Best Cooling System Additives (March 2024) - Rated by CherryPicks' Experts

At a Glance: Our Top Picks

Top 1

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

9.8
CPR Score
Top 2

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

9.7
CPR Score
Top 3

Red Line 80204 Engine Coolant Additive Supercool with Waterwetter - 12 Ounce ...

9.6
CPR Score
Tips


Our team has analyzed 297 products of different brands, including Motorcraft, Ford, Design Engineering, Evans, Mityvac, Bar's Leaks, Omix-Ada, Mishimoto, Red Line, Hayden Automotive, XADO, Hapco Products Co., Subaru, Klotz, Ferrari Maserati of Washington, The Penray Companies, DRIVEN, K-Seal, ATD Tools, RMI-25 And Cummins. The following list of top 30 best Cooling System Additives is selected for the customers by analyzing and comparing different features.

* Cherrypicksreviews.com is reader-supported, Our editor review, and recommend the best products based on extensive data analysis, if you click on the product links, we may earn a commission through qualifying products purchased.

The Best Cooling System Additives Rated by CherryPicks

Market Overview
Cooling System Additives Reviewed
  • Reviews Analyzed: 15,680 Items
  • CPR Avg. Rating: 8.6 / 10
30 Products Evaluated
  • Highest Price: $155.78
  • Lowest Price: $7.24
  • Avg. Price: $48.27
Price Disclaimer

Top 30 Cooling System Additives on Amazon (Verified You can Buy)

Top 1

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

Ford
VC-8
7.9 x 2.3 x 2.0 Inches
0.5 Pounds

Ratings for Ford (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
166 Auto Inc 2,751
TXN Supply -
Leon Auto Broker -

Features

Replaces fluorescent green-colored V119 premium antifreeze/coolant meeting Ford specification ESE-M97B44-A.Fit Type: Universal
Replaces yellow-colored Motorcraft gold antifreeze/coolant meeting Ford specification WSS-M97B51-A1
Show More
Top 2

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

Motorcraft
1.0 Pounds

Ratings for Motorcraft (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
G.P.S. 362
TXN Supply -

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
Show More
Top 3

Red Line 80204 Engine Coolant Additive Supercool with Waterwetter - 12 Ounce (2 Pack)

Red Line
0.75 Pounds

Ratings for Red Line (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
HRP / Power Oil Center 1,291
EZ Automotive -
Edo Performance -

Features

Unique agent for cooling systems that doubles the wetting ability of water
Rust and corrosion protection allows for use of straight water in racing or reduced antifreeze levels in warm climates
Show More
Top 4

Bar's Leaks High Mileage Cooling System Repair - 16.9 oz. (Pack of 4),1150-4PK

Bar's Leaks
1150-4PK
8.4 x 3.6 x 1.8 Inches
5.29 Pounds

Ratings for Bar's Leaks (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Stops cooling system leaks
Package Weight: 2.43 kilograms
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Top 5

Bar's Leaks J-100 DiFM Cooling System Treatment - 5 Grams, Tan

Bar's Leaks
J-100
6.6 x 3.6 x 3.6 Inches

Ratings for Bar's Leaks (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
Lime Miami LLC -

Features

Seals internal, external and coolant to oil leaks
Stops radiator tank seal leaks
Show More
Top 6

Subaru SOA635071 OEM Coolant System Conditioner

Subaru
SOA635071
0.0 x 0.0 x 0.0 Inches

Ratings for Subaru (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
SubaruPartsOnline 4,912

Features

LOWEST COST TO OWN
Subaru OEM Coolant System Conditioner
Show More
Top 7

Hayden Automotive 526 Remote Transmission Oil Cooling System

Hayden Automotive
526
0.0 x 0.0 x 0.0 Inches
5.1 Pounds

Ratings for Hayden Automotive (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Plate and fin design
Self contained cooler/fan combination for remote mounting
Show More
Top 8

Subaru Genuine Cooling System Conditioner Coolant Head Gasket 12 Pack Case SOA635071

Subaru

Ratings for Subaru (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
SubaruPartsOnline 4,912
Subaru Superstore -

Features

Used only with cars with green coolant .
Subaru Genuine Coolant Cond. SOA635071 X12 ( Case discount)
Show More
Top 9

Red Line (80204) Water Wetter - Coolant Additives (12 PK Case)

Red Line
80204 CASE/12
11.0 x 8.5 x 9.1 Inches
11.75 Pounds

Ratings for Red Line (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Unique agent for cooling systems that doubles the wetting ability of water
Rust and corrosion protection allows for use of straight water in racing or reduced antifreeze levels in warm climates
Show More
Top 10

Liphontcta Cooling System Treatment Gallon (4 Quart Bottles)

RMI-25

Ratings for RMI-25 (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
RMI-25 Dealer -

Features

Flushes, cleans, lubricates, and conditions your cooling system
Top 11

EVANS Cooling Systems EC61001 Heavy Duty Waterless Engine Coolant, 128 fl. oz.

Evans
EC61001
12.2 x 4.1 x 7.3 Inches
9.55 Pounds

Ratings for Evans (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
SDHQ MOTORSPORTS -
Edo Performance -
ToBe Continued :// -

Features

Specially formulated for use in all heavy duty diesel, CNG, and LNG engines, in both stationary and vehicle applications Especially effective in severe-duty service such as vocational and off-road
Ready to use Requires no supplemental coolant additive (SCA) additions Contains no phosphates, silicates, borates, amines, or nitrite
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Top 12

Hapco Products - Cooling System Sealer (Pack of 1)

Hapco Products Co.
1.0 Pounds

Ratings for Hapco Products Co. (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Hapco Products Co. -
Craigsparts -

Features

Use for head gasket, heater core, freeze plug, block and radiator leaks
Mixes with all types of antifreeze
Show More
Top 13

Omix-Ada | 17118.26 | Cooling System Kit | Fits 1991-1995 Jeep Wrangler YJ 4.0L

Omix-Ada
17118.26
14.0 x 22.0 x 6.0 Inches

Ratings for Omix-Ada (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

OE style
Direct fit
Show More
Top 14

ATD Tools 3300 Cooling System Pressure Test Kit

ATD Tools
3300
17.5 x 14.0 x 4.5 Inches
10.0 Pounds

Ratings for ATD Tools (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
National Tool Warehouse 1,751

Features

Hand pressure pump with color coded 0-35 PSI gauge and push button pressure relief valve
Temperature gauge
Show More
Top 15

Cummins 3377438 Cooling System Additive Fluorescent Dye

Cummins
3377438

Ratings for Cummins (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Class8TruckParts -

Features

Fluorescent Tracer for Coolant - 4 ounce plastic bottle
Top 16

Hayden Automotive 525 Remote Transmission Oil Cooling System

Hayden Automotive
525
19.0 x 11.4 x 4.3 Inches
5.15 Pounds

Ratings for Hayden Automotive (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Tube and fin design
Self contained cooler/fan combination for remote mounting
Show More
Top 17

Design Engineering 40200 Radiator Relief Coolant Additive for All Water Cooled Engines, 16 oz.

Design Engineering
40200
0.0 x 0.0 x 0.0 Inches
1.1 Pounds

Ratings for Design Engineering (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

No mixing required; just add to cooling system and reduce engine operating temperature up to 30 degrees Fahrenheit
Formulated with a corrosion inhibitor and reduces pre-existing scale build-up
Show More
Top 18

Pencool 2000 200064 Engine Cooling System Treatment - 1/2-Gallon Jug

The Penray Companies
200064

Ratings for The Penray Companies (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Designed for Easy Use
Reduces Corrosion, Cavitation Erosion, and Liner Pitting
Show More
Top 19

Omix-Ada | 17118.28 | Cooling System Kit | Fits 1997-1999 Jeep Wrangler TJ 4.0L

Omix-Ada
17118.28
14.0 x 26.0 x 6.0 Inches

Ratings for Omix-Ada (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
TACTIK 4X4 5,963

Features

FITMENT | For 1997-1999 Jeep Wrangler TJ 4.0L
OMIX 17118.28 | Cooling System Kit
Show More
Top 20

Pencool 3000 With Stabil-Aid 300064 Cooling System Treatment - 1/2-Gallon Jug

The Penray Companies
300064
4.0 Pounds

Ratings for The Penray Companies (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Prevents Formation of Gel Deposits that Plug Radiator Passages, After Coolers, and Oil Coolers
Reduces Corrosion, Cavitation Erosion and Liner Pitting
Show More
Top 21

EVANS Cooling Systems EC42001 Waterless Prep Fluid, 128 fl. oz.

Evans
EC42001
12.0 x 4.1 x 7.3 Inches
9.5 Pounds

Ratings for Evans (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
HRP / Power Oil Center 1,291
ToBe Continued :// -

Features

Engineered specifically to purge the cooling system before installing new waterless coolant
Seeks out old coolant and water that remain after draining existing antifreeze/water mixture from an engine
Show More
Top 22

Mityvac Universal Cooling System Test Kit, 2 pcs., Black

Mityvac
MV4534
15.0 x 12.0 x 4.0 Inches
0.009 Pounds

Ratings for Mityvac (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
JBTools 232
Autoplicity ✅ 1,143
eToolDirect -

Features

Product type :FISHING_EQUIPMENT
Country of manufacture: Taiwan
Show More
Top 23

Omix-Ada | 17118.29 | Cooling System Kit | Fits 2000-2006 Jeep Wrangler TJ 4.0L

Omix-Ada
17118.29
12.0 x 26.0 x 4.0 Inches

Ratings for Omix-Ada (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

OE style
Direct fit
Show More
Top 24

XADO ATOMEX Stop Leak Radiator Coolant/Antifreeze Additive - Restore Radiator Parts & Prevent Future Damage (Bottle, 250 ml)

XADO
XA 40913

Ratings for XADO (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
XADO TECH, LLC -

Features

Eliminates The Need For Expensive Repair
Universal Application For Gasoline And Diesel Engines Of Automobiles And Other Equipment
Show More
Top 25

K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair

K-Seal
ST5501
7.874 x 2.0 x 6.0 Inches
0.6041 Pounds

Ratings for K-Seal (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Permanent Coolant Leak Repair - Just Shake, Pour And Go.Fit Type: Universal
Mixes With All Antifreeze
Show More
Top 26

Klotz (KL-600 Nitro Power Additive

Klotz
KL-600
2.6 x 2.6 x 7.2 Inches
12.3 Pounds

Ratings for Klotz (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
MX PowerPlay 3,791
Powersport Superstore 3,270
Iron Pony Direct, LLC -
TBR WHOLESALE INC -

Features

Klotz KL-600 - Nitro Power Additive Additive 1 Pt
Top 27

Mishimoto - MMRALC Liquid Chill Radiator Coolant Additive

Mishimoto
MMRALC
2.0 x 2.0 x 6.0 Inches
0.0006 Pounds

Ratings for Mishimoto (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -

Features

Formulated to prevent future corrosion and reduce existing build-up
Decreases high coolant temperatures and does not require mixing
Show More
Top 28

Omix-Ada | 17118.21 | Cooling System Kit | Fits 1972-1986 Jeep CJ 4.2L

Omix-Ada
17118.21
10.0 x 21.0 x 4.0 Inches
4.06 Pounds

Ratings for Omix-Ada (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
TACTIK 4X4 5,963
WunderCarParts -

Features

OE style
Direct fit
Show More
Top 29

Driven Racing Oil 50030 Coolant System Protector (12oz Bottle), 12 oz

DRIVEN
50030
0.0 x 0.0 x 0.0 Inches
0.6 Pounds

Ratings for DRIVEN (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Amazon.com -
Elite Tool Center 8,796
Fast Track Auto -

Features

Reduces temperatures
Protects water pumps
Show More
Top 30

Ferrari Maserati of Washington BG Universal Cooling System Cleaner

Ferrari Maserati of Washington

Ratings for Ferrari Maserati of Washington (CPR Score)

Seller CPR Rank Amazon Fulfilled Prime Free Shipping
Ferrari Maserati of Washington -

Top 10 Cooling System Additives - Verified to Buy (Mar. 2024)

Top 10 Cooling System Additives Brands on Amazon

Here is the list of top-rated brands that were evaluated by CherryPicks.

  • Ford
  • Motorcraft
  • Red Line
  • Bar's Leaks
  • Subaru
  • Hayden Automotive
  • RMI-25
  • Evans
  • Hapco Products Co.
  • Omix-Ada

Top 10 Cooling System Additives Sellers: CPR Seller Rank List

CPR sellers rank is based on CherryPicks-AI bestselling ranking system that helps us analyze each seller's sales trends. The List of top seller ranks is our in-house data, essential for our product ranking to help you make the right shopping choice.

Rank Name Yearly Feedbacks Avg. Ratings
🥇 JBTools 7,916 4.8
🥈 G.P.S. 6,146 4.9
🥉 Autoplicity ✅ 2,948 4.5
4 HRP / Power Oil Center 2,704 4.9
5 National Tool Warehouse 2,240 4.7
6 166 Auto Inc 1,616 4.9
7 Powersport Superstore 1,428 4.7
8 MX PowerPlay 1,283 4.7
9 SubaruPartsOnline 1,054 4.8
10 TACTIK 4X4 906 4.5
View or download top Cooling System Additives seller & rating report
JBTools [7916] G.P.S. [6146] Autoplicity ✅ [2948] HRP / Power Oil Center [2704] National Tool Warehouse [2240] 166 Auto Inc [1616] Powersport Superstore [1428] MX PowerPlay [1283] SubaruPartsOnline [1054] TACTIK 4X4 [906] JBTools 28% G.P.S. 22% Autoplicity ✅ 10% HRP / Power Oil Center 10% National Tool Warehouse 8% 166 Auto Inc 6% Powersport Superstore 5% MX PowerPlay 5% SubaruPartsOnline 4% TACTIK 4X4 3%

[Get] Cooling System Additives Deals (✅Exclusively for Prime)

What does "Amazon Fulfilled" Mean?

Amazon Fulfilled refers to products handled by Amazon's logistics, which indicates that the product is stored, packed, and shipped by Amazon from one of its fulfillment centers.

When you order a product that is "Amazon Fulfilled," Amazon takes care of the storage, packing, shipping, and customer service for that product. This often ensures quicker delivery and better customer service compared to products that are not fulfilled by Amazon. It also means that the product is eligible for Amazon's return policy.

What does "Prime" Mean?

"Prime" refers to Amazon Prime Member (Join Amazon Prime Now), which indicates eligibility for Prime benefits. When you see "Prime" next to a product on Amazon, This generally means that if you are  an Amazon Prime member, you can get free two-day shipping on that product, and sometimes even same-day or one-day shipping depending on your location.

Prime members also have access to other benefits, including 2-Day ShippingExclusive Member DealsPrime VideoBuy With PrimeAmazon MusicPrime Gaming, and more.

Shop Prime Cooling System Additives Deals

What does "Free Shipping" Mean?

"Free Shipping" means that you will not be charged additional fees for the shipping of that product. However, unlike "Prime," which usually guarantees fast two-day shipping, "Free Shipping" doesn't necessarily mean fast shipping.

Sometimes there might be a minimum purchase requirement to qualify for free shipping if you are not a Prime member. For Prime members, the "Free Shipping" usually refers to the free two-day shipping that is one of the benefits of the Prime membership.


Why Should You Trust Us?

Now hundreds and thousands of Oils & Fluids supplies are available on Amazon, Picking the right one is not easy, and that may take a lot of your time, Right? and What is the best Cooling System Additives to buy for new March 2024?

CherryPicks’s Methodology for Evaluating Cooling System Additives

We developed the CherryRatings-AI system to identify and score reviews and the CherryPicks-AI ranking system that uses TensorFlow framework to generate the best list, It will help us evaluate Oils & Fluids items that sell on Amazon. The score of items is based on over ten parameters such as analyzing customer review content, product reviewing rating statistics, brand reputation evaluation, comparing product price with features, etc, You can visit How We Rank to learn more in detail.

We collected and analyzed 297 of Cooling System Additives reviews based on our selection criteria. It helped us shortlist the top qualified and rated Cooling System Additives for Oils & Fluids, We found that most customers choose Cooling System Additives with an average price of $48.27, and the top brands are Motorcraft, Ford, Design Engineering, Evans, Mityvac, Bar's Leaks, Omix-Ada, Mishimoto, Red Line, Hayden Automotive, XADO, Hapco Products Co., Subaru, Klotz, Ferrari Maserati of Washington, The Penray Companies, DRIVEN, K-Seal, ATD Tools, RMI-25 And Cummins. 

Then our expert-level editors reviewed all those quality items and selected the top 30 Cooling System Additives for you, We have researched hundreds of sellers and picked the top sellers for Oils & Fluids, including JBTools, G.P.S., Autoplicity ✅, HRP / Power Oil Center, National Tool Warehouse, 166 Auto Inc, Powersport Superstore, MX PowerPlay, SubaruPartsOnline, TACTIK 4X4, Elite Tool Center And WunderCarParts. The Genuine Ford Fluid VC-8 Diesel Cooling System A... are available for purchase right now, and The seller of #1 rank product has received honest feedback from 377 consumers with an average rating of 4.8.

We've helped a lot of satisfied users get the right Automotive product based on their needs, and save lots of time for them to pick Cooling System Additives to buy.


Written By Craig Hill

Christian Buccho is a mechanic in love with automotive repairs. He will be sharing his experience with us an automotive repairer over the years. He will not only provide us with informative articles, he would also be providing us with hands-on reviews on automotive parts.