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AdditivesAdvance Auto Parts ShopAll Auto PaintAntifreeze & Car CoolantsATV / UTV Oils & FluidsAuto Paint ChemicalsAutomotive Bulk BuysAutomotive FluidsAutomotive GreasesAutomotive Paints and CoatingsAutomotive Specialty PaintsBrakes & Brake PartsBulk Automotive FluidsCar BatteriesCar WashCar Wash SuppliesDirt Bike Parts & AccessoriesEngine & Powertrain Replacement PartsExhaust Parts & Emissions PartsExterior Car DetailingFarm and Agriculture Bulk BuysGaskets & Sealers on Advance Auto Parts ShopIgnition and Tune Up on Advance Auto Parts ShopInterior Car DetailingLIQUI MOLYMaintenance EquipmentMotor OilMotor Oil, Fluids & Additives on Advance Auto Parts ShopMotorcycle Oils & FluidsOil Change ToolsPaint and Decal RemoversPerformance Ignition and ElectricalPrestoneReplacement Auto PartsRoad Trip BatteriesRoad Trip Oil, Fluids & FiltersRV CleanersTractor FluidsTruck and Fleet Bulk BuysTruck Batteries
Additives For Plastics(260)
Uses item details. Price when purchased online
Rollback Dura Lube Catalytic & Exhaust System Treatment Emissions Additive Automotive Converter Cleaner 16 Fl oz From $19.54

Sponsored
From$1954
Dura Lube Catalytic & Exhaust System Treatment Emissions Additive Automotive Converter Cleaner 16 Fl oz
7984.2 out of 5 Stars. 798 reviews
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Dura Lube Engine Treatment, Automotive Oil Additive for Gas and Diesel Engines, 32 oz From $15.97

Sponsored
From$1597
Dura Lube Engine Treatment, Automotive Oil Additive for Gas and Diesel Engines, 32 oz
2454.8 out of 5 Stars. 245 reviews
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Magnetic Diesel Additive Container Plastic Storage Rack for Archoil 40.6 oz $28.00

Sponsored
$2800
current price $28.00Magnetic Diesel Additive Container Plastic Storage Rack for Archoil 40.6 oz
Archoil AR6300 Winter Diesel Treatment - Treats 550 Gallons - (Two Pack) - Additive for All Diesel Vehicles Includes Anti-Gel Protection $79.90

Sponsored
$7990
current price $79.90Archoil AR6300 Winter Diesel Treatment - Treats 550 Gallons - (Two Pack) - Additive for All Diesel Vehicles Includes Anti-Gel Protection
2144.9 out of 5 Stars. 214 reviews
904-001 Duratec Clear Hi-Gloss Additive for Gelcoat (Half Pint) $26.99

$2699
current price $26.99904-001 Duratec Clear Hi-Gloss Additive for Gelcoat (Half Pint)
904-001 Duratec Clear Hi-Gloss Additive for Gelcoat (Pint) $41.99

$4199
current price $41.99904-001 Duratec Clear Hi-Gloss Additive for Gelcoat (Pint)
Transtar Autobody Products 9194 - Universal Urethane Flex Additive - 1 qt Can - Clear - Liquid $69.46

$6946
current price $69.46Transtar Autobody Products 9194 - Universal Urethane Flex Additive - 1 qt Can - Clear - Liquid
25 out of 5 Stars. 2 reviews
US Chemical Super Charger 40154 Resin Additive, 16 oz, Liquid $29.97

$2997
current price $29.97US Chemical Super Charger 40154 Resin Additive, 16 oz, Liquid
US Chemical 58220 All Resin, 1 gal Can, Amber, Liquid $115.75

$11575
current price $115.75US Chemical 58220 All Resin, 1 gal Can, Amber, Liquid
Top rated for winter use Archoil AR6300 Winter Diesel Treatment - Treats 275 Gallons - Includes Anti-Gel Protection - Additive for All Diesel Vehicles $44.95

Sponsored
$4495
current price $44.95Archoil AR6300 Winter Diesel Treatment - Treats 275 Gallons - Includes Anti-Gel Protection - Additive for All Diesel Vehicles
2164.9 out of 5 Stars. 216 reviews
Star Tron Enzyme Fuel Treatment - Small Engine Formula – Gas Additive Rejuvenates & Stabilizes Old Gasoline - Cures & Prevents Ethanol Problems From $8.92

Sponsored
From$892
Star Tron Enzyme Fuel Treatment - Small Engine Formula – Gas Additive Rejuvenates & Stabilizes Old Gasoline - Cures & Prevents Ethanol Problems
2494.8 out of 5 Stars. 249 reviews
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FPPF FPPF TOTAL POWER 32 OZ 90343 $29.99

$2999
current price $29.99FPPF FPPF TOTAL POWER 32 OZ 90343
250 ml Hybrid Additive $28.92

$2892
current price $28.92250 ml Hybrid Additive
300Ml Automotive Cooling System Protectant Anti Corrosion Anti Fouling Sealant Additive Fluid $6.99

$699
current price $6.99300Ml Automotive Cooling System Protectant Anti Corrosion Anti Fouling Sealant Additive Fluid
U Pol Products SYSTEM 20 UP2001 Fisheye Eliminator Anti-Silicone Additive, 250 mL Bottle, Clear, Liquid $41.32

$4132
current price $41.32U Pol Products SYSTEM 20 UP2001 Fisheye Eliminator Anti-Silicone Additive, 250 mL Bottle, Clear, Liquid
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
61534.8 out of 5 Stars. 6153 reviews
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Best seller (2 pack) Rust-Oleum Automotive Acetone-248667, Quart From $11.97

3 options
Available in additional 3 optionsFrom$1197
(2 pack) Rust-Oleum Automotive Acetone-248667, Quart
3224.7 out of 5 Stars. 322 reviews
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Extreme Cold Additive 2 oz. $27.30 Was $38.65

Now$2730
current price Now $27.30, Was $38.65$38.65
Extreme Cold Additive 2 oz.
Toycle 120ml System Additive Car Injector Cleaner Carbon Deposit Remover Suitable For Gasoline Three-Way Maintenance(green,Plastic)

Toycle 120ml System Additive Car Injector Cleaner Carbon Deposit Remover Suitable For Gasoline Three-Way Maintenance(green,Plastic)
Doc's Diesel Workhorse Additive Kit $81.99

Sponsored
$8199
current price $81.99Doc's Diesel Workhorse Additive Kit
Valvoline Advanced Complete 12oz Fuel System Cleaner, Automotive Additive 601456 $7.97 66.4 ¢/oz

Sponsored
$797
current price $7.9766.4 ¢/oz
Valvoline Advanced Complete 12oz Fuel System Cleaner, Automotive Additive 601456
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5 Star Extreme 5ST-5458-4 2.1 Voc Maxx Fill Activator $40.99

$4099
current price $40.995 Star Extreme 5ST-5458-4 2.1 Voc Maxx Fill Activator
Car Tank Leak Repair Powder Stop Leak Powder Leak Filler Repair Tank Leak Stop Leak Leak Filler Powder Truck Leak Plugger Powerful Additive Powder Long Lasting, Usupdd 2025 Car Tank Leak $5.19

$519
current price $5.19Car Tank Leak Repair Powder Stop Leak Powder Leak Filler Repair Tank Leak Stop Leak Leak Filler Powder Truck Leak Plugger Powerful Additive Powder Long Lasting, Usupdd 2025 Car Tank Leak
Automotive Attachment Tape Adhesion Promoter $35.26

$3526
current price $35.26Automotive Attachment Tape Adhesion Promoter
BG Advanced Formula MOA EPR_115 Automotive Additive, 32 oz $36.58

$3658
current price $36.58BG Advanced Formula MOA EPR_115 Automotive Additive, 32 oz
194.3 out of 5 Stars. 19 reviews
Automotive Cooling System Protectant 300ml,Anti Rust Fouling Sealing Additive,Heat Dissipation Enhancement Fluid,Multi Vehicle Cooling System Care,Leak Repair Coolant Efficiency Booster Was $16.56

Automotive Cooling System Protectant 300ml,Anti Rust Fouling Sealing Additive,Heat Dissipation Enhancement Fluid,Multi Vehicle Cooling System Care,Leak Repair Coolant Efficiency Booster
Limited Slip Additive $18.99

$1899
current price $18.99Limited Slip Additive
15 out of 5 Stars. 1 reviews
Clearance Automotive Fuel System Cleaner for Cars, Gas Treatment Carbon Deposits Remover, Fuel Lines Carbon Removal Additive and Performance Booster, Plastic Bottle, 60ml (2.0 fl oz), Net Weight 70g $6.33 Was $7.11

Now$633
current price Now $6.33, Was $7.11$7.11
Automotive Fuel System Cleaner for Cars, Gas Treatment Carbon Deposits Remover, Fuel Lines Carbon Removal Additive and Performance Booster, Plastic Bottle, 60ml (2.0 fl oz), Net Weight 70g
Clearance TOUMENY Car Radiator Stop Leak Powder 15ml, Tank Leak Repair Additive for Cooling System, Leak Filler Powder for Trucks Cars with Long Lasting Protection $6.69 Was $7.49

Now$669
current price Now $6.69, Was $7.49$7.49
TOUMENY Car Radiator Stop Leak Powder 15ml, Tank Leak Repair Additive for Cooling System, Leak Filler Powder for Trucks Cars with Long Lasting Protection
Xado Atomic Metal Conditioner Maximum with 1 Stage Revitalizant Treatment and Additive for Gasoline LPG and Diesel Engines $49.49

Sponsored
$4949
current price $49.49Xado Atomic Metal Conditioner Maximum with 1 Stage Revitalizant Treatment and Additive for Gasoline LPG and Diesel Engines
74.3 out of 5 Stars. 7 reviews
AtomEx TotalFlush Universal oil system cleaner XA40613 Automotive Additive, 250 ml $19.99

Sponsored
$1999
current price $19.99AtomEx TotalFlush Universal oil system cleaner XA40613 Automotive Additive, 250 ml
64.5 out of 5 Stars. 6 reviews
Best seller Berryman Products 2211 Mass Air Flow Sensor Cleaner with Extension, 11 oz From $7.97

5 options
Available in additional 5 optionsFrom$797
Berryman Products 2211 Mass Air Flow Sensor Cleaner with Extension, 11 oz
2714.7 out of 5 Stars. 271 reviews
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Lead Substitute - 16 oz. $24.99

$2499
current price $24.99Lead Substitute - 16 oz.
15 out of 5 Stars. 1 reviews
Factory Motor Parts Multi System Automotive Additive, 16 oz $12.10

$1210
current price $12.10Factory Motor Parts Multi System Automotive Additive, 16 oz
BTE Liquid Coolant Additive (Half Gallon Plastic Jug) Baldwin CS5009 $37.00

$3700
current price $37.00BTE Liquid Coolant Additive (Half Gallon Plastic Jug) Baldwin CS5009
Grrvtrz 50ml Automotive Antifreeze Glass Oil Film Supplement Fluid,Cleaning Supplies,Home Cleaning Products $3.51

$351
current price $3.51Grrvtrz 50ml Automotive Antifreeze Glass Oil Film Supplement Fluid,Cleaning Supplies,Home Cleaning Products
Lead Substitute - 1 Gallon $89.99

$8999
current price $89.99Lead Substitute - 1 Gallon
64.3 out of 5 Stars. 6 reviews
LEAD SUBSTITUTE 12OZ $11.16 Was $13.30

Now$1116
current price Now $11.16, Was $13.30$13.30
LEAD SUBSTITUTE 12OZ
93.8 out of 5 Stars. 9 reviews
Momihoom Car Tank Leak Repair Powder Stop Leak Powder Leak Filler Repair Tank Leak Stop Leak Leak Filler Powder Truck Leak Plugger Powerful Additive Powder Long Lasting Was $4.61

Momihoom Car Tank Leak Repair Powder Stop Leak Powder Leak Filler Repair Tank Leak Stop Leak Leak Filler Powder Truck Leak Plugger Powerful Additive Powder Long Lasting
Techron Concentrate Plus 12oz $20.99

$2099
current price $20.99Techron Concentrate Plus 12oz
584.6 out of 5 Stars. 58 reviews
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Lead Substitute - 32 oz. $34.99

$3499
current price $34.99Lead Substitute - 32 oz.
25 out of 5 Stars. 2 reviews
Automotive Additives Increase Power Improve Efficiency and Maintain Cleanliness 100ml $5.54

$554
current price $5.54Automotive Additives Increase Power Improve Efficiency and Maintain Cleanliness 100ml
TACILIP Car Cleaning Supplies, Automotive Cleaning Agent Carburetor Throttle Engine Disassembly Cleaning Exhaust Gas Removal Carbon Deposition Automotive Gasoline Additive 120ml, Home Gifts, 2PC From $7.99
From$799
TACILIP Car Cleaning Supplies, Automotive Cleaning Agent Carburetor Throttle Engine Disassembly Cleaning Exhaust Gas Removal Carbon Deposition Automotive Gasoline Additive 120ml, Home Gifts, 2PC
Gumout Carb and Choke Cleaner 14 oz, 6 Pack - 800002231W From $21.19

2 options
Available in additional 2 optionsFrom$2119
Gumout Carb and Choke Cleaner 14 oz, 6 Pack - 800002231W
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
Automotive Cooling System Protectant Additive 300ml - Anti-Corrosion Anti-Scaling Sealant Fluid, Leak , Heat Dissipation Booster for Gasoline Diesel Engines Was $13.44

Automotive Cooling System Protectant Additive 300ml - Anti-Corrosion Anti-Scaling Sealant Fluid, Leak , Heat Dissipation Booster for Gasoline Diesel Engines
Car Tank Leak Repair Powder, Czzoypi Powerful Long Lasting Stop Leak Filler, 15ml Radiator Heater Core Plugger Additive Safe Quick Easy Application $7.49

$749
current price $7.49Car Tank Leak Repair Powder, Czzoypi Powerful Long Lasting Stop Leak Filler, 15ml Radiator Heater Core Plugger Additive Safe Quick Easy Application
Toycle Engine Decarbonizer High-efficiency Engine Wear Protection Agent Engine Decarbonizer Automobile And Motorcycle Engine Protection Oil Additive 200ml 2PC(color,Plastic)

Toycle Engine Decarbonizer High-efficiency Engine Wear Protection Agent Engine Decarbonizer Automobile And Motorcycle Engine Protection Oil Additive 200ml 2PC(color,Plastic)
16 oz Top Lube Additive Unscented Clear Bottle $47.10

$4710
current price $47.1016 oz Top Lube Additive Unscented Clear Bottle
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303 PRODUCTS 22205 Fuel Stabilizer- 4 Oz.$15.43current price $15.43Red Line RL-2 Diesel Additive - 15oz. - 70303
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Leak Saver Direct Inject Acid Scavenger - Converts Acid to Synthetic Oil, for A/C Systems Up to 5 Tons - Made in The USA$36.95current price $36.95Liqui Moly2007 300 ml Jectron Fuel Injection Cleaner
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