Top Rated Products in Additives(62)
Uses item details. Price when purchased online
500+ bought since yesterday Sea Foam SF16 Motor Treatment Automotive Additive, 16 oz From $8.48

5 options
Available in additional 5 optionsFrom$848
Sea Foam SF16 Motor Treatment Automotive Additive, 16 oz
61314.8 out of 5 Stars. 6131 reviews
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100+ bought since yesterday Lucas Oil 10020 Fuel Treatment 5.25 Ounce From $5.78

5 options
Available in additional 5 optionsFrom$578
Lucas Oil 10020 Fuel Treatment 5.25 Ounce
17194.8 out of 5 Stars. 1719 reviews
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50+ bought since yesterday STP Super Concentrated Gas Treatment 5.25 fl oz - Automotive Fuel Additive for Cars and Boats From $2.93

5 options
Available in additional 5 optionsFrom$293
STP Super Concentrated Gas Treatment 5.25 fl oz - Automotive Fuel Additive for Cars and Boats
4814.7 out of 5 Stars. 481 reviews
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Best seller STP High Mileage Fuel Injector and Carburetor Cleaner - 5.25 fl oz From $2.88

5 options
Available in additional 5 optionsFrom$288
STP High Mileage Fuel Injector and Carburetor Cleaner - 5.25 fl oz
2054.7 out of 5 Stars. 205 reviews
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Best seller STP High Mileage Fuel Injector & Carburetor Cleaner - 5.25 fl oz (2 Count) From $5.28

5 options
Available in additional 5 optionsFrom$528
STP High Mileage Fuel Injector & Carburetor Cleaner - 5.25 fl oz (2 Count)
5214.7 out of 5 Stars. 521 reviews
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Gumout High Mileage Fuel Injector Cleaner Additive, 6 oz - 510013 From $3.68

5 options
Available in additional 5 optionsFrom$368
Gumout High Mileage Fuel Injector Cleaner Additive, 6 oz - 510013
4214.7 out of 5 Stars. 421 reviews
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Best seller STP Gas Treatment For Any Gasoline Engine - 5.25 fl oz (2 Count) From $4.98

5 options
Available in additional 5 optionsFrom$498
STP Gas Treatment For Any Gasoline Engine - 5.25 fl oz (2 Count)
4494.7 out of 5 Stars. 449 reviews
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Super Tech Fuel Injector Cleaner Automotive Additive, 6 fl oz Was $2.67

5 options
Available in additional 5 optionsSuper Tech Fuel Injector Cleaner Automotive Additive, 6 fl oz
3254.6 out of 5 Stars. 325 reviews
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Super Tech Universal Motor Treatment for Gas, Diesel, and Oil, Truck and Car 16 fl oz From $4.64

5 options
Available in additional 5 optionsFrom$464
Super Tech Universal Motor Treatment for Gas, Diesel, and Oil, Truck and Car 16 fl oz
3284.6 out of 5 Stars. 328 reviews
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Top rated for fuel economy STP Octane Booster 5.25 fl oz From $4.48

5 options
Available in additional 5 optionsFrom$448
STP Octane Booster 5.25 fl oz
2684.6 out of 5 Stars. 268 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 From $12.97

4 options
Available in additional 4 optionsFrom$1297
Marvel Mystery Oil - Automotive Additive Oil Enhancer and Fuel Treatment , 64 oz, Works with Vehicles with Gasoline and Diesel Engines
1404.7 out of 5 Stars. 140 reviews
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Gumout Multi-System Tune-up 16 oz Automotive Additive - 510011W From $7.64

5 options
Available in additional 5 optionsFrom$764
Gumout Multi-System Tune-up 16 oz Automotive Additive - 510011W
4594.7 out of 5 Stars. 459 reviews
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STP Super Concentrated Fuel Injector Cleaner 5.25 FL OZ For Automotive Additive From $3.38

5 options
Available in additional 5 optionsFrom$338
STP Super Concentrated Fuel Injector Cleaner 5.25 FL OZ For Automotive Additive
1904.5 out of 5 Stars. 190 reviews
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Rislone 4102 Engine Treatment Automotive Additive, 16.9 oz From $6.36

5 options
Available in additional 5 optionsFrom$636
Rislone 4102 Engine Treatment Automotive Additive, 16.9 oz
5654.7 out of 5 Stars. 565 reviews
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Super Tech Motor Oil Additive, 32 oz From $10.42

5 options
Available in additional 5 optionsFrom$1042
Super Tech Motor Oil Additive, 32 oz
1194.7 out of 5 Stars. 119 reviews
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Sea Foam Fuel Additive SF16 - Universal Automotive Treatment - 16 oz Bottle $15.99

$1599
current price $15.99Sea Foam Fuel Additive SF16 - Universal Automotive Treatment - 16 oz Bottle
104.5 out of 5 Stars. 10 reviews
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Opti-Lube XPD Diesel Fuel Improver Automotive Additive, Diesel Fuel Additive $81.00

$8100
current price $81.00Opti-Lube XPD Diesel Fuel Improver Automotive Additive, Diesel Fuel Additive
494.8 out of 5 Stars. 49 reviews
Star brite Star Tron Enzyme Fuel Treatment - Classic Gas Formula $12.42 Was $15.26 77.6 ¢/fl oz

Now$1242
current price Now $12.42, Was $15.26$15.26
77.6 ¢/fl oz
Star brite Star Tron Enzyme Fuel Treatment - Classic Gas Formula
25 out of 5 Stars. 2 reviews
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BG Advanced Formula MOA EPR_115 Automotive Additive, 32 oz $38.50

$3850
current price $38.50BG Advanced Formula MOA EPR_115 Automotive Additive, 32 oz
194.3 out of 5 Stars. 19 reviews
Liqui Moly 20234 Fuel Performance Enhancers Automotive Additive Can, 8.4 Fl oz $18.87 Was $31.95

Now$1887
current price Now $18.87, Was $31.95$31.95
Liqui Moly 20234 Fuel Performance Enhancers Automotive Additive Can, 8.4 Fl oz
25 out of 5 Stars. 2 reviews
STP 1 Tank Tune Up Fuel Additive – 12 Fl Oz From $15.97

4 options
Available in additional 4 optionsFrom$1597
STP 1 Tank Tune Up Fuel Additive – 12 Fl Oz
2364.7 out of 5 Stars. 236 reviews
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Marvel Mystery Oil Marvel Oil Enhancer & Fuel Treatment Automotive Additive, 16 oz

Marvel Mystery Oil Marvel Oil Enhancer & Fuel Treatment Automotive Additive, 16 oz
15 out of 5 Stars. 1 reviews
PowerPlus Lubricants Fuel Additive Alcohol Top Lube Scented 16oz Variety Pack $59.99

$5999
current price $59.99PowerPlus Lubricants Fuel Additive Alcohol Top Lube Scented 16oz Variety Pack
STP Complete Fuel System Cleaner Automotive Additive, 16 Ounce $21.70

$2170
current price $21.70STP Complete Fuel System Cleaner Automotive Additive, 16 Ounce
15 out of 5 Stars. 1 reviews
DWD2 Clean Metal? Conditioner - Engine Oil Additive, Friction Reducer 7 oz. | Motor Oil Additive | Nano-Technology | Reduce Heat and Friction | Enhance Engine Performance | Increase Fuel Economy Was $19.95

DWD2 Clean Metal? Conditioner - Engine Oil Additive, Friction Reducer 7 oz. | Motor Oil Additive | Nano-Technology | Reduce Heat and Friction | Enhance Engine Performance | Increase Fuel Economy
Red Line 70802 85 Plus Diesel Fuel Additives - 12 Ounce $13.69 Was $16.99

Now$1369
current price Now $13.69, Was $16.99$16.99
Red Line 70802 85 Plus Diesel Fuel Additives - 12 Ounce
Metal Lube Diesel Fuel Treatment Additive, Injector Cleaner 8 OZ 12 Pack From $44.00

2 options
Available in additional 2 optionsFrom$4400
Metal Lube Diesel Fuel Treatment Additive, Injector Cleaner 8 OZ 12 Pack
HKS 200 ml Add-II Engine Oil Additive $41.14

$4114
current price $41.14HKS 200 ml Add-II Engine Oil Additive
Red Line 85+ Diesel Fuel Additive - 12oz. - 70802 $119.12 $9.93/ca

$11912
current price $119.12$9.93/ca
Red Line 85+ Diesel Fuel Additive - 12oz. - 70802
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Xqxayjr under $5 Battery Reconditioning Fluid, 500ml Battery Recovery Fluid for Lead Acid Batteries, Battery Reconditioning Solution Additive for Car Motorcycle, with Tools Included $11.19 Was $12.99

Now$1119
current price Now $11.19, Was $12.99$12.99
Xqxayjr under $5 Battery Reconditioning Fluid, 500ml Battery Recovery Fluid for Lead Acid Batteries, Battery Reconditioning Solution Additive for Car Motorcycle, with Tools Included
Konghyp Automotive Additives – 100ml Formula to Increase Power, Improve Efficiency, and Maintain Engine Cleanliness, Essential for Optimal Vehicle Performance. Was $4.74

Konghyp Automotive Additives – 100ml Formula to Increase Power, Improve Efficiency, and Maintain Engine Cleanliness, Essential for Optimal Vehicle Performance.
Gecau High-efficiency Wear Inhibitor Engine Wear Protectant Noise Reduction And Shaking Strong Cure For Burning Oil Additives 100ml as show Art&Crafts 1.6x5.2 $3.99

$399
current price $3.99Gecau High-efficiency Wear Inhibitor Engine Wear Protectant Noise Reduction And Shaking Strong Cure For Burning Oil Additives 100ml as show Art&Crafts 1.6x5.2
Automotive Additives Increase Power Improve Efficiency and Maintain Cleanliness 100ml $10.37

$1037
current price $10.37Automotive Additives Increase Power Improve Efficiency and Maintain Cleanliness 100ml
Mduoduo Engine Oil Additive Designed to Protect Against Wear and Tear Effectively Car Accessories $11.26

$1126
current price $11.26Mduoduo Engine Oil Additive Designed to Protect Against Wear and Tear Effectively Car Accessories
STA-BIL Fast Fix 22304 Small Engine Treatment Automotive Additive, 8 oz

STA-BIL Fast Fix 22304 Small Engine Treatment Automotive Additive, 8 oz
Power Plus 19769-18 Fuel Additive Alcohol Top Lube Cherry Scented

Power Plus 19769-18 Fuel Additive Alcohol Top Lube Cherry Scented
23 out of 5 Stars. 2 reviews
Marvel Mystery Oil Automotive Additives for Fuel Treatment, 16 Oz, 2 Pack

Marvel Mystery Oil Automotive Additives for Fuel Treatment, 16 Oz, 2 Pack
25 out of 5 Stars. 2 reviews
Johnson/Evinrude/OMC OEM 2+4 Fuel Conditioner Treatment 16oz Pint 0766209 766209

Johnson/Evinrude/OMC OEM 2+4 Fuel Conditioner Treatment 16oz Pint 0766209 766209
35 out of 5 Stars. 3 reviews
Lucas Oil 10003 Fuel Injector Cleaner 32 oz. Automotive Additive From $9.89

4 options
Available in additional 4 optionsFrom$989
Lucas Oil 10003 Fuel Injector Cleaner 32 oz. Automotive Additive
11684.8 out of 5 Stars. 1168 reviews
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Star Tron Enzyme Fuel Treatment - Small Engine Formula – Gas Additive Rejuvenates & Stabilizes Old Gasoline - Cures & Prevents Ethanol Problems From $8.92

5 options
Available in additional 5 optionsFrom$892
Star Tron Enzyme Fuel Treatment - Small Engine Formula – Gas Additive Rejuvenates & Stabilizes Old Gasoline - Cures & Prevents Ethanol Problems
2464.8 out of 5 Stars. 246 reviews
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