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The 10 Best Coolant Additives

Sep 2024

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The Score indicates the overall value of the product.
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and other indicators such as: Relative Price, Brand,
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 Various Indicators

such as Brand reputation and relative price
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$18
$42+
Rank
Manufacturer
Product Name
Score
1
Best Coolant Additives - VP Racing Fuels Madditive Cool Down - Radiator Review VP Racing

VP Racing Fuels Madditive Cool Down - Radiator Systems Temperature Decrease 16 Ounces for All Radiators. Decreases Engine Temps up to 30 Degrees

9 . 7
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2
Best Coolant Additives - Design Engineering 040104 Radiator Relief Coolant Additive Review Design Engineering

Design Engineering 040104 Radiator Relief Coolant Additive for All Water Cooled Engines, 32 Ounce

9 . 5
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3
Best Coolant Additives - Mishimoto Liquid Chill Radiator Coolant Additive Review Mishimoto

Mishimoto Liquid Chill Radiator Coolant Additive

9 . 2
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4
Best Coolant Additives - Cummins Filtration Fleetguard DCA60L Coolant Additive 16oz. DCA4 Review Fleetguard

Cummins Filtration Fleetguard DCA60L Coolant Additive 16oz. DCA4

8 . 9
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5
Best Coolant Additives - K-SEAL Coolant Leak Repair, ST9501 472ml Multi-Purpose Formula Review K-Seal

K-SEAL Coolant Leak Repair, ST9501 472ml Multi-Purpose Formula Stops Leaks in the Radiator, Head Gasket, Block, Water Pump Casing, Heater Core, Freeze Plug - Pour and Go - Designed for Canadian Market

By K-Seal
8 . 5
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6
Best Coolant Additives - Liqui Moly Radiator Stop Leak | 250 ml Review Liqui Moly

Liqui Moly Radiator Stop Leak | 250 ml | Cooler additive | SKU: 20132

8 . 4
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7
Best Coolant Additives - Engine Ice TYDS008 High Performance Coolant - 0.5 Review Engine Ice

Engine Ice TYDS008 High Performance Coolant - 0.5 Gallon

8 . 0
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8
Best Coolant Additives - Royal Purple 01600 Purple Ice Super-Coolant Radiator Additive Review Royal Purple

Royal Purple 01600 Purple Ice Super-Coolant Radiator Additive, 12-Ounce

7 . 9
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9
Best Coolant Additives - Engine Ice Hi Performance SXS/ATV Anti-Freeze Coolant 1/2 Review Engine Ice

Engine Ice Hi Performance SXS/ATV Anti-Freeze Coolant 1/2 Gallon (12556)

7 . 4
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10
Best Coolant Additives - CORSAIR Hydro X Series, XL8, Performance Coolant, 1L Review Corsair

CORSAIR Hydro X Series, XL8, Performance Coolant, 1L, Translucent Red

By Corsair
7 . 3
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Gas Additives - Best Reviews Guide
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Fuel Additives - Best Reviews Guide
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Diesel Additives - Best Reviews Guide

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