Top 29 Cooling System Additives on Amazon (Verified You can Buy)
WIX 24056 Radiator Liquid Cooling Treatment
Ratings for Wix (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ❌ | ❌ | ❌ |
| USAutopartsCar | - | ❌ | ❌ | ❌ |
| Newparts | 3,404 | ❌ | ❌ | ❌ |
Features
Red Line 80204 Engine Coolant Additive Supercool with Waterwetter - 12 Ounce (2 Pack)
Ratings for Red Line (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| R/A Hoerr Incorporated | 1,441 | ✅ | ✅ | ✅ |
| Edo Performance | - | ✅ | ✅ | ✅ |
| EZ Automotive | - | ✅ | ✅ | ✅ |
| Avalon Online | - | ❌ | ❌ | ❌ |
| B and S Supply | 6,012 | ❌ | ❌ | ❌ |
Features
Smilyeez BG Universal PN 546 Coolant Additive with Pocket Screwdriver (1)
Ratings for Smilyeez (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Smilyeez | - | ❌ | ❌ | ❌ |
Features
Design Engineering 040208 Chill Charger Water-to-Air Intercooler Additive, 16 oz.
Ratings for Design Engineering (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ✅ | ✅ | ✅ |
Features
K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair
Ratings for K-Seal (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ✅ | ✅ | ✅ |
| Solv-Tech | - | ❌ | ❌ | ❌ |
Features
RMI-25 Cooling System Treatment 8 ounce
Ratings for RMI-25 (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| RMI-25 Dealer | - | ✅ | ✅ | ✅ |
VP Racing Fuels 2085 Cool Down Coolant Performance Improver, 16 Ounces (2 Pack)
Ratings for VP Racing (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| R/A Hoerr Incorporated | 1,441 | ❌ | ❌ | ❌ |
Features
ERRECOM Brilliant Coolant Ultra | UV Dye for Coolant Leak Detection | Detects Radiator & Cooling System Leaks | Compatible with All Antifreeze & Coolant Used in Gasoline & Diesel Engines | 0.34 fl oz
Ratings for ERRECOM (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| ERRECOM USA | - | ❌ | ❌ | ❌ |
Features
Liqui Moly Radiator Cleaner | 300 ml | Cooler additive | SKU: 2051
Ratings for Liqui Moly (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| TRADEGROUP-USA | - | ❌ | ❌ | ❌ |
| Impart Auto Parts | - | ❌ | ❌ | ❌ |
| SparkleFront | - | ❌ | ❌ | ❌ |
| Smash It | - | ❌ | ❌ | ❌ |
Features
Cummins Filtration Fleetguard DCA60L Coolant Additive 16oz. DCA4
Ratings for Fleetguard (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| CROSSFILTERS | 8,730 | ❌ | ❌ | ❌ |
The 3 Pack of Irontite Additives - Thoro-Flush, All Weather Seal and Ceramic Motor Seal. 468-9190-16
Ratings for IRONTITE (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| G.P.S. | 1,213 | ✅ | ✅ | ✅ |
| Irontite | - | ✅ | ✅ | ✅ |
Features
Liqui Moly Radiator Stop Leak | 150 ml | Cooler additive | SKU: 8956
Ratings for Liqui Moly (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Onogo US | 3,040 | ❌ | ❌ | ❌ |
| Smash It | - | ❌ | ❌ | ❌ |
Design Engineering 40200 Radiator Relief Coolant Additive for All Water Cooled Engines, 16 oz.
Ratings for Design Engineering (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ✅ | ✅ | ✅ |
Features
Smilyeez Listing for BG K5901 Cooling System Flush Coolant Service Kit BG Universal Cooling System Cleaner PN 540 & BG Universal PN 546
Ratings for Smilyeez (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| SAME DAY WHOLESALE | - | ❌ | ❌ | ❌ |
| Smilyeez | - | ❌ | ❌ | ❌ |
Features
Bar's Leaks High Mileage Cooling System Repair, Grey
Ratings for Bar's Leaks (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ❌ | ❌ | ❌ |
Features
Fleetguard Cummins Coolant Plus
Ratings for Fleetguard (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Doxa-Worldwide | 7,580 | ✅ | ✅ | ✅ |
| Abparts | - | ✅ | ✅ | ✅ |
| Califiltrations | - | ✅ | ✅ | ✅ |
| allbargainsusa | - | ❌ | ❌ | ❌ |
| Parts Pantry | - | ❌ | ❌ | ❌ |
| E-Truck Parts LLC | - | ❌ | ❌ | ❌ |
Features
Mayhems - Water Cooling PC Coolant Additive - Inhibitor Plus - Prevents Metal Corrosion, 15 ml
- Unknown: English
Ratings for Mayhems (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Liquid Gaming International | - | ❌ | ❌ | ❌ |
Features
Arctic Air for R12, 3 cans and a Brass Charging Gauge
Ratings for Generic (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| CME Biz | - | ❌ | ❌ | ❌ |
Features
Subaru SOA635071 OEM Coolant System Conditioner
Ratings for Subaru (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| SubaruPartsOnline | 6,950 | ✅ | ✅ | ✅ |
| CAG SUBARU | - | ❌ | ❌ | ❌ |
Features
BG Cooling System Additive 8 FL. OZ. PN 5468
Ratings for BG (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Impart Auto Parts | - | ❌ | ❌ | ❌ |
Features
Smilyeez Listing for BG Cooling System Cleaner PN 540 (1 Bottle) with Pocket Screwdriver
Ratings for Smilyeez (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Smilyeez | - | ❌ | ❌ | ❌ |
Features
Red Line 80205, Supercool Extreme Powersports Coolant, Safe for Track, Street, Off-Roa - 1/2 Gallon (64 Ounces)
Ratings for Red Line (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| R/A Hoerr Incorporated | 1,441 | ❌ | ❌ | ❌ |
Features
ACDelco GM Original Equipment 10-5057 (12378563) Engine Cooling System Tracer Dye - 1 oz
Ratings for ACDelco (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Amazon.com | - | ❌ | ❌ | ❌ |
Features
Royal Purple 01600 Purple Ice Radiator Coolant Additive 12 oz. Bottle Pack of 6
Ratings for Royal Purple (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Trends Auto | 784 | ❌ | ❌ | ❌ |
CC2610 Restore, Cooling System Cleaner (2 Gallons)
Ratings for Generic (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| PartAndFilters | - | ❌ | ❌ | ❌ |
Features
AUDI Genuine G-001-770-A2 - ADDITIVE
Ratings for Volkswagen (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Bergstrom VLI | - | ❌ | ❌ | ❌ |
Features
Genuine Ford Fluid VC-8 Diesel Cooling System Additive - 16 oz., 2 count.
Ratings for Ford (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Restless wholesale llc | - | ❌ | ❌ | ❌ |
| Metro 24 Wholesale, Inc. | - | ❌ | ❌ | ❌ |
| Easy-2-Shop | - | ❌ | ❌ | ❌ |
| Dda Auto Parts Inc | - | ❌ | ❌ | ❌ |
| Seashell World | - | ❌ | ❌ | ❌ |
Features
Mayhems - Water Cooling PC Coolant Additive - Hades Plus and Inhibitor Plus - Complete System Protection, 15 ml
- Unknown: English
Ratings for Mayhems (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Liquid Gaming International | - | ❌ | ❌ | ❌ |
Features
Genuine Ford Fluid VC-8 Diesel Cooling System Additive - 16 oz. , RED
Ratings for Ford (CPR Score)
| Seller | CPR Rank | Amazon Fulfilled | Prime | Free Shipping |
|---|---|---|---|---|
| Leon Auto Broker | - | ✅ | ✅ | ✅ |
| 166 Auto Inc | 7,793 | ✅ | ✅ | ✅ |
| Wenport | - | ✅ | ✅ | ✅ |
| Restless wholesale llc | - | ❌ | ❌ | ❌ |
| International Quality Parts | - | ❌ | ❌ | ❌ |
| Homestead Supply & More ✅ | 3,139 | ❌ | ❌ | ❌ |
| ADVENTURER'S BAG | 825 | ❌ | ❌ | ❌ |
Features
Top 10 Cooling System Additives - Verified to Buy (September 2026)
- 1. WIX 24056 Radiator Liquid Cooling Treatment
- 2. Red Line 80204 Engine Coolant Additive Supercool with Waterwetter -...
- 3. Smilyeez BG Universal PN 546 Coolant Additive with Pocket Screwdriver...
- 4. Design Engineering 040208 Chill Charger Water-to-Air Intercooler Additive, 16 oz.
- 5. K-Seal ST5501 Multi Purpose One Step Permanent Coolant Leak Repair
- 6. RMI-25 Cooling System Treatment 8 ounce
- 7. VP Racing Fuels 2085 Cool Down Coolant Performance Improver, 16...
- 8. ERRECOM Brilliant Coolant Ultra | UV Dye for Coolant Leak...
- 9. Liqui Moly Radiator Cleaner | 300 ml | Cooler additive...
- 10. Cummins Filtration Fleetguard DCA60L Coolant Additive 16oz. DCA4
Top 10 Cooling System Additives Brands on Amazon
Here is the list of top-rated brands that were evaluated by CherryPicks.
- Wix
- Red Line
- Smilyeez
- Design Engineering
- K-Seal
- RMI-25
- VP Racing
- ERRECOM
- Liqui Moly
- Fleetguard
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.
- 1. Trends Auto : 60,506 Yearly Feedback , Avg. Ratings 4.7
- 2. ADVENTURER'S BAG : 57,644 Yearly Feedback , Avg. Ratings 4.9
- 3. G.P.S. : 42,949 Yearly Feedback , Avg. Ratings 4.9
- 4. R/A Hoerr Incorporated : 37,533 Yearly Feedback , Avg. Ratings 4.9
- 5. Onogo US : 20,354 Yearly Feedback , Avg. Ratings 4.5
- 6. Homestead Supply & More ✅ : 19,991 Yearly Feedback , Avg. Ratings 4.2
- 7. Newparts : 18,621 Yearly Feedback , Avg. Ratings 4.2
- 8. B and S Supply : 11,304 Yearly Feedback , Avg. Ratings 4.7
- 9. SubaruPartsOnline : 9,747 Yearly Feedback , Avg. Ratings 4.8
- 10. Doxa-Worldwide : 8,970 Yearly Feedback , Avg. Ratings 4.9
| Rank | Name | Yearly Feedbacks | Avg. Ratings |
|---|---|---|---|
| 🥇 | Trends Auto | 60,506 | 4.7 |
| 🥈 | ADVENTURER'S BAG | 57,644 | 4.9 |
| 🥉 | G.P.S. | 42,949 | 4.9 |
| 4 | R/A Hoerr Incorporated | 37,533 | 4.9 |
| 5 | Onogo US | 20,354 | 4.5 |
| 6 | Homestead Supply & More ✅ | 19,991 | 4.2 |
| 7 | Newparts | 18,621 | 4.2 |
| 8 | B and S Supply | 11,304 | 4.7 |
| 9 | SubaruPartsOnline | 9,747 | 4.8 |
| 10 | Doxa-Worldwide | 8,970 | 4.9 |
[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 Shipping, Exclusive Member Deals, Prime Video, Buy With Prime, Amazon Music, Prime 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 September 2026?
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 147 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 $27.30, and the top brands are Generic, ACDelco, Liqui Moly, Red Line, Ford, Bar's Leaks, Royal Purple, Wix, Design Engineering, BG, Volkswagen And Subaru.
Then our expert-level editors reviewed all those quality items and selected the top 29 Cooling System Additives for you, We have researched hundreds of sellers and picked the top sellers for Oils & Fluids, including Trends Auto, ADVENTURER'S BAG, G.P.S., R/A Hoerr Incorporated, Onogo US, Homestead Supply & More ✅, Newparts, B and S Supply, SubaruPartsOnline, Doxa-Worldwide, 166 Auto Inc And CROSSFILTERS. The WIX 24056 Radiator Liquid Cooling Treatment are available for purchase right now, and The seller of #1 rank product has received honest feedback from 27 consumers with an average rating of 4.4.
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.
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.