The market is filled up with a variety of coolant additive, but the best coolant additive that suits your needs can be a bit difficult to find. But, if you leave it in the hands of experts, like us, then you can be assured that you will land up with a reliable and trusted coolant additive. So, without wasting any further time, let’s dive into the article.

We spent hours scouring the internet for the best coolant additive, reading reviews and pulling from our own personal experiences to bring you our list of the top ten available on the market right now. We have presented a variety of options, so that there’s something out there for everyone. If you ask us personally, then the ultimate choice, that we would recommend you is Genuine Ford Fluid VC-8 Diesel Cooling System Additive – 16 oz. , RED. If you are looking for something a bit on the cheaper side, then you have got your Hy-Per Lube HPC100-3PK High Performance Super Coolant – 16 oz, (Pack of 3). For the rest options, read the article till the very end.

All ten of the options on our list have their own unique features that make them great, it’s up to you to decide which one makes the most sense for you. if you are looking for an efficient and effective coolant additive, our comparison chart should be of great help to you. Here is our comparative guide to the coolant additive available as well as our recommendations

Best coolant additive

Image
Product Title
Score

Red Line (80204) Water Wetter - Coolant Additives - 12 Oz Bottle
9.7

Motorcraft Ford Diesel Coolant Additive VC8 - 3 Bottles
9.5

Royal Purple 01600 Purple Ice Super-Coolant Radiator Additive - 12 oz.
9.2

Hy-Per Lube HPC100-3PK High Performance Super Coolant - 16 oz, (Pack of 3)
8.7

Red Line Water Wetter 12 oz (Pack of 2)
8.5

Genuine Ford Fluid VC-8 Diesel Cooling System Additive - 16 oz. , RED
8.1

VP Racing Fuels Madditive Cool Down - Radiator Systems Temperature Decrease 16 Ounces for All Radiators. Decreases Engine Temps up to 30 Degrees
7.7

Motorcraft VC8 Diesel engine coolant additive - 1 Pint(473 ml)
7.5

Lubegard 96430 Heavy Duty 2-in-1 Coolant Treatment, 32 fl. oz.
7.2

Mishimoto - MMRALC Liquid Chill Radiator Coolant Additive
6.9

Image
Product Title

Red Line (80204) Water Wetter - Coolant Additives - 12 Oz Bottle

9.7

Motorcraft Ford Diesel Coolant Additive VC8 - 3 Bottles

9.5

Royal Purple 01600 Purple Ice Super-Coolant Radiator Additive - 12 oz.

9.2

Hy-Per Lube HPC100-3PK High Performance Super Coolant - 16 oz, (Pack of 3)

8.7

Red Line Water Wetter 12 oz (Pack of 2)

8.5

Genuine Ford Fluid VC-8 Diesel Cooling System Additive - 16 oz. , RED

8.1

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

7.7

Motorcraft VC8 Diesel engine coolant additive - 1 Pint(473 ml)

7.5

Lubegard 96430 Heavy Duty 2-in-1 Coolant Treatment, 32 fl. oz.

7.2

Mishimoto - MMRALC Liquid Chill Radiator Coolant Additive

6.9

Red Line (80204) Water Wetter – Coolant Additives – 12 Oz Bottle


More Info and Images

Red Line (80204) Water Wetter - Coolant Additives - 12 Oz Bottle

$51.51
$14.29
 in stock
61 new from $12.98
Free shipping
Amazon.com
as of September 22, 2022 8:12 am

Features

  • Cutting edge technology - We at red line created this industry, pushing bubbles out of the way to ensure efficient & effective engine cooling
  • Ultimate cooling performance - Coolant additive with a unique agent that lowers temperatures by reducing and eliminating bubbles or vapor barrier that form on hot metal surfaces
  • Perform & protect - Waterwetter protects from rust & corrosion, allowing the use of straight water in racing or reduced antifreeze levels in warm climates
  • Easy to use - Use one bottle for most cars & light trucks, treats 3 to 5 gallons. Larger cooling systems should use 2 bottles; Small cooling systems should use 1oz per quart
  • Why red line - Established in 1979, red line products perform & protect better than any on the market. No compromises

Motorcraft Ford Diesel Coolant Additive VC8 – 3 Bottles


More Info and Images

Motorcraft Ford Diesel Coolant Additive VC8 - 3 Bottles

$28.28  in stock
3 new from $28.28
Free shipping
Amazon.com
as of September 22, 2022 8:12 am

Features

Part NumberVC8
Model4333058897
Is Adult Product

Royal Purple 01600 Purple Ice Super-Coolant Radiator Additive – 12 oz.


More Info and Images

Royal Purple 01600 Purple Ice Super-Coolant Radiator Additive - 12 oz.

$15.83  in stock
43 new from $8.99
Free shipping
Amazon.com
as of September 22, 2022 8:12 am

Features

  • OPTIMIZES PROTECTION
  • Prevents erosion and electrolysis
  • Compatible with all coolants types
  • Contains lubricants to protect the water pump
  • Fit type: Vehicle Specific

Hy-Per Lube HPC100-3PK High Performance Super Coolant – 16 oz, (Pack of 3)


More Info and Images

Hy-Per Lube HPC100-3PK High Performance Super Coolant - 16 oz, (Pack of 3)

$22.14  in stock
2 new from $22.14
Free shipping
Amazon.com
as of September 22, 2022 8:12 am

Features

  • Reduces Engine Cylinder Heat Temperatures
  • Allows Safe Advancement of Ignition Timing Resulting in More Horsepower
  • Prevents Overheating in High Performance and High Load Engines
  • Complete Protection from Rust, Corrosion and Electrolysis
  • Compatible With All Types of Antifreeze, does not contain ethylene glycol

Red Line Water Wetter 12 oz (Pack of 2)


More Info and Images

Red Line Water Wetter 12 oz (Pack of 2)

$26.95  in stock
6 new from $26.95
Free shipping
Amazon.com
as of September 22, 2022 8:12 am

Features

  • Convenient, pre-mixed coolant for motorcycles, ATVs, karts, etc.-pour and go
  • Blended with purified, deionized water and proper WaterWetter percentage
  • Reduces rust, corrosion and electrolysis, cleans and lubricates water pump seals
  • Compatible with all antifreeze and coolant
  • Satisfies ASTM D2570 and ASTM D1384 corrosion tests for glycol-based antifreezes

Genuine Ford Fluid VC-8 Diesel Cooling System Additive – 16 oz. , RED


More Info and Images

Genuine Ford Fluid VC-8 Diesel Cooling System Additive - 16 oz. , RED

$10.67  in stock
4 new from $10.67
Free shipping
Amazon.com
as of September 22, 2022 8:12 am

Features

  • Replaces fluorescent green-colored V119 premium antifreeze/coolant meeting Ford specification ESE-M97B44-A
  • Replaces yellow-colored Motorcraft gold antifreeze/coolant meeting Ford specification WSS-M97B51-A1
  • Designed to replace additives depleted between coolant change-outs
  • Now dyed yellow to eliminate engine coolant color change when mixing
  • Genuine OEM

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


More Info and Images

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

$19.39
$18.50
 in stock
26 new from $17.92
Amazon.com
as of September 22, 2022 8:12 am

Features

  • Cool Down coolant additive improves the performance of coolant and is safe for all radiator systems. It's ideal for racing, street, RV and tow vehicle applications

Motorcraft VC8 Diesel engine coolant additive – 1 Pint(473 ml)


More Info and Images

Motorcraft VC8 Diesel engine coolant additive - 1 Pint(473 ml)

$14.05  in stock
6 new from $14.05
Free shipping
Amazon.com
as of September 22, 2022 8:12 am

Features

  • In all heavy-duty, diesel engine cooling systems equipped with green-colored Motorcraft Premium Engine Coolant meeting Ford Specification ESE-M97B44-A
  • In all heavy-duty, diesel engine cooling systems equipped with yellow-colored Motorcraft Premium Gold Engine Coolant meeting Ford Specification WSS-M97B51-A1
  • Designed to replace additives depleted between coolant change-outs
  • Now dyed yellow to eliminate engine coolant color change when mixing

Lubegard 96430 Heavy Duty 2-in-1 Coolant Treatment, 32 fl. oz.


More Info and Images

Lubegard 96430 Heavy Duty 2-in-1 Coolant Treatment, 32 fl. oz.

$26.57  in stock
Amazon.com
as of September 22, 2022 8:12 am

Features

  • Provides 2-in-1 corrosion protection and temperature reduction
  • Provides complete protection from corrosion and chemical electrolysis
  • Protects wet sleeve cylinder liners from cavitation erosion
  • Prevents build-up of scales, deposits and slime that cause overheating
  • Significantly extends life of water pump impellers and seals

Mishimoto – MMRALC Liquid Chill Radiator Coolant Additive


More Info and Images

Mishimoto - MMRALC Liquid Chill Radiator Coolant Additive

$23.16  in stock
14 new from $17.95
Free shipping
Amazon.com
as of September 22, 2022 8:12 am

Features

  • Formulated to prevent future corrosion and reduce existing build-up
  • Decreases high coolant temperatures and does not require mixing
  • Net Weight: 4 fl oz. / Note: Non-corrosive 100% recyclable
  • Truck & SUV: 2 bottles / Sport Compact Cars: 1 bottle / ATV & Dirt Bike: 1oz per qt
  • Mishimoto Lifetime Warranty

This article was created with a hope that you will able to find the best coolant additive, suiting your requirements and we wish that we were able to succeed in our mission to do so. If you are looking for a cheap coolant additive because you will be making limited use of it, go for the VP Racing Fuels Madditive Cool Down – Radiator Systems Temperature Decrease 16 Ounces for All Radiators. Decreases Engine Temps up to 30 Degrees which will give you what you pay for. That being said, don’t forget to share the article with your friends and keep visiting geekydeck.com for more such informative and reviews articles.