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Additives in Oils and Fluids

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Valvoline Restore & Protect Fuel System Cleaner - 12oz, 25204 $11.97 99.8 ¢/oz

Valvoline Restore & Protect Fuel System Cleaner - 12oz, 25204
Sponsored
current price $11.97
99.8 ¢/oz

Valvoline Restore & Protect Fuel System Cleaner - 12oz, 25204

5 out of 5 Stars. 2 reviews
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Shipping, arrives today

Dura Lube Catalytic & Exhaust System Treatment Emissions Additive Automotive Converter Cleaner 16 Fl oz $19.54 $1.22/fl oz

Dura Lube Catalytic & Exhaust System Treatment Emissions Additive Automotive Converter Cleaner 16 Fl oz
Sponsored
current price $19.54
$1.22/fl oz
Options from $19.54 – $468.96

Dura Lube Catalytic & Exhaust System Treatment Emissions Additive Automotive Converter Cleaner 16 Fl oz

4.2 out of 5 Stars. 802 reviews
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100+ bought since yesterday Chevron Techron High Mileage Fuel System Cleaner, 12 oz $10.38 86.5 ¢/fl oz

100+ bought since yesterday
Chevron Techron High Mileage Fuel System Cleaner, 12 oz
Sponsored
current price $10.38
86.5 ¢/fl oz
Options from $10.38 – $249.12

Chevron Techron High Mileage Fuel System Cleaner, 12 oz

4.7 out of 5 Stars. 426 reviews
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Diesel Injector & DPF Flush 64-OZ $42.87 67.0 ¢/oz

Diesel Injector & DPF Flush 64-OZ
Sponsored
current price $42.87
67.0 ¢/oz
Options from $42.87 – $257.22

Diesel Injector & DPF Flush 64-OZ

4.8 out of 5 Stars. 45 reviews
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Free shipping, arrives Wed, Jul 15

Overall pick Sea Foam SF16 Motor Treatment Automotive Additive, 16 oz $8.48 Was $9.99 53.0 ¢/fl oz

Overall pick
Sea Foam SF16 Motor Treatment Automotive Additive, 16 oz
Available in additional 5 options
current price Now $8.48, Was $9.99
53.0 ¢/fl oz
Options from $8.48 – $203.52

Sea Foam SF16 Motor Treatment Automotive Additive, 16 oz

4.8 out of 5 Stars. 6197 reviews
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100+ bought since yesterday Chevron Techron Complete Fuel System Cleaner, 10 oz $8.38 83.8 ¢/fl oz

100+ bought since yesterday
Chevron Techron Complete Fuel System Cleaner, 10 oz
current price $8.38
83.8 ¢/fl oz

Chevron Techron Complete Fuel System Cleaner, 10 oz

4.8 out of 5 Stars. 1727 reviews
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Low stock

100+ bought since yesterday Marvel Mystery Oil - Oil Enhancer and Fuel Treatment, 32 oz. $6.58 20.6 ¢/fl oz

100+ bought since yesterday
Marvel Mystery Oil - Oil Enhancer and Fuel Treatment, 32 oz.
Available in additional 4 options
current price $6.58
20.6 ¢/fl oz
Options from $6.58 – $78.96

Marvel Mystery Oil - Oil Enhancer and Fuel Treatment, 32 oz.

4.8 out of 5 Stars. 1149 reviews
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100+ bought since yesterday Lucas Oil 10020 Fuel Treatment 5.25 Ounce $5.78 $1.10/fl oz

100+ bought since yesterday
Lucas Oil 10020 Fuel Treatment 5.25 Ounce
Available in additional 5 options
current price $5.78
$1.10/fl oz
Options from $5.78 – $138.96

Lucas Oil 10020 Fuel Treatment 5.25 Ounce

4.8 out of 5 Stars. 1768 reviews
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Best seller Royal Purple Max-Clean Fuel System Cleaner & Stabilizer, 20 fl oz $11.64 Was $15.99 58.2 ¢/fl oz

Best seller
Royal Purple Max-Clean Fuel System Cleaner & Stabilizer, 20 fl oz
Available in additional 5 options
current price Now $11.64, Was $15.99
58.2 ¢/fl oz
Options from $11.64 – $279.36

Royal Purple Max-Clean Fuel System Cleaner & Stabilizer, 20 fl oz

4.6 out of 5 Stars. 897 reviews
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Berryman B-12 Chemtool Fuel System Cleaner, 15 oz $4.97 33.1 ¢/oz

Berryman B-12 Chemtool Fuel System Cleaner, 15 oz
Available in additional 5 options
current price $4.97
33.1 ¢/oz
Options from $4.97 – $119.28

Berryman B-12 Chemtool Fuel System Cleaner, 15 oz

4.8 out of 5 Stars. 1492 reviews
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Delivery as soon as 25 minsPickup as soon as 4pm

100+ bought since yesterday Chevron Techron Complete Fuel System Cleaner, 10 oz $8.38 83.8 ¢/fl oz

100+ bought since yesterday
Chevron Techron Complete Fuel System Cleaner, 10 oz
Sponsored
current price $8.38
83.8 ¢/fl oz

Chevron Techron Complete Fuel System Cleaner, 10 oz

4.8 out of 5 Stars. 1727 reviews
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Low stock

Archoil AR6500 Diesel Treatment (40 oz) Two Pack - Treats 800 Gallons - Additive for All Diesel Vehicles $79.90

Archoil AR6500 Diesel Treatment (40 oz) Two Pack - Treats 800 Gallons - Additive for All Diesel Vehicles
Sponsored
current price $79.90

Archoil AR6500 Diesel Treatment (40 oz) Two Pack - Treats 800 Gallons - Additive for All Diesel Vehicles

4.8 out of 5 Stars. 1015 reviews
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Free shipping, arrives tomorrow

Sea Foam High Mileage Motor Treatment $11.88 Was $13.99 74.3 ¢/fl oz

Sea Foam High Mileage Motor Treatment
Available in additional 5 options
current price Now $11.88, Was $13.99
74.3 ¢/fl oz
Options from $11.88 – $142.56

Sea Foam High Mileage Motor Treatment

4.8 out of 5 Stars. 932 reviews
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Bar's Leaks 1334 One Seal Stop Leak Automotive Additive, 11 oz $6.36 57.8 ¢/fl oz

Bar's Leaks 1334 One Seal Stop Leak Automotive Additive, 11 oz
Available in additional 6 options
current price $6.36
57.8 ¢/fl oz
Options from $6.36 – $152.64

Bar's Leaks 1334 One Seal Stop Leak Automotive Additive, 11 oz

4.4 out of 5 Stars. 671 reviews
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100+ bought since yesterday Chevron Techron High Mileage Fuel System Cleaner, 12 oz $10.38 86.5 ¢/fl oz

100+ bought since yesterday
Chevron Techron High Mileage Fuel System Cleaner, 12 oz
Available in additional 6 options
current price $10.38
86.5 ¢/fl oz
Options from $10.38 – $249.12

Chevron Techron High Mileage Fuel System Cleaner, 12 oz

4.7 out of 5 Stars. 426 reviews
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Best seller Cataclean Fuel & Exhaust System Cleaner, Automotive Additive, Catalytic Converter Restorer, 16 oz $27.94 $1.75/oz

Best seller
Cataclean Fuel & Exhaust System Cleaner, Automotive Additive, Catalytic Converter Restorer, 16 oz
Available in additional 5 options
current price $27.94
$1.75/oz
Options from $27.94 – $77.98

Cataclean Fuel & Exhaust System Cleaner, Automotive Additive, Catalytic Converter Restorer, 16 oz

4.4 out of 5 Stars. 232 reviews
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Rislone 4102 Engine Treatment Automotive Additive, 16.9 oz $6.88 40.7 ¢/fl oz

Rislone 4102 Engine Treatment Automotive Additive, 16.9 oz
Available in additional 5 options
current price $6.88
40.7 ¢/fl oz
Options from $6.88 – $152.64

Rislone 4102 Engine Treatment Automotive Additive, 16.9 oz

4.8 out of 5 Stars. 580 reviews
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Delivery as soon as 25 minsShipping, arrives todayPickup as soon as 4pm

Best seller Lucas Oil Heavy Duty Oil Stabilizer for Engines, 32 oz $14.44 45.1 ¢/fl oz

Best seller
Lucas Oil Heavy Duty Oil Stabilizer for Engines, 32 oz
Available in additional 5 options
current price $14.44
45.1 ¢/fl oz
Options from $14.44 – $346.56

Lucas Oil Heavy Duty Oil Stabilizer for Engines, 32 oz

4.8 out of 5 Stars. 1081 reviews
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Marvel Mystery Oil - Automotive Additive Oil Enhancer and Fuel Treatment , 64 oz, Works with Vehicles with Gasoline and Diesel Engines $12.97 20.3 ¢/fl oz

Marvel Mystery Oil - Automotive Additive Oil Enhancer and Fuel Treatment , 64 oz, Works with Vehicles with Gasoline and Diesel Engines
Available in additional 4 options
current price $12.97
20.3 ¢/fl oz
Options from $12.97 – $155.64

Marvel Mystery Oil - Automotive Additive Oil Enhancer and Fuel Treatment , 64 oz, Works with Vehicles with Gasoline and Diesel Engines

4.7 out of 5 Stars. 143 reviews
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Restore 8-Cylinder Formula Engine Restorer and Lubricant - 16 fl oz $11.88 74.3 ¢/oz

Restore 8-Cylinder Formula Engine Restorer and Lubricant - 16 fl oz
Available in additional 4 options
current price $11.88
74.3 ¢/oz
Options from $11.88 – $142.56

Restore 8-Cylinder Formula Engine Restorer and Lubricant - 16 fl oz

4.7 out of 5 Stars. 190 reviews
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Diesel Kleen + Cetane Boost 64-oz 6/1 per Case $21.25 Was $58.97 33.2 ¢/fl oz

Diesel Kleen + Cetane Boost 64-oz 6/1 per Case
Sponsored
current price Now $21.25, Was $58.97
33.2 ¢/fl oz
Options from $21.25 – $127.50

Diesel Kleen + Cetane Boost 64-oz 6/1 per Case

4.7 out of 5 Stars. 347 reviews
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Hot Shot's Secret Diesel Extreme Fuel Additive, 32 oz for Diesel engines. $18.25 57.0 ¢/fl oz

Hot Shot's Secret Diesel Extreme Fuel Additive, 32 oz for Diesel engines.
Sponsored
current price $18.25
57.0 ¢/fl oz
Options from $18.25 – $219.00

Hot Shot's Secret Diesel Extreme Fuel Additive, 32 oz for Diesel engines.

4.7 out of 5 Stars. 304 reviews
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100+ bought since yesterday Super Tech Engine Starting Fluid - 11 fl oz (1 Count) $3.97 36.1 ¢/oz

100+ bought since yesterday
Super Tech Engine Starting Fluid - 11 fl oz (1 Count)
Available in additional 5 options
current price $3.97
36.1 ¢/oz
Options from $3.97 – $95.28

Super Tech Engine Starting Fluid - 11 fl oz (1 Count)

4.7 out of 5 Stars. 781 reviews
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Super Tech Universal Motor Treatment for Gas, Diesel, and Oil, Truck and Car 16 fl oz $4.64 29.0 ¢/fl oz

Super Tech Universal Motor Treatment for Gas, Diesel, and Oil, Truck and Car 16 fl oz
Available in additional 5 options
current price $4.64
29.0 ¢/fl oz
Options from $4.64 – $111.36

Super Tech Universal Motor Treatment for Gas, Diesel, and Oil, Truck and Car 16 fl oz

4.6 out of 5 Stars. 331 reviews
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Red Line 60103 SI-1 Complete Fuel System Cleaner - 15 Ounce $17.99

Red Line 60103 SI-1 Complete Fuel System Cleaner - 15 Ounce
current price $17.99

Red Line 60103 SI-1 Complete Fuel System Cleaner - 15 Ounce

4.5 out of 5 Stars. 160 reviews
Free shipping, arrives in 3+ days

Super Tech WM64695 Bottle, 6 fl oz 1 Pack $1.98 33.0 ¢/fl oz

Super Tech WM64695 Bottle, 6 fl oz 1 Pack
Available in additional 5 options
current price $1.98
33.0 ¢/fl oz
Options from $1.98 – $47.52

Super Tech WM64695 Bottle, 6 fl oz 1 Pack

4.6 out of 5 Stars. 323 reviews
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Lucas 10009 Transmission Fix Automotive Performance Additive 24 Ounce - Stops Transmission Slips $14.44 60.2 ¢/fl oz

Lucas 10009 Transmission Fix Automotive Performance Additive 24 Ounce - Stops Transmission Slips
Available in additional 4 options
current price $14.44
60.2 ¢/fl oz
Options from $14.44 – $173.28

Lucas 10009 Transmission Fix Automotive Performance Additive 24 Ounce - Stops Transmission Slips

4.7 out of 5 Stars. 781 reviews
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Techron Concentrate Plus Complete Fuel System Cleaner 20oz bottle $15.99 Was $18.94 80.0 ¢/fl oz

Techron Concentrate Plus Complete Fuel System Cleaner 20oz bottle
Available in additional 5 options
current price Now $15.99, Was $18.94
80.0 ¢/fl oz
Options from $15.99 – $215.88

Techron Concentrate Plus Complete Fuel System Cleaner 20oz bottle

4.6 out of 5 Stars. 167 reviews
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Shipping, arrives in 3+ days
Low stock

STP High Mileage Oil Treatment and Stop Leak Additive, 15 fl oz $6.98 46.5 ¢/fl oz

STP High Mileage Oil Treatment and Stop Leak Additive, 15 fl oz
Available in additional 6 options
current price $6.98
46.5 ¢/fl oz
Options from $6.98 – $83.76

STP High Mileage Oil Treatment and Stop Leak Additive, 15 fl oz

4.6 out of 5 Stars. 501 reviews
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STP Synthetic Oil Treatment Engine Oil Additive, 15 fl oz $8.92 59.5 ¢/fl oz

STP Synthetic Oil Treatment Engine Oil Additive, 15 fl oz
Available in additional 4 options
current price $8.92
59.5 ¢/fl oz
Options from $8.92 – $107.04

STP Synthetic Oil Treatment Engine Oil Additive, 15 fl oz

4.8 out of 5 Stars. 164 reviews
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Shipping, arrives Wed, Jul 15

Dura Lube Engine Treatment, Automotive Oil Additive for Gas and Diesel Engines, 32 oz $15.97 49.9 ¢/fl oz

Dura Lube Engine Treatment, Automotive Oil Additive for Gas and Diesel Engines, 32 oz
Sponsored
current price $15.97
49.9 ¢/fl oz
Options from $15.97 – $95.82

Dura Lube Engine Treatment, Automotive Oil Additive for Gas and Diesel Engines, 32 oz

4.7 out of 5 Stars. 248 reviews
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Diesel Injector & DPF Flush 26-oz $24.47 94.1 ¢/oz

Diesel Injector & DPF Flush 26-oz
Sponsored
current price $24.47
94.1 ¢/oz
Options from $24.47 – $587.28

Diesel Injector & DPF Flush 26-oz

5 out of 5 Stars. 33 reviews
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Dura Lube Catalytic & Exhaust System Treatment Emissions Additive Automotive Converter Cleaner 16 Fl oz $19.54 $1.22/fl oz

Dura Lube Catalytic & Exhaust System Treatment Emissions Additive Automotive Converter Cleaner 16 Fl oz
Available in additional 5 options
current price $19.54
$1.22/fl oz
Options from $19.54 – $468.96

Dura Lube Catalytic & Exhaust System Treatment Emissions Additive Automotive Converter Cleaner 16 Fl oz

4.2 out of 5 Stars. 802 reviews
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Lucas Oil 10512 Deep Clean Fuel System Cleaner Performance Additive 16 Ounce $8.99 Was $12.59 56.2 ¢/fl oz

Lucas Oil 10512 Deep Clean Fuel System Cleaner Performance Additive 16 Ounce
Available in additional 6 options
current price Now $8.99, Was $12.59
56.2 ¢/fl oz
Options from $8.99 – $215.76

Lucas Oil 10512 Deep Clean Fuel System Cleaner Performance Additive 16 Ounce

4.7 out of 5 Stars. 311 reviews
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Sea Foam Fuel Injector Cleaner $5.24 Was $6.79 99.8 ¢/fl oz

Sea Foam Fuel Injector Cleaner
Available in additional 5 options
current price Now $5.24, Was $6.79
99.8 ¢/fl oz
Options from $5.24 – $125.76

Sea Foam Fuel Injector Cleaner

4.8 out of 5 Stars. 611 reviews
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Rislone 4416 High Mileage Ring Seal Smoke Repair Automotive Additive, 16 oz $7.24 45.3 ¢/fl oz

Rislone 4416 High Mileage Ring Seal Smoke Repair Automotive Additive, 16 oz
Available in additional 5 options
current price $7.24
45.3 ¢/fl oz
Options from $7.24 – $173.76

Rislone 4416 High Mileage Ring Seal Smoke Repair Automotive Additive, 16 oz

4.6 out of 5 Stars. 382 reviews
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Royal Purple Max-Atomizer 18000 Fuel Injector Cleaner, 6 fl oz $6.48 Was $8.66 $1.08/fl oz

Royal Purple Max-Atomizer 18000 Fuel Injector Cleaner, 6 fl oz
Available in additional 5 options
current price Now $6.48, Was $8.66
$1.08/fl oz
Options from $6.48 – $155.52

Royal Purple Max-Atomizer 18000 Fuel Injector Cleaner, 6 fl oz

4.7 out of 5 Stars. 226 reviews
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(3 pack) Lucas Oil Products High Mileage Oil Stablizer (1 qt.) $46.44 48.4 ¢/fl oz

(3 pack) Lucas Oil Products High Mileage Oil Stablizer (1 qt.)
Available in additional 5 options
current price $46.44
48.4 ¢/fl oz
Options from $15.48

(3 pack) Lucas Oil Products High Mileage Oil Stablizer (1 qt.)

4.8 out of 5 Stars. 985 reviews
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Delivery as soon as 25 minsFree shipping, arrives todayFree pickup as soon as 5pm

(2 pack) Super Tech Carburetor and Air Intake Cleaner, 12.5 oz $5.94 23.8 ¢/oz

(2 pack) Super Tech Carburetor and Air Intake Cleaner, 12.5 oz
Available in additional 5 options
current price $5.94
23.8 ¢/oz
Options from $5.94 – $71.28

(2 pack) Super Tech Carburetor and Air Intake Cleaner, 12.5 oz

4.7 out of 5 Stars. 824 reviews
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Shipping, arrives Wed, Jul 15

Iso-HEET Fuel-Line Antifreeze and Injector Cleaner 12 fl. oz - Premium Water Absorbing Formula $2.98 Was $3.95

Iso-HEET Fuel-Line Antifreeze and Injector Cleaner 12 fl. oz - Premium Water Absorbing Formula
Available in additional 3 options
current price Now $2.98, Was $3.95
Options from $2.98 – $11.92

Iso-HEET Fuel-Line Antifreeze and Injector Cleaner 12 fl. oz - Premium Water Absorbing Formula

4.8 out of 5 Stars. 776 reviews
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STP Gas Treatment For Any Gasoline Engine - 5.25 fl oz (2 Count) $4.98 47.4 ¢/fl oz

STP Gas Treatment For Any Gasoline Engine - 5.25 fl oz (2 Count)
Available in additional 5 options
current price $4.98
47.4 ¢/fl oz
Options from $4.98 – $119.52

STP Gas Treatment For Any Gasoline Engine - 5.25 fl oz (2 Count)

4.7 out of 5 Stars. 460 reviews
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Gumout Multi-System Tune-up 16 oz Automotive Additive - 510011W $7.64 47.8 ¢/fl oz

Gumout Multi-System Tune-up 16 oz Automotive Additive - 510011W
Available in additional 5 options
current price $7.64
47.8 ¢/fl oz
Options from $7.64 – $45.84

Gumout Multi-System Tune-up 16 oz Automotive Additive - 510011W

4.7 out of 5 Stars. 466 reviews
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Niteo Products Motor Medic Engine Flush Additive, 32 fl oz – Cleans Cars, Trucks, SUVs $6.78 21.2 ¢/fl oz

Niteo Products Motor Medic Engine Flush Additive, 32 fl oz – Cleans Cars, Trucks, SUVs
Available in additional 4 options
current price $6.78
21.2 ¢/fl oz
Options from $6.78 – $81.36

Niteo Products Motor Medic Engine Flush Additive, 32 fl oz – Cleans Cars, Trucks, SUVs

4.7 out of 5 Stars. 229 reviews
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Mechanic in a Bottle Fuel System Fix All Fuel Additive, 8 oz bottle $7.84 98.0 ¢/fl oz

Mechanic in a Bottle Fuel System Fix All Fuel Additive, 8 oz bottle
Available in additional 2 options
current price $7.84
98.0 ¢/fl oz
Options from $7.84 – $23.52

Mechanic in a Bottle Fuel System Fix All Fuel Additive, 8 oz bottle

4.6 out of 5 Stars. 309 reviews
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Super Tech Fuel Injector Cleaner Automotive Additive, 6 fl oz $2.18 Was $2.67 36.3 ¢/fl oz

Super Tech Fuel Injector Cleaner Automotive Additive, 6 fl oz
Available in additional 5 options
current price Now $2.18, Was $2.67
36.3 ¢/fl oz
Options from $2.18 – $52.32

Super Tech Fuel Injector Cleaner Automotive Additive, 6 fl oz

4.6 out of 5 Stars. 328 reviews
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STP High Viscosity Oil Treatment 15 Fluid Ounces for Conventional or Synthetic Oils $4.98 33.2 ¢/fl oz

STP High Viscosity Oil Treatment 15 Fluid Ounces for Conventional or Synthetic Oils
Available in additional 5 options
current price $4.98
33.2 ¢/fl oz
Options from $4.98 – $119.52

STP High Viscosity Oil Treatment 15 Fluid Ounces for Conventional or Synthetic Oils

4.8 out of 5 Stars. 323 reviews
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Lucas Oil 10013 Fuel Treatment Gallon 7.5 Pound $31.44 Was $39.49 24.6 ¢/fl oz

Lucas Oil 10013 Fuel Treatment Gallon 7.5 Pound
Available in additional 3 options
current price Now $31.44, Was $39.49
24.6 ¢/fl oz
Options from $31.44 – $188.64

Lucas Oil 10013 Fuel Treatment Gallon 7.5 Pound

4.8 out of 5 Stars. 1140 reviews
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HEET Gas-Line Antifreeze & Water Remover 12 oz for 4-Cycle Engines $2.08 Was $2.99 17.3 ¢/fl oz

HEET Gas-Line Antifreeze & Water Remover 12 oz for 4-Cycle Engines
Available in additional 3 options
current price Now $2.08, Was $2.99
17.3 ¢/fl oz
Options from $2.08 – $8.32

HEET Gas-Line Antifreeze & Water Remover 12 oz for 4-Cycle Engines

4.7 out of 5 Stars. 579 reviews
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STP High Mileage Fuel Injector & Carburetor Cleaner - 5.25 fl oz (2 Count) $5.28 50.3 ¢/fl oz

STP High Mileage Fuel Injector & Carburetor Cleaner - 5.25 fl oz (2 Count)
Available in additional 5 options
current price $5.28
50.3 ¢/fl oz
Options from $5.28 – $126.72

STP High Mileage Fuel Injector & Carburetor Cleaner - 5.25 fl oz (2 Count)

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Techron Concentrate Plus 12oz $17.49

Techron Concentrate Plus 12oz
current price $17.49

Techron Concentrate Plus 12oz

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About Additives in Oils and Fluids

Automotive additives help you match the right formula to your vehicle’s fuel, oil, transmission, or coolant system. You can compare additive type, engine compatibility, mileage fit, and treatment purpose before you choose.

How to choose automotive additives by additive type

You should start with the system you want to support, because each formula fits a different part of your vehicle. You’ll usually compare fuel additives, oil additives, transmission additives, and coolant additives in this category.

Fuel additives and fuel system cleaner options fit your gasoline or diesel tank during routine fill-ups. You can choose oil additives for your crankcase and select transmission additives based on your transmission fluid type.

Coolant additives fit your cooling system and help you maintain temperature stability, corrosion control, and system cleanliness. You’ll want to match the formula to the fluid reservoir listed on your bottle label.

  • You can narrow choices by fuel, oil, transmission, or coolant use.
  • You can compare formulas for high mileage or standard vehicles.
  • You can select treatments aimed at cleanliness, friction reduction, or leak stopping.
  • You can check whether the formula fits gasoline, diesel, or hybrid applications.

Choosing engine additives and compatibility details

You should check your engine type before you choose engine additives, because gas and diesel formulas aren’t always interchangeable. You’ll also want to confirm whether your vehicle uses a turbocharged setup or hybrid system.

Gasoline formulas often feature labels for spark-ignition engines, while diesel formulas target compression-ignition needs. You can look for wording that clearly matches your fuel type and application method.

Hybrid vehicles may still use gasoline engines, but you should verify the product label before adding any treatment. You can also check whether the formula mentions start-stop driving or mixed driving patterns.

You may also compare packaging for API-related language or manufacturer approval references when warranty compliance matters to you. You should always confirm your owner’s manual requirements before using any additive in a covered vehicle.

What to look for in oil and fuel additives

You can compare oil and fuel additives by the issue you want to address in everyday driving. You may be looking for engine cleanliness, friction reduction, fuel economy support, or leak stopping.

If your vehicle feels rough at idle or less responsive, you may prefer a fuel system cleaner or injector-focused formula. If your older engine uses oil between changes, you may look for high mileage oil treatments.

For transmission additives, you’ll want to check fluid compatibility and the intended use on the label. Some formulas target smoother shifting, while others focus on seal conditioning or fluid performance support.

You should also compare treatment ratio and application frequency before you buy. You may see directions listed by ounces per gallon, ounces per quart, or one bottle per service interval.

Higher treatment ratios can matter when you maintain trucks, multiple vehicles, or larger fluid capacities. You’ll want directions that match your maintenance routine, because some formulas are one-time treatments and others are repeat-use options.

Matching automotive additives to mileage and driving needs

You can use vehicle mileage as a practical filter when you compare automotive additives. High mileage formulas are usually labeled for older engines, while standard formulas fit regular maintenance plans.

If your vehicle has many road miles, you may focus on formulas aimed at seal conditioning, deposit control, or friction reduction. You can pair that search with oil additives or transmission additives, depending on the system involved.

For daily commuting, you may prefer fuel additives that fit consistent fill-up habits and straightforward dosing. If you tow, drive long highway distances, or run a diesel truck, you may compare larger bottles and diesel-specific treatments.

You can also measure convenience by bottle size, pour spout design, and whether the formula is a single application. Those details help you handle routine maintenance with less guesswork at the garage or driveway.

How to compare application details before you choose

You should read the label for fluid capacity guidance, because treatment amounts can vary widely across formulas. You’ll often find directions tied to gallons of fuel, quarts of oil, or full transmission service intervals.

You can use some engine additives for preventive maintenance, or choose others for specific performance concerns. You can compare whether you need a seasonal treatment, an every-fill option, or a product for scheduled service.

You may also look for clear instructions about when to add the formula during your maintenance routine. That makes it easier for you to match the product to an oil change, fuel fill-up, or fluid replacement.

When you compare additive type, compatibility, mileage fit, and treatment directions, you can choose with more confidence. You’ll end up with automotive additives that align with your vehicle, your maintenance schedule, and your driving habits.