Coolant is a mixture of water and antifreeze. Antifreeze lowers the freezing point of the mixture and raises the boiling point, and it contains additives that prevent corrosion, and lubricate pump seals. Ethylene glycol is the main ingredient of antifreeze, with the additives making up 10% or less of the total. A 50/50 mixture is generally recommended, and this provides freezing protection down to -34°F (-36.7°C) and boiling protection up to 265°F (129°C).

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    • (0 reviews)
      # sp94168
      Super Duty Antifreeze by Be Cool®. Volume: 1 Gal Quantity: 2 Great time-saving components to simplify your radiator installation. These accessories can help you achieve a clean, professional look.
      High quality at an affordable priceBuilt to match your exact requirements
      $29.99 - $56.63
    • (1 review)
      # sp6401
      Premium Antifreeze/Coolant by Beck Arnley®. For one hundred years, Beck/Arnley has been providing premium OE quality parts for vehicles. Beginning with motorcycle parts in 1914 and transitioning to import vehicles in the 1950’s, brand...
      OE quality products from top original equipmentTop quality materials
      $11.22 - $28.84
    • (0 reviews)
      # sp137166
      Radiator Coolant/Antifreeze by Febi®. Volume: 1.5L. Blue. Concentrate. For distilled water, see part # 55 7864 010. This top-grade product is expertly made in compliance with stringent industry standards to offer a fusion of a...
      24 Months/24,000 MilesThe finest quality at a great price
      $9.60 - $10.15
    • (1 review)
      # sp24358
      Engine Coolant and Antifreeze by AISIN®.When you’re low on oil, coolant or some other fluid, you may be tempted to just run down to the local auto parts chain store. But before you waste your time and gas only to find high prices and...
      Convenient ready to use formula. No need to add water.Specialized inhibitors maximize temperature protection in today's high output engines.
      $15.39 - $15.41
    • (0 reviews)
      # mpn4509129328
      Maintain Fricofin DP™ 1 L G40 Pink Concentrate Coolant/Antifreeze by Fuchs®. Concentrate. For distilled water, see part # 55 7864 010. Ultra High Performance Coolant Additive based on monoethylene glycol. Free from nitrite, amine and...
      Made to provide the perfect lubricant solution for your needsDesigned with innovative manufacturing techniques
      $17.17
    • (0 reviews)
      # sp132290
      Maintain Fricofin LL™ "Long Life" Concentrate Coolant/Antifreeze by Fuchs®. For distilled water. Premium Performance Coolant Additive based on monoethylene glycol. Free from nitrite, amine, phosphate and silicates. This top-grade...
      Made to provide the perfect lubricant solution for your needsDesigned with innovative manufacturing techniques
      $6.04
    • (0 reviews)
      # sp132291
      Maintain Fricofin LL™ Concentrate Coolant/Antifreeze by Fuchs®. Concentrate. For distilled water, see part # 55 7864 010. Premium Performance Coolant Additive based on monoethylene glycol. Free from nitrite, amine, phosphate and...
      Made to provide the perfect lubricant solution for your needsDesigned with innovative manufacturing techniques
      $6.04 - $25.73
    • (0 reviews)
      # sp132292
      Maintain Fricofin™ Concentrate Coolant/Antifreeze by Fuchs®. Super High Performance Coolant Additive based on monoethylene glycol. Free from nitrite, amine and phosphate. Maintain Fricofin is an antifreeze coolant concentrate based...
      Made to provide the perfect lubricant solution for your needsDesigned with innovative manufacturing techniques
      $6.27 - $46.88
    • (0 reviews)
      # sp132293
      Maintain Fricofin™ G48 Concentrate Coolant/Antifreeze by Fuchs®. Concentrate. For distilled water, see part # 55 7864 010. Super High Performance Coolant Additive based on monoethylene glycol. Free from nitrite, amine and phosphate....
      Made to provide the perfect lubricant solution for your needsDesigned with innovative manufacturing techniques
      $19.29 - $22.33
    • (0 reviews)
      # sp129400
      Meeting or exceeding these particular vehicle specifications, OEM Extended Life Antifreeze/Coolant provides excellent high temperature aluminum protection and extended protection against rust, corrosion and pitting caused by cavitation...
      50/50 DilutedGuaranteed for 150,000 miles or 5 years service protection
      $11.55
    • (0 reviews)
      # sp126256
      Antifreeze by Vaico®. Original equipment manufacturer quality. Quality results from the consistent pursuit of an customer-focused strategy. Clients wishes are in the center of business. Vaico aim: the best quality for your...
      Targeted additives guarantee optimum lubricationApproved by OE manufacturer standards
      $8.22 - $30.73
    • (0 reviews)
      # sp127063
      Dex-Cool™ Long Life Coolant Antifreeze by Zerex®. 1 Gallon. Concentrate. Orange. ZEREX™ Dex-Cool® Antifreeze/Coolant is automaker approved for use in GM vehicles which require OAT DEX-COOL®. Meets or exceeds the following...
      OAT DEX-COOL® AUTOMAKER APPROVED for use in GM and SAAB vehiclesMeets or exceeds the following industry specifications: ASTM D3306, SAE J1034, J814, J1941, TMC of ATA RP-302B, AND Federal Specification A-A-870A
      $14.17 - $14.62
    • (0 reviews)
      # mpn4494964647
      G-05™ Antifreeze Coolant by Zerex®. 1 Gallon. Concentrate. Yellow. ZEREX™ G-05™ is the automaker approved original chemistry used in newer Ford & Daimler Chrysler automotive and diesel engines. Its Hybrid Organic Acid Technology...
      Automaker approved technologyProtection for up to 5 years/150,000 miles in light duty applications or 3 years/300,000 in heavy duty applications
      $15.01
    • (0 reviews)
      # sp127064
      G-40™ Antifreeze Coolant by Zerex®. 1 Gallon. Concentrate. Pink. Antifreeze products are scientifically formulated to keep your vehicle running in extreme temperatures. Find the right Valvoline antifreeze products for your vehicle....
      Coolant starts with the basic function of heat transfer and adds antifreeze protectionCoolant transfers heat and keeps the engine operating
      $23.11 - $43.56
    • (0 reviews)
      # sp127065
      G-48™ Antifreeze Coolant by Zerex®. 1 Gallon. Concentrate. Blue. Antifreeze products are scientifically formulated to keep your vehicle running in extreme temperatures. Find the right Valvoline antifreeze products for your vehicle....
      Unbeatable protection for vehicles requiring genuine G48 fluidProvides unparalleled protection of metals and elastomers
      $19.29 - $46.88
    • (1 review)
      # 681879367
      Universal Purple Ice™ High Performance Radiator Coolant Additive by Royal Purple®. 12 oz. Purple Ice® is a high performance coolant additive and radiator fluid conditioner. Its advanced 2-in-1 corrosion inhibitor and wetting agent...
      Reduces surface tension of a coolant allowing more heat to transfer outside the radiator resulting in more horsepowerReduces hot spots in the engine and cylinder heads, reducing the possibility of engine failure
      $9.71 - $134.24
    • (0 reviews)
      # 81781219
      Universal Coolant Inugel Ultra by Motul USA®. 1.05 Quart. Concentrated formula (down to -54°C / -65°F) Concentrated anti-freeze to dilute with water.
      Protects the cooling system from freezing and metallic parts from corrosionProvides an excellent thermal exchange and therefore improves engine cooling efficiency
      $10.89
    • (0 reviews)
      # 197282578
      Universal Flex-a-Chill™ Radiator Coolant Additive by Flex-a-Lite®. Flex-a-Chill™ coolant additive is compatible with all types of antifreeze, and it provides 100-percent corrosion protection with straight water. It utilizes...
      Provides corrosion protection for aluminumPrevent scale and blockage
      $13.45 - $160.68
    • (0 reviews)
      # mpn358594818
      Universal Radiator Relief™ Additive by Design Engineering®. 16 oz. 1 Piece. Includes Rust and Corrosion Inhibitors. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art...
      High quality at an affordable priceExpertly made from premium materials
      $9.06
    • (0 reviews)
      # 97614914
      Universal CSP Coolant System Protector by Driven Racing Oil®. Includes Rust and Corrosion Inhibitors. 12 Oz, 12 x 12 oz. Bottle. Joe Gibbs Driven CSP Coolant System Protector offers cast iron and aluminum insurance. Your radiator, water...
      Boiling Point / Boiling Range: > 104 °C / 219 °FColor: Brown
      $8.99 - $107.89
    • (0 reviews)
      # mpn2807450211
      Universal Racecool High Performance Coolant Additive 1 Quart by Heatshield®. RACECOOL performance coolant is specifically formulated for today's high performance applications, including aluminum components. The best answer is that...
      Capable of reducing running temperatures by as much as 15°FWill not leave residue like antifreeze, completely dries
      $27.30
    • (0 reviews)
      # mpn154347100
      11 fl. oz. 10 Minute Radiator Flush by Motor Medic®. Dual action formula especially designed to remove grease and scum plus loose rust and scale. Especially useful when changing anti-freeze or engine coolant.
      Quickly removes grease, scum, rust and scaleƒƒA fast, one step product that requires no neutralizer
      $1.88
    • (0 reviews)
      # mpn157725236
      11 fl. oz. Radiator Anti-Rust and Water Pump Lube by Motor Medic®. Stops cooling system rust, scale, and corrosion in all types of water-cooled engines. Protective fi lm prevents new rust forming. Neutralizes acids and protects against...
      Compatible with all conventional and extended life coolants/anti-freezesƒƒPrevents evaporation, formation of rust and corrosion
      $1.93
    • (0 reviews)
      # mpn4482724119
      2 oz. Radiator Repair Powder by Motor Medic®. A non-metallic solder. Use super heavy duty radiator Cleaner to clean your cooling system thoroughly. Use water Pump lubricant and rust inhibitor to keep it clean.
      The original heavy-duty powder radiator repairƒƒQuickly seals leak with a durable bond
      $1.96
    • (0 reviews)
      # mpn4482724122
      5.5 oz. Multi-Purpose Radiator Sealant and Conditioner by Motor Medic®. M-P (Multi-Purpose) Radiator Sealant and Conditioner treats the entire cooling system.
      Circulates through the cooling systemƒƒSeals leaks, stops head gasket and combustion chamber seepage
      $2.67
    • (0 reviews)
      # mpn4482724115
      Liquid Kool™ 32 oz. Cooling System Protector by Motor Medic®. Starts working immediately! Easy to use! Keeps cooling system cleaner! Prevents acid and corrosion build-up! Great for air conditioned cars!
      Recommended for all air conditioned vehiclesƒƒPrevents engine overheating, vapor lock, acid formation, corrosion and rust
      $4.48
    • (0 reviews)
      # mpn4498464558
      Transmedic™ 10 oz. Synthetic Automatic Transmission Flush by Motor Medic®. Solder Seal/Gunk Synthetic Transmission Flush is a unique blend of synthetic oil base stock formulated for cleaning automatic transmissions. Designed to remove...
      Use with or without flush equipmentƒƒCleans internal components and valves
      $5.34
    • (0 reviews)
      # mpn126712077
      Universal Dex-Cool™ Extended Life Antifreeze by Prestone®. Prestone® Antifreeze is compatible with any antifreeze/coolant that is used in vehicles with aluminum and other engine metals. Meets or exceeds ASTM D3306 and D4985 for...
      Compatible with antifreeze/coolant that is used in vehicles with aluminum and other engine metalsProvides freeze-up and boil-over protection
      $70.47
    • (0 reviews)
      # mpn126712072
      Universal Prime™ All Vehicle 50/50 Antifreeze by Prestone®. 1 gal. Prestone® Antifreeze is compatible with any antifreeze/coolant that is used in vehicles with aluminum and other engine metals. Meets or exceeds ASTM D3306 and D4985...
      Compatible with antifreeze/coolant that is used in vehicles with aluminum and other engine metalsProvides freeze-up and boil-over protection
      $49.91
    • (0 reviews)
      # mpn126712071
      Universal Prime™ All Vehicle Antifreeze by Prestone®. 1 Gallon. Prestone® Antifreeze is compatible with any antifreeze/coolant that is used in vehicles with aluminum and other engine metals. Meets or exceeds ASTM D3306 and D4985 for...
      Compatible with antifreeze/coolant that is used in vehicles with aluminum and other engine metalsProvides freeze-up and boil-over protection
      $67.53




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    Although they are just a small percentage of the liquid, it is the additives that differentiate between the different types of antifreeze. IAT (Inorganic Acid Technology) is the traditional green antifreeze, and has silicate or phosphate additives for protection. However, these additives deplete quickly, requiring this type of coolant to be replaced frequently. OAT (Organic Acid Technology) antifreeze uses additives mostly comprised of organic acids, while HOAT (Hybrid Organic Acid Technology) has both organic and inorganic additives. OAT and HOAT antifreeze are considered long-life coolants and are the type specified for most modern vehicles. The types of coolant should not be mixed, as the additives in one may not be compatible with the other. For optimal protection, always use the type of antifreeze specified by the vehicle manufacturer.

    Even long life coolants eventually wear down and are not able to provide freezing and boil over protection, and the additives become depleted. Most vehicle manufacturers have a recommended coolant replacement interval. When replacing the coolant, it’s a good idea to flush the cooling system, especially if there is evidence of scale and mineral buildup. A radiator flush product should be used as it will remove more rust, scale and sediment than plain water alone. Follow the directions on the flush container label, which may entail draining and filling the system several times. Always properly dispose of used coolant and wipe up any spills. Ingesting ethylene glycol can be fatal and children and animals are attracted to its sweet smell. Coolant also picks up metal particles like iron, aluminum, brass, copper, and lead, as it circulates through the cooling system, which classifies it as a hazardous waste.

    High performance engines that make lots of horsepower also tend to generate a lot of heat, and it’s not uncommon for vehicles with these engines to run hotter than their owners would like. Excessive heat can cause expensive engine damage, but the cure for the problem can be as simple as including a coolant additive when filling your system. These additives contain agents that reduce air bubbles and air pockets so there is complete coolant contact with all internal surfaces. This increases the coolant’s heat transfer abilities resulting in a cooler running engine. These additives also include rust and corrosion inhibitors to prevent buildup that can reduce cooling system efficiency.

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    Useful articles fast to read and guides easy to understand written by mechanics and car enthusiasts to turn your shopping experience with CARiD into a pleasure

    • Replacement Engine Cooling Parts
      October 27, 2014
      Antifreeze Explained: What It Does And Why It's...
      "Antifreeze" is a chemical, primarily consisting of ethylene glycol, which when mixed with water serves to lower the freezing point and raise the boiling point of the...
      by Michael Grayen
    • Replacement Engine Cooling Parts
      February 07, 2014
      Servicing Your Vehicle's Cooling System
      Everyone knows that your vehicle's engine needs its oil and filter changed at regular intervals. Most folks also know that there are other items which need regular...
      by Timothy Zahl

    Antifreeze & Additives Reviews

    Average rating:  4.5  4.5 - 10 reviews
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    APosted by Angelica (Waco, TX) / February 3, 2018
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