Shop radiator additives

Sponsored
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$6.99
Freezetone Radiator Additive / Organic Formula Green, 900-01
Advance Auto Parts
$6.99
Freezetone Radiator Additive / Organic Formula Green, 900-01
Advance Auto Parts
$36.42
WIX 24058 Radiator Liquid Cooling Treatment
Amazon.com
5
Free shipping
$36.42
WIX 24058 Radiator Liquid Cooling Treatment
Amazon.com
5
$11.99
Bluedevil Radiator Flush With A Concentrated Formula, 32 Ounces, 00204
Advance Auto Parts
451
$11.99
Bluedevil Radiator Flush With A Concentrated Formula, 32 Ounces, 00204
Advance Auto Parts
451
$5.99
Bar's Leaks Cooling System Radiator Stop Leak: With Water Pump Lube 11 Oz., 1199
Advance Auto Parts
105
$5.99
Bar's Leaks Cooling System Radiator Stop Leak: With Water Pump Lube 11 Oz., 1199
Advance Auto Parts
105
$3.99
Bar's Leaks Radiator Stop Leak Cooling System Supplement Tablets, 1.76 Oz., 1177
Advance Auto Parts
6
$3.99
Bar's Leaks Radiator Stop Leak Cooling System Supplement Tablets, 1.76 Oz., 1177
Advance Auto Parts
6
$9.99
Bars Leaks Liquid Aluminum Radiator & Heater Core Stop Leak, 16.9 Oz, 1186
Advance Auto Parts
3K+
$9.99
Bars Leaks Liquid Aluminum Radiator & Heater Core Stop Leak, 16.9 Oz, 1186
Advance Auto Parts
3K+
$7.98
Liqui Moly Radiator Cleaner (300Ml Can) - Lm2051
GenRacer
$7.98
Liqui Moly Radiator Cleaner (300Ml Can) - Lm2051
GenRacer
$9.99
$14.99
DEI Radiator Relief Cooling Additive 16-Oz 1972
CJ Pony Parts
33% off
$9.99
$14.99
DEI Radiator Relief Cooling Additive 16-Oz 1972
CJ Pony Parts
$9.99
$15.99
DEI Radiator Relief 16 Oz. Performance Additive 2024
CJ Pony Parts
37% off
$9.99
$15.99
DEI Radiator Relief 16 Oz. Performance Additive 2024
CJ Pony Parts
$13.99
Red Line Waterwetter: Antifreeze Additive, Reduces Coolant Temperatures By As Much As 30 Deg. F, 12 Oz, 80204
Advance Auto Parts
3K+
$13.99
Red Line Waterwetter: Antifreeze Additive, Reduces Coolant Temperatures By As Much As 30 Deg. F, 12 Oz, 80204
Advance Auto Parts
3K+
$27.99
Bluedevil Radiator & Block Seal - Permanent Repair, 16 Ounces, 00205
Advance Auto Parts
140
$27.99
Bluedevil Radiator & Block Seal - Permanent Repair, 16 Ounces, 00205
Advance Auto Parts
140
$11.99
Hyperlube Cool Super Coolant, 16 Oz, HPC100
Advance Auto Parts
688
$11.99
Hyperlube Cool Super Coolant, 16 Oz, HPC100
Advance Auto Parts
688
$8.99
$15.99
DEI Heater Hotter 16 Oz. Performance Coolant Additive 1960
CJ Pony Parts
43% off
$8.99
$15.99
DEI Heater Hotter 16 Oz. Performance Coolant Additive 1960
CJ Pony Parts
$9.99
$15.99
DEI Radiator Relief Additive 16Oz
Classic Muscle Parts
134
37% off
$9.99
$15.99
DEI Radiator Relief Additive 16Oz
Classic Muscle Parts
134
$44.25
Rust911 Performance Radiator & Block Cleaner- 32 Oz Concentrate
Amazon.com
1
Free shipping
$44.25
Rust911 Performance Radiator & Block Cleaner- 32 Oz Concentrate
Amazon.com
1
$12.99
Bluedevil 3-In-1 Radiator Flush With Oil Degreaser, Removes Buildup, Rust And Grease, 32 Ounces, 00203
Advance Auto Parts
385
$12.99
Bluedevil 3-In-1 Radiator Flush With Oil Degreaser, Removes Buildup, Rust And Grease, 32 Ounces, 00203
Advance Auto Parts
385
$12.79
$14.99
JEGS Racing Super Coolant Additive [16 Oz.]
JEGS High Performance
14% off
$12.79
$14.99
JEGS Racing Super Coolant Additive [16 Oz.]
JEGS High Performance
$9.99
$14.99
DEI Radiator Relief Cooling Additive
Classic Muscle Parts
134
33% off
$9.99
$14.99
DEI Radiator Relief Cooling Additive
Classic Muscle Parts
134
$32.99
Keyser Manufacturing 530 4032: Keyser Manufacturing 40 Below Coolant Additive
Summit Racing
13
$32.99
Keyser Manufacturing 530 4032: Keyser Manufacturing 40 Below Coolant Additive
Summit Racing
13
$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
223
$20.95
Jeep Gladiator Mishimoto Liquid Chill Radiator Coolant Additive MMRA-LC
Extreme Terrain
223
$20.95
Jeep Gladiator Mishimoto Liquid Chill Radiator Coolant Additive MMRA-LC
Extreme Terrain
223
$18.86
Ford Genuine Ford Fluid VC-8 Diesel Cooling System Additive - 16 Oz. , RED
Amazon.com
447
$18.86
Ford Genuine Ford Fluid VC-8 Diesel Cooling System Additive - 16 Oz. , RED
Amazon.com
447
$17.99
Prestone Antifreeze & Coolant: Concentrate, Universal, Protects Against Buildup & Rust, 1 Gallon, AF2000
Advance Auto Parts
1K+
$17.99
Prestone Antifreeze & Coolant: Concentrate, Universal, Protects Against Buildup & Rust, 1 Gallon, AF2000
Advance Auto Parts
1K+
$12.47
K-Seal Multi Purpose One Step Pour And Go Permanent Coolant Leak Repair St5501 Automotive Additive 8Oz Bottle
Walmart
156
$12.47
K-Seal Multi Purpose One Step Pour And Go Permanent Coolant Leak Repair St5501 Automotive Additive 8Oz Bottle
Walmart
156
$9.99
Design Engineering Radiator Relief Temp Reducer, Corrosion Inhibitor Compatible With All Radiators, 040200
Advance Auto Parts
134
$9.99
Design Engineering Radiator Relief Temp Reducer, Corrosion Inhibitor Compatible With All Radiators, 040200
Advance Auto Parts
134
$4.21
FJC Universal Radiator And Coolant Dye For Leak Detection - 1 Oz (4926)
JBTools
258
$4.21
FJC Universal Radiator And Coolant Dye For Leak Detection - 1 Oz (4926)
JBTools
258
$20.95
Mishimoto MMRA-LC: Mishimoto Liquid Chill Coolant Additive
Summit Racing
2
$20.95
Mishimoto MMRA-LC: Mishimoto Liquid Chill Coolant Additive
Summit Racing
2
$18.99
$19.99
Prestone Total Cooling System Cleaner 32 Fl Oz Heavy Duty Radiator
eBay
1
Free shipping
$18.99
$19.99
Prestone Total Cooling System Cleaner 32 Fl Oz Heavy Duty Radiator
eBay
1
$11.99
Rislone Hy-Per Cool Radiator Cleaner And Super Flush, 16 Oz
eBay
Free shipping
$11.99
Rislone Hy-Per Cool Radiator Cleaner And Super Flush, 16 Oz
eBay
Free shipping
$20.95
$25.00
Mishimoto MMRA-LC Mustang Coolant Additive Liquid Chill 4 Oz 2002
CJ Pony Parts
16% off
$20.95
$25.00
Mishimoto MMRA-LC Mustang Coolant Additive Liquid Chill 4 Oz 2002
CJ Pony Parts
$22.95
Mishimoto Liquid Chill Radiator Coolant Additive (Universal 4 Oz. Bottle)
Blessed Performance
$22.95
Mishimoto Liquid Chill Radiator Coolant Additive (Universal 4 Oz. Bottle)
Blessed Performance
$9.99
$15.99
DEI Radiator Relief 16 Oz. Cooling System Flush 1970
CJ Pony Parts
37% off
$9.99
$15.99
DEI Radiator Relief 16 Oz. Cooling System Flush 1970
CJ Pony Parts
$5.14
Rislone HPC100 Hy-Per Cool Super Coolant - 16 Oz.
JBTools
$5.14
Rislone HPC100 Hy-Per Cool Super Coolant - 16 Oz.
JBTools
$20.95
Charger Liquid Chill Radiator Coolant Additive MMRA-LC
American Muscle
223
$20.95
Charger Liquid Chill Radiator Coolant Additive MMRA-LC
American Muscle
223
$19.99
IRONTITE Thoro-Flush Coolant System Flush: Cleans All Cooling Systems, 16 Oz, 911016
Advance Auto Parts
$19.99
IRONTITE Thoro-Flush Coolant System Flush: Cleans All Cooling Systems, 16 Oz, 911016
Advance Auto Parts
$12.50
Permatex Radiator Repair Stop Leak Formula 12 Oz Bottle (30301)
JBTools
71
$12.50
Permatex Radiator Repair Stop Leak Formula 12 Oz Bottle (30301)
JBTools
71
The 2 Best Cooling System Additives! - AdditiveHelp.com
The 2 Best Cooling System Additives! - AdditiveHelp.com
Aug 11, 2021
additivehelp.com
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Shop radiator additives

Sponsored
About our ads
$11.99
Hyperlube Cool Super Coolant, 16 Oz, HPC100
Advance Auto Parts
688
$11.99
Hyperlube Cool Super Coolant, 16 Oz, HPC100
Advance Auto Parts
$12.99
Bluedevil 3-In-1 Radiator Flush With Oil Degreaser, Removes Buildup, Rust And Grease, 32 Ounces, 00203
Advance Auto Parts
385
$12.99
Bluedevil 3-In-1 Radiator Flush With Oil Degreaser, Removes Buildup, Rust And Grease, 32 Ounces, 00203
Advance Auto Parts
$8.99
$15.99
DEI Heater Hotter 16 Oz. Performance Coolant Additive 1960
CJ Pony Parts
43% off
$8.99
$15.99
DEI Heater Hotter 16 Oz. Performance Coolant Additive 1960
CJ Pony Parts
$9.99
$15.99
DEI Radiator Relief Additive 16Oz
Classic Muscle Parts
134
37% off
$9.99
$15.99
DEI Radiator Relief Additive 16Oz
Classic Muscle Parts
$44.25
Rust911 Performance Radiator & Block Cleaner- 32 Oz Concentrate
Amazon.com
1
Free shipping
$44.25
Rust911 Performance Radiator & Block Cleaner- 32 Oz Concentrate
Amazon.com
$12.79
$14.99
JEGS Racing Super Coolant Additive [16 Oz.]
JEGS High Performance
14% off
$12.79
$14.99
JEGS Racing Super Coolant Additive [16 Oz.]
JEGS High Performance
$9.99
$14.99
DEI Radiator Relief Cooling Additive
Classic Muscle Parts
134
33% off
$9.99
$14.99
DEI Radiator Relief Cooling Additive
Classic Muscle Parts
$32.99
Keyser Manufacturing 530 4032: Keyser Manufacturing 40 Below Coolant Additive
Summit Racing
13
$32.99
Keyser Manufacturing 530 4032: Keyser Manufacturing 40 Below Coolant Additive
Summit Racing
$17.99
Prestone Antifreeze & Coolant: Concentrate, Universal, Protects Against Buildup & Rust, 1 Gallon, AF2000
Advance Auto Parts
1K+
$17.99
Prestone Antifreeze & Coolant: Concentrate, Universal, Protects Against Buildup & Rust, 1 Gallon, AF2000
Advance Auto Parts
$9.99
Design Engineering Radiator Relief Temp Reducer, Corrosion Inhibitor Compatible With All Radiators, 040200
Advance Auto Parts
134
$9.99
Design Engineering Radiator Relief Temp Reducer, Corrosion Inhibitor Compatible With All Radiators, 040200
Advance Auto Parts
$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
Jeep Gladiator Mishimoto Liquid Chill Radiator Coolant Additive MMRA-LC
Extreme Terrain
223
$20.95
Jeep Gladiator Mishimoto Liquid Chill Radiator Coolant Additive MMRA-LC
Extreme Terrain
$18.86
Ford Genuine Ford Fluid VC-8 Diesel Cooling System Additive - 16 Oz. , RED
Amazon.com
447
$18.86
Ford Genuine Ford Fluid VC-8 Diesel Cooling System Additive - 16 Oz. , RED
Amazon.com
$12.47
K-Seal Multi Purpose One Step Pour And Go Permanent Coolant Leak Repair St5501 Automotive Additive 8Oz Bottle
Walmart
156
$12.47
K-Seal Multi Purpose One Step Pour And Go Permanent Coolant Leak Repair St5501 Automotive Additive 8Oz Bottle
Walmart
$4.21
FJC Universal Radiator And Coolant Dye For Leak Detection - 1 Oz (4926)
JBTools
258
$4.21
FJC Universal Radiator And Coolant Dye For Leak Detection - 1 Oz (4926)
JBTools
$20.95
Mishimoto MMRA-LC: Mishimoto Liquid Chill Coolant Additive
Summit Racing
2
$20.95
Mishimoto MMRA-LC: Mishimoto Liquid Chill Coolant Additive
Summit Racing
$18.99
$19.99
Prestone Total Cooling System Cleaner 32 Fl Oz Heavy Duty Radiator
eBay
1
Free shipping
$18.99
$19.99
Prestone Total Cooling System Cleaner 32 Fl Oz Heavy Duty Radiator
eBay
$11.99
Rislone Hy-Per Cool Radiator Cleaner And Super Flush, 16 Oz
eBay
Free shipping
$11.99
Rislone Hy-Per Cool Radiator Cleaner And Super Flush, 16 Oz
eBay

Shop radiator additives

Sponsored
About our ads
$6.99
Freezetone Radiator Additive / Organic Formula Green, 900-01
Advance Auto Parts
$6.99
Freezetone Radiator Additive / Organic Formula Green, 900-01
Advance Auto Parts
$36.42
WIX 24058 Radiator Liquid Cooling Treatment
Amazon.com
5
Free shipping
$36.42
WIX 24058 Radiator Liquid Cooling Treatment
Amazon.com
5
$11.99
Bluedevil Radiator Flush With A Concentrated Formula, 32 Ounces, 00204
Advance Auto Parts
451
$11.99
Bluedevil Radiator Flush With A Concentrated Formula, 32 Ounces, 00204
Advance Auto Parts
451
$5.99
Bar's Leaks Cooling System Radiator Stop Leak: With Water Pump Lube 11 Oz., 1199
Advance Auto Parts
105
$5.99
Bar's Leaks Cooling System Radiator Stop Leak: With Water Pump Lube 11 Oz., 1199
Advance Auto Parts
105
$3.99
Bar's Leaks Radiator Stop Leak Cooling System Supplement Tablets, 1.76 Oz., 1177
Advance Auto Parts
6
$3.99
Bar's Leaks Radiator Stop Leak Cooling System Supplement Tablets, 1.76 Oz., 1177
Advance Auto Parts
6
$9.99
Bars Leaks Liquid Aluminum Radiator & Heater Core Stop Leak, 16.9 Oz, 1186
Advance Auto Parts
3K+
$9.99
Bars Leaks Liquid Aluminum Radiator & Heater Core Stop Leak, 16.9 Oz, 1186
Advance Auto Parts
3K+
$7.98
Liqui Moly Radiator Cleaner (300Ml Can) - Lm2051
GenRacer
$7.98
Liqui Moly Radiator Cleaner (300Ml Can) - Lm2051
GenRacer
$9.99
$14.99
DEI Radiator Relief Cooling Additive 16-Oz 1972
CJ Pony Parts
33% off
$9.99
$14.99
DEI Radiator Relief Cooling Additive 16-Oz 1972
CJ Pony Parts
$9.99
$15.99
DEI Radiator Relief 16 Oz. Performance Additive 2024
CJ Pony Parts
37% off
$9.99
$15.99
DEI Radiator Relief 16 Oz. Performance Additive 2024
CJ Pony Parts
$13.99
Red Line Waterwetter: Antifreeze Additive, Reduces Coolant Temperatures By As Much As 30 Deg. F, 12 Oz, 80204
Advance Auto Parts
3K+
$13.99
Red Line Waterwetter: Antifreeze Additive, Reduces Coolant Temperatures By As Much As 30 Deg. F, 12 Oz, 80204
Advance Auto Parts
3K+
$27.99
Bluedevil Radiator & Block Seal - Permanent Repair, 16 Ounces, 00205
Advance Auto Parts
140
$27.99
Bluedevil Radiator & Block Seal - Permanent Repair, 16 Ounces, 00205
Advance Auto Parts
140
$11.99
Hyperlube Cool Super Coolant, 16 Oz, HPC100
Advance Auto Parts
688
$11.99
Hyperlube Cool Super Coolant, 16 Oz, HPC100
Advance Auto Parts
688
$8.99
$15.99
DEI Heater Hotter 16 Oz. Performance Coolant Additive 1960
CJ Pony Parts
43% off
$8.99
$15.99
DEI Heater Hotter 16 Oz. Performance Coolant Additive 1960
CJ Pony Parts
$9.99
$15.99
DEI Radiator Relief Additive 16Oz
Classic Muscle Parts
134
37% off
$9.99
$15.99
DEI Radiator Relief Additive 16Oz
Classic Muscle Parts
134
$44.25
Rust911 Performance Radiator & Block Cleaner- 32 Oz Concentrate
Amazon.com
1
Free shipping
$44.25
Rust911 Performance Radiator & Block Cleaner- 32 Oz Concentrate
Amazon.com
1
$12.99
Bluedevil 3-In-1 Radiator Flush With Oil Degreaser, Removes Buildup, Rust And Grease, 32 Ounces, 00203
Advance Auto Parts
385
$12.99
Bluedevil 3-In-1 Radiator Flush With Oil Degreaser, Removes Buildup, Rust And Grease, 32 Ounces, 00203
Advance Auto Parts
385
$12.79
$14.99
JEGS Racing Super Coolant Additive [16 Oz.]
JEGS High Performance
14% off
$12.79
$14.99
JEGS Racing Super Coolant Additive [16 Oz.]
JEGS High Performance
$9.99
$14.99
DEI Radiator Relief Cooling Additive
Classic Muscle Parts
134
33% off
$9.99
$14.99
DEI Radiator Relief Cooling Additive
Classic Muscle Parts
134