Shop Best Auto Coolant Additives

Sponsored
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$11.89
OTR Light Duty Universal Antifreeze/Coolant 50/50 Premix 1-Gallon | Otr Conventional Green Antifrz 50/50 1G | PTAF-2101R
FleetPride
$11.89
OTR Light Duty Universal Antifreeze/Coolant 50/50 Premix 1-Gallon | Otr Conventional Green Antifrz 50/50 1G | PTAF-2101R
FleetPride
$55.88
Starfire Purecool 50/50 Antifreeze
Santie Wholesale Oil Company
$55.88
Starfire Purecool 50/50 Antifreeze
Santie Wholesale Oil Company
$54.41
Starfire P-Fleet Red Elc 50/50 Antifreeze
Santie Wholesale Oil Company
$54.41
Starfire P-Fleet Red Elc 50/50 Antifreeze
Santie Wholesale Oil Company
$752.30
Shell Rotella Elc Nf Concentrate
Santie Wholesale Oil Company
$752.30
Shell Rotella Elc Nf Concentrate
Santie Wholesale Oil Company
$14.79
OTR Heavy Duty Extended Life Antifreeze/Coolant 50/50 Pre-Mix 1-Gallon | Otr Ext Life Red Noat Antifrz 50/50 1G | PTAF-2301R
FleetPride
$14.79
OTR Heavy Duty Extended Life Antifreeze/Coolant 50/50 Pre-Mix 1-Gallon | Otr Ext Life Red Noat Antifrz 50/50 1G | PTAF-2301R
FleetPride
$51.99
$55.56
Red Line 80204 Waterwetter Super Coolant - 12 Ounce (4 Pack)
Amazon.com
73
Free shipping
$51.99
$55.56
Red Line 80204 Waterwetter Super Coolant - 12 Ounce (4 Pack)
Amazon.com
$144.66
Ingersoll-Rand 47703841001 OEM Ultra 4K Synthetic Rotary Coolant (5 Liters)
Amazon.com
Free shipping
$144.66
Ingersoll-Rand 47703841001 OEM Ultra 4K Synthetic Rotary Coolant (5 Liters)
Amazon.com
$208.60
Rislone® 4782 Diesel DEF Treatment Super Concentrate Anti-Crystallization Solution, 33 Oz (Pack Of 6)
Amazon.com
Free shipping
$208.60
Rislone® 4782 Diesel DEF Treatment Super Concentrate Anti-Crystallization Solution, 33 Oz (Pack Of 6)
Amazon.com
$67.38
Coolant Concentrate 1Gallon
Wood-Mizer (US)
$67.38
Coolant Concentrate 1Gallon
Wood-Mizer (US)
$54.84
Abanaki CSDT, Deodorizing Tablet Coolant Additive 16 Oz Tube
Selectum
$54.84
Abanaki CSDT, Deodorizing Tablet Coolant Additive 16 Oz Tube
Selectum
$29.95
Bronco Sport Mishimoto Liquid Chill OE Coolant Orange One Gallon MMRA-LC-EG-OR
Extreme Terrain
2
$29.95
Bronco Sport Mishimoto Liquid Chill OE Coolant Orange One Gallon MMRA-LC-EG-OR
Extreme Terrain
$9.99
Bar's Leaks Liquid Aluminum Radiator And Heater Core Cooling System Radiator Stop Leak 16.9 Oz
Ace Hardware
3K+
$9.99
Bar's Leaks Liquid Aluminum Radiator And Heater Core Cooling System Radiator Stop Leak 16.9 Oz
Ace Hardware
$9.99
$14.99
DEI Radiator Relief Cooling Additive 16-Oz 2005
CJ Pony Parts
33% off
$9.99
$14.99
DEI Radiator Relief Cooling Additive 16-Oz 2005
CJ Pony Parts
$34.55
Baldwin Filters Coolant Additive: Coolant Additive, Coolant, 0.5 Gal Container Size, Yellow, Jug Model: CS5058
Grainger
$34.55
Baldwin Filters Coolant Additive: Coolant Additive, Coolant, 0.5 Gal Container Size, Yellow, Jug Model: CS5058
Grainger
$13.99
Red Line Waterwetter: Antifreeze Additive, Reduces Coolant Temperatures By As Much As 30 Deg. F, 12 Oz., 80204
Advance Auto Parts
2K+
$13.99
Red Line Waterwetter: Antifreeze Additive, Reduces Coolant Temperatures By As Much As 30 Deg. F, 12 Oz., 80204
Advance Auto Parts
$8.99
$15.99
DEI Heater Hotter 16 Oz. Performance Coolant Additive
CJ Pony Parts
33
43% off
$8.99
$15.99
DEI Heater Hotter 16 Oz. Performance Coolant Additive
CJ Pony Parts
$17.99
VP Racing Fuels Cool Down Coolant Performance Improver, 16Oz., 2085
Advance Auto Parts
194
$17.99
VP Racing Fuels Cool Down Coolant Performance Improver, 16Oz., 2085
Advance Auto Parts
$18.69
RAM 1500 Royal Purple Ice Super Coolant 1600
AmericanTrucks.com
5
$18.69
RAM 1500 Royal Purple Ice Super Coolant 1600
AmericanTrucks.com
$15.99
$22.04
Red Line 80204 Mustang "Water Wetter" Coolant Additive 1968
CJ Pony Parts
27% off
$15.99
$22.04
Red Line 80204 Mustang "Water Wetter" Coolant Additive 1968
CJ Pony Parts
$6.99
Prestone Antifreeze And Coolant: Concentrate, Waterline/RV, Protects Against Corrosion And Rust, 1 Gallon, AF225
Advance Auto Parts
$6.99
Prestone Antifreeze And Coolant: Concentrate, Waterline/RV, Protects Against Corrosion And Rust, 1 Gallon, AF225
Advance Auto Parts
$236.79
Baldwin Filters Coolant Additive: Coolant Additive, Coolant, 5 Gal Container Size, Green, Jug Model: CSC5013
Grainger
$236.79
Baldwin Filters Coolant Additive: Coolant Additive, Coolant, 5 Gal Container Size, Green, Jug Model: CSC5013
Grainger
$17.99
Koolance 702 Liquid Coolant, High-Performance, Colorless, 700Ml (24 Fl Oz)
Koolance
$17.99
Koolance 702 Liquid Coolant, High-Performance, Colorless, 700Ml (24 Fl Oz)
Koolance
$20.95
$23.00
Mishimoto Liquid Chill® Radiator Coolant Additive MMRA-LC
Mishimoto Automotive
223
$20.95
$23.00
Mishimoto Liquid Chill® Radiator Coolant Additive MMRA-LC
Mishimoto Automotive
$20.95
Mustang Mishimoto Liquid Chill Radiator Coolant Additive
American Muscle
223
$20.95
Mustang Mishimoto Liquid Chill Radiator Coolant Additive
American Muscle
$288.54
Baldwin Filters Coolant Additive: Coolant Additive, Coolant, 5 Gal Container Size, Yellow, Jug Model: CS5057
Grainger
$288.54
Baldwin Filters Coolant Additive: Coolant Additive, Coolant, 5 Gal Container Size, Yellow, Jug Model: CS5057
Grainger
$297.73
Master Fluid Solutions | TRIM® Coolant Additives, Treatments & Test Strips: Product Type: Defoamer, Container Type: Jug, Container Size: 1 Gal
MSC Direct
$297.73
Master Fluid Solutions | TRIM® Coolant Additives, Treatments & Test Strips: Product Type: Defoamer, Container Type: Jug, Container Size: 1 Gal
MSC Direct
$52.00
8200-091 Synthetic Coolant For Metalworking 1 Gal
Magna-Matic Factory Direct Online Store
$52.00
8200-091 Synthetic Coolant For Metalworking 1 Gal
Magna-Matic Factory Direct Online Store
$108.99
Koolance 702 Liquid Coolant, High-Performance, Colorless, 5000Ml (169 Fl Oz)
Koolance
$108.99
Koolance 702 Liquid Coolant, High-Performance, Colorless, 5000Ml (169 Fl Oz)
Koolance
$13.89
Red Line Water Wetter Coolant Additive: Water Wetter Is A Unique Wetting Agent For Cooling Systems Which Reduces Coolant Temperatures By As Much As...
Turner Motorsport
$13.89
Red Line Water Wetter Coolant Additive: Water Wetter Is A Unique Wetting Agent For Cooling Systems Which Reduces Coolant Temperatures By As Much As...
Turner Motorsport
$52.95
$58.00
Mishimoto Liquid Chill® Synthetic Engine Coolant, Premixed 1 Gallon MMRA-LC-5050F
Mishimoto Automotive
185
$52.95
$58.00
Mishimoto Liquid Chill® Synthetic Engine Coolant, Premixed 1 Gallon MMRA-LC-5050F
Mishimoto Automotive
$13.75
$18.60
Eagle Brand COOLANT BLUE 1 GAL | 905-16-25501
Linde Gas & Equipment
26% off
$13.75
$18.60
Eagle Brand COOLANT BLUE 1 GAL | 905-16-25501
Linde Gas & Equipment
$20.95
Sierra 1500 Mishimoto Liquid Chill Radiator Coolant Additive MMRA-LC
AmericanTrucks.com
2
$20.95
Sierra 1500 Mishimoto Liquid Chill Radiator Coolant Additive MMRA-LC
AmericanTrucks.com
$52.95
Mustang Mishimoto Liquid Chill Synthetic Engine Coolant Premixed
American Muscle
185
$52.95
Mustang Mishimoto Liquid Chill Synthetic Engine Coolant Premixed
American Muscle
$5,944.27
Cimcool - Coolant Additives, Treatments & Test Strips Type: Anti-Foam/
Exact Tooling
$5,944.27
Cimcool - Coolant Additives, Treatments & Test Strips Type: Anti-Foam/
Exact Tooling
$17.99
Koolance 702 Liquid Coolant, High-Performance, UV Blue, 700Ml (24 Fl Oz)
Koolance
128
$17.99
Koolance 702 Liquid Coolant, High-Performance, UV Blue, 700Ml (24 Fl Oz)
Koolance
$8.97
Bar's Leaks High Mileage Cooling System Repair Antifreeze & Coolant 16.9 Oz
Walmart
19
$8.97
Bar's Leaks High Mileage Cooling System Repair Antifreeze & Coolant 16.9 Oz
Walmart
The 10 Best Coolants and Antifreezes
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mechanicbase.com
Know How - How To Choose the Right Coolant
Know How - How To Choose the Right Coolant
Mar 14, 2023
repco.com.au
The 2 Best Cooling System Additives! - AdditiveHelp.com
The 2 Best Cooling System Additives! - AdditiveHelp.com
Aug 11, 2021
additivehelp.com
Best Antifreeze and Coolants 2026: Cool Your Jets
Best Antifreeze and Coolants 2026: Cool Your Jets
Jun 3, 2018
autoquarterly.com
8 Best Oil Stop Leak Additives of 2025 - Mechanic Base
8 Best Oil Stop Leak Additives of 2025 - Mechanic Base
Jan 19, 2022
mechanicbase.com
How Oil Additives Work
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AutoZone How-To: Flushing and Filling Your Cooling System
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Shop Best Auto Coolant Additives

Sponsored
About our ads
$11.89
OTR Light Duty Universal Antifreeze/Coolant 50/50 Premix 1-Gallon | Otr Conventional Green Antifrz 50/50 1G | PTAF-2101R
FleetPride
$11.89
OTR Light Duty Universal Antifreeze/Coolant 50/50 Premix 1-Gallon | Otr Conventional Green Antifrz 50/50 1G | PTAF-2101R
FleetPride
$55.88
Starfire Purecool 50/50 Antifreeze
Santie Wholesale Oil Company
$55.88
Starfire Purecool 50/50 Antifreeze
Santie Wholesale Oil Company
$54.41
Starfire P-Fleet Red Elc 50/50 Antifreeze
Santie Wholesale Oil Company
$54.41
Starfire P-Fleet Red Elc 50/50 Antifreeze
Santie Wholesale Oil Company
$752.30
Shell Rotella Elc Nf Concentrate
Santie Wholesale Oil Company
$752.30
Shell Rotella Elc Nf Concentrate
Santie Wholesale Oil Company
$14.79
OTR Heavy Duty Extended Life Antifreeze/Coolant 50/50 Pre-Mix 1-Gallon | Otr Ext Life Red Noat Antifrz 50/50 1G | PTAF-2301R
FleetPride
$14.79
OTR Heavy Duty Extended Life Antifreeze/Coolant 50/50 Pre-Mix 1-Gallon | Otr Ext Life Red Noat Antifrz 50/50 1G | PTAF-2301R
FleetPride
$51.99
$55.56
Red Line 80204 Waterwetter Super Coolant - 12 Ounce (4 Pack)
Amazon.com
73
Free shipping
$51.99
$55.56
Red Line 80204 Waterwetter Super Coolant - 12 Ounce (4 Pack)
Amazon.com
$144.66
Ingersoll-Rand 47703841001 OEM Ultra 4K Synthetic Rotary Coolant (5 Liters)
Amazon.com
Free shipping
$144.66
Ingersoll-Rand 47703841001 OEM Ultra 4K Synthetic Rotary Coolant (5 Liters)
Amazon.com
$208.60
Rislone® 4782 Diesel DEF Treatment Super Concentrate Anti-Crystallization Solution, 33 Oz (Pack Of 6)
Amazon.com
Free shipping
$208.60
Rislone® 4782 Diesel DEF Treatment Super Concentrate Anti-Crystallization Solution, 33 Oz (Pack Of 6)
Amazon.com
$67.38
Coolant Concentrate 1Gallon
Wood-Mizer (US)
$67.38
Coolant Concentrate 1Gallon
Wood-Mizer (US)
$54.84
Abanaki CSDT, Deodorizing Tablet Coolant Additive 16 Oz Tube
Selectum
$54.84
Abanaki CSDT, Deodorizing Tablet Coolant Additive 16 Oz Tube
Selectum
$29.95
Bronco Sport Mishimoto Liquid Chill OE Coolant Orange One Gallon MMRA-LC-EG-OR
Extreme Terrain
2
$29.95
Bronco Sport Mishimoto Liquid Chill OE Coolant Orange One Gallon MMRA-LC-EG-OR
Extreme Terrain
$9.99
Bar's Leaks Liquid Aluminum Radiator And Heater Core Cooling System Radiator Stop Leak 16.9 Oz
Ace Hardware
3K+
$9.99
Bar's Leaks Liquid Aluminum Radiator And Heater Core Cooling System Radiator Stop Leak 16.9 Oz
Ace Hardware
$9.99
$14.99
DEI Radiator Relief Cooling Additive 16-Oz 2005
CJ Pony Parts
33% off
$9.99
$14.99
DEI Radiator Relief Cooling Additive 16-Oz 2005
CJ Pony Parts
$34.55
Baldwin Filters Coolant Additive: Coolant Additive, Coolant, 0.5 Gal Container Size, Yellow, Jug Model: CS5058
Grainger
$34.55
Baldwin Filters Coolant Additive: Coolant Additive, Coolant, 0.5 Gal Container Size, Yellow, Jug Model: CS5058
Grainger
$13.99
Red Line Waterwetter: Antifreeze Additive, Reduces Coolant Temperatures By As Much As 30 Deg. F, 12 Oz., 80204
Advance Auto Parts
2K+
$13.99
Red Line Waterwetter: Antifreeze Additive, Reduces Coolant Temperatures By As Much As 30 Deg. F, 12 Oz., 80204
Advance Auto Parts
$8.99
$15.99
DEI Heater Hotter 16 Oz. Performance Coolant Additive
CJ Pony Parts
33
43% off
$8.99
$15.99
DEI Heater Hotter 16 Oz. Performance Coolant Additive
CJ Pony Parts
$17.99
VP Racing Fuels Cool Down Coolant Performance Improver, 16Oz., 2085
Advance Auto Parts
194
$17.99
VP Racing Fuels Cool Down Coolant Performance Improver, 16Oz., 2085
Advance Auto Parts
$18.69
RAM 1500 Royal Purple Ice Super Coolant 1600
AmericanTrucks.com
5
$18.69
RAM 1500 Royal Purple Ice Super Coolant 1600
AmericanTrucks.com