb Cleaner & Fuel Injector
Amazon.com
5K+
$10.64
Marvel Mystery Oil Oil Additive: Motor Treatment, 32 Fl Oz Container Size Model: MM13R
Grainger
2K+
$10.64
Marvel Mystery Oil Oil Additive: Motor Treatment, 32 Fl Oz Container Size Model: MM13R
Grainger
2K+
$82.59
Hot Shot's Secret Diesel Duo - Stiction Eliminator And Diesel Extreme 2 Quarts Each
Amazon.com
1K+
Free shipping
$82.59
Hot Shot's Secret Diesel Duo - Stiction Eliminator And Diesel Extreme 2 Quarts Each
Amazon.com
1K+
$178.11
LIQUI MOLY Dijectron Additive - Gasoline Direct Injection (GDI) Cleaner Lqm22076
Extreme Power House
53
$178.11
LIQUI MOLY Dijectron Additive - Gasoline Direct Injection (GDI) Cleaner Lqm22076
Extreme Power House
53
$7.99
Gunk FEB-1: Solder Seal Gunk Foamy Engine Brite Engine Cleaner
Summit Racing
1
$7.99
Gunk FEB-1: Solder Seal Gunk Foamy Engine Brite Engine Cleaner
Summit Racing
1
$34.99
Liqui Moly Cera Tec Engine Oil Additive (300Ml Can) - Lm20002
GenRacer
$34.99
Liqui Moly Cera Tec Engine Oil Additive (300Ml Can) - Lm20002
GenRacer
$6.81
STP Oil Additive: Oil Treatment, 15 Fl Oz Container Size Model: 66079-0(8262)
Grainger
252
$6.81
STP Oil Additive: Oil Treatment, 15 Fl Oz Container Size Model: 66079-0(8262)
Grainger
252
$31.86
$50.98
Tribotex Small Oil Additive Engine Treatment: Add To Engine Oil - Makes High New
topbraggrealtyus
37% off
$31.86
$50.98
Tribotex Small Oil Additive Engine Treatment: Add To Engine Oil - Makes High New
topbraggrealtyus
$17.37
Gunk Engine Cleaner Degreaser: 15 Oz Aerosol Can EBGEL-XCP1
DkHardware.com
$17.37
Gunk Engine Cleaner Degreaser: 15 Oz Aerosol Can EBGEL-XCP1
DkHardware.com
$7.52
Marvel Mystery Oil Oil Additive: Motor Treatment, 16 Fl Oz Container Size Model: MM12R
Grainger
1K+
$7.52
Marvel Mystery Oil Oil Additive: Motor Treatment, 16 Fl Oz Container Size Model: MM12R
Grainger
1K+
$88.20
$99.99
Kroil Kreen All-In-One Gas & Oil Treatment - Engine Cleaner Additive - Improves Compression, Reduces Oil Use & Removes Carbon Deposits - For Gas &
Amazon.com
6
Free shipping
11% off
$88.20
$99.99
Kroil Kreen All-In-One Gas & Oil Treatment - Engine Cleaner Additive - Improves Compression, Reduces Oil Use & Removes Carbon Deposits - For Gas &
Amazon.com
6