---
title: "antifreeze tester — Niche Verdict: Worth a look (55/100) | Amazon United States - Flapen"
canonical_url: "https://flapen.com/amazon/research/us/automotive/antifreeze-tester"
last_updated: "2026-07-13T18:58:22.228Z"
locale: en
meta:
  description: "antifreeze tester shows low returns (1.5%), but soft demand (-37.5% this quarter) keeps it on the watch list."
  "og:description": "antifreeze tester shows low returns (1.5%), but soft demand (-37.5% this quarter) keeps it on the watch list."
  "og:title": "antifreeze tester — Niche Verdict: Worth a look (55/100) | Amazon United States - Flapen"
---

Back to Flapen home

# **antifreeze tester**

**Worth a look**

Shows low returns (1.5%), but soft demand (-37.5% this quarter) keeps it on the watch list.

Market size 39Growth 6Conversion 78Competition 56Returns 85Price range 63Avg price 77Brand share 78Review moat 79Quality gap 47

**Returns**

**Great****1.5%**

return rate — above 6% kills the launch gate

**Review moat**

**Great****410.72**

avg incumbent reviews — the moat a new listing must climb

**Conversion**

**Great****7.9%**

search→purchase rate — share of searches ending in a sale

**Brand share**

**Great****57%**

top-5 brand share — no brand owns this niche

**Avg price**

**Great****$15.62**

avg listing price — sweet spot $15–$100

**Price range**

**Good****$4.29–$139.04**

cheapest to priciest tracked listing — scored on the share inside $15–$100

**Competition**

**Good****51%**

top-5 click share — leaders hold, buyers still browse

**Quality gap**

**Okay****4.5★**

avg incumbent rating — lower means beatable quality

**Market size**

**Okay****$198K**

$198K/yr · 161K searches

**Growth**

**Bad****-37.5%**

90-day search growth — must beat 0% to launch

## **Competition**

The top 5 products take 51% of clicks — established leaders, but buyers still shop beyond them.

**Brands**

**28 **▲rising

**Sellers**

**81**

**Top-5 brand share**

**57%**

**Open market**

**36%**

- KVAEY12% - aichose12% - ATD12% - SHMZK11% - OEMTOOLS10% - Phoenix Systems8%

## **Product shelf**

Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.

0%3%$6K6%$12K9%$18K12%$24K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales

Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

All 32 tracked products in this niche — three views at once, no toggling.

### **Top sellers**

by 90-day click share

[1![ATD Tools 1106 Professional Antifreeze and Coolant Tester](https://m.media-amazon.com/images/I/31WH0hOTqmL.jpg)**ATD Tools 1106 Professional Antifreeze and Coolant Tester**ATD**$11.39**4.3★542 rev](https://www.amazon.com/dp/B00ARAJJ9G) [2![KVAEY 1PCS Coolant Tester Accessory Automotive Professional Antifreeze Densitometer Freezing Testing Tool Universal Coolant Hydrometer Tester for Winter and Summer Car Accessories](https://m.media-amazon.com/images/I/31txVxeYJNL.jpg)**KVAEY 1PCS Coolant Tester Accessory Automotive Professional Antifreeze Densitometer Freezing Testing Tool Universal Coolant Hydrometer Tester for Winter and Summer Car Accessories**KVAEY**$7.64**4.6★129 rev](https://www.amazon.com/dp/B0DLMRXWBJ) [3![SHMZK Coolant Tester Accessory Dial Type Antifreeze Coolant Car Battery Hydrometer Tester Automotive Anti-Freeze Battery Liquid Densitometer Coolant Tester Car Accessories (1 PCS)](https://m.media-amazon.com/images/I/31JIHSw23HL.jpg)**SHMZK Coolant Tester Accessory Dial Type Antifreeze Coolant Car Battery Hydrometer Tester Automotive Anti-Freeze Battery Liquid Densitometer Coolant Tester Car Accessories (1 PCS)**SHMZK**$7.32**4.5★127 rev](https://www.amazon.com/dp/B0DSSZ8WGH) [4![OEMTOOLS 24507 Professional Series Ethylene Glycol Antifreeze Tester Tests Freezing Point of Antifreeze and Proper Water/Coolant Mixture](https://m.media-amazon.com/images/I/41kX7I1SeOL.jpg)**OEMTOOLS 24507 Professional Series Ethylene Glycol Antifreeze Tester Tests Freezing Point of Antifreeze and Proper Water/Coolant Mixture**OEMTOOLS**$15.23**4.6★499 rev](https://www.amazon.com/dp/B01BW394NC) [5![Phoenix Systems 8006-B Double-Ended Brake Fluid + Coolant Test Strips (15 foil wrapped test strips) 1 Pack](https://m.media-amazon.com/images/I/517fLNBvv5L.jpg)**Phoenix Systems 8006-B Double-Ended Brake Fluid + Coolant Test Strips (15 foil wrapped test strips) 1 Pack**Phoenix Systems**$16.37**4.6★1,383 rev](https://www.amazon.com/dp/B0753MZT7P)

**~~View all top sellers →~~**

### **Newest**

by launch date

[![EWOJUYE Upgraded Dial Type Antifreeze Tester Automotive with 7.87 Long Tube Dual Scale Coolant Tester Automotive for Accurate Freeze Point and Boil Point Durable Anti Freeze Testers](https://m.media-amazon.com/images/I/41j8f+kB25L.jpg)**EWOJUYE Upgraded Dial Type Antifreeze Tester Automotive with 7.87 Long Tube Dual Scale Coolant Tester Automotive for Accurate Freeze Point and Boil Point Durable Anti Freeze Testers**EWOJUYE**$4.29**4 rev6mo ago](https://www.amazon.com/dp/B0GDG1NF9K) [![TSIEBRV Dial Type Antifreeze Tester for Coolant Dual Scale (F/C) Coolant Tester Automotive for Accurate Freeze & Boil Point Testing Professional Anti Freeze Testers Automotive](https://m.media-amazon.com/images/I/41k9tRUV2UL.jpg)**TSIEBRV Dial Type Antifreeze Tester for Coolant Dual Scale (F/C) Coolant Tester Automotive for Accurate Freeze & Boil Point Testing Professional Anti Freeze Testers Automotive**TSIEBRV**$4.66**15 rev6mo ago](https://www.amazon.com/dp/B0G99Q1BN5) [![Antifreeze Tester Automotive Dial Type Antifreeze Coolant Tester Hydrometer Car Battery Liquid Densitometer Coolant Anti Freeze Universal Tool for Car System Winter and Summer](https://m.media-amazon.com/images/I/41JNfLs6gRL.jpg)**Antifreeze Tester Automotive Dial Type Antifreeze Coolant Tester Hydrometer Car Battery Liquid Densitometer Coolant Anti Freeze Universal Tool for Car System Winter and Summer**Xtruck**$6.99**15 rev7mo ago](https://www.amazon.com/dp/B0G5PTP44H) [![VKQTS Antifreeze Tester Automotive Professional Antifreeze Coolant Tester with Color-Coded Floats Portable Antifreezes Testers for Coolant Car Truck Engine Anti-Freeze Protection](https://m.media-amazon.com/images/I/41lcqv+hOXL.jpg)**VKQTS Antifreeze Tester Automotive Professional Antifreeze Coolant Tester with Color-Coded Floats Portable Antifreezes Testers for Coolant Car Truck Engine Anti-Freeze Protection**VKQTS**$9.22**4 rev7mo ago](https://www.amazon.com/dp/B0G3TMP8QK) [![Turcee Dial Type Antifreeze Tester Automotive Tools Professional Car Coolant Tester with F/C Dual Scale Design Portable Anti Freeze Testers Automotive for Measuring Freezing/Boiling Points](https://m.media-amazon.com/images/I/41GFcGeQp0L.jpg)**Turcee Dial Type Antifreeze Tester Automotive Tools Professional Car Coolant Tester with F/C Dual Scale Design Portable Anti Freeze Testers Automotive for Measuring Freezing/Boiling Points**Turcee**$5.61**17 rev8mo ago](https://www.amazon.com/dp/B0G1BLVBM2)

**~~View all new products →~~**

### **Trending**

90-day click momentum

[![EWOJUYE Upgraded Dial Type Antifreeze Tester Automotive with 7.87 Long Tube Dual Scale Coolant Tester Automotive for Accurate Freeze Point and Boil Point Durable Anti Freeze Testers](https://m.media-amazon.com/images/I/41j8f+kB25L.jpg)**EWOJUYE Upgraded Dial Type Antifreeze Tester Automotive with 7.87 Long Tube Dual Scale Coolant Tester Automotive for Accurate Freeze Point and Boil Point Durable Anti Freeze Testers**EWOJUYE**$4.29**3.5★**▲ 509%**](https://www.amazon.com/dp/B0GDG1NF9K) [![VKQTS Antifreeze Tester Automotive Professional Antifreeze Coolant Tester with Color-Coded Floats Portable Antifreezes Testers for Coolant Car Truck Engine Anti-Freeze Protection](https://m.media-amazon.com/images/I/41lcqv+hOXL.jpg)**VKQTS Antifreeze Tester Automotive Professional Antifreeze Coolant Tester with Color-Coded Floats Portable Antifreezes Testers for Coolant Car Truck Engine Anti-Freeze Protection**VKQTS**$9.22**5.0★**▲ 503%**](https://www.amazon.com/dp/B0G3TMP8QK) [![Antifreeze Tester Automotive Dial Type Antifreeze Coolant Tester Hydrometer Car Battery Liquid Densitometer Coolant Anti Freeze Universal Tool for Car System Winter and Summer](https://m.media-amazon.com/images/I/41JNfLs6gRL.jpg)**Antifreeze Tester Automotive Dial Type Antifreeze Coolant Tester Hydrometer Car Battery Liquid Densitometer Coolant Anti Freeze Universal Tool for Car System Winter and Summer**Xtruck**$6.99**4.1★**▲ 414%**](https://www.amazon.com/dp/B0G5PTP44H) [![JNXIJ Coolant Tester Accessory Dial Type Antifreeze Coolant Hydrometer for Freezing Point Testing High Accuracy Car Battery Liquid Densitometer Antifreeze Tester for Ethylene Glycol](https://m.media-amazon.com/images/I/41+wkajNhKL.jpg)**JNXIJ Coolant Tester Accessory Dial Type Antifreeze Coolant Hydrometer for Freezing Point Testing High Accuracy Car Battery Liquid Densitometer Antifreeze Tester for Ethylene Glycol**JNXIJ**$4.97**3.9★**▲ 362%**](https://www.amazon.com/dp/B0FSRGYRMZ) [![TSIEBRV Dial Type Antifreeze Tester for Coolant Dual Scale (F/C) Coolant Tester Automotive for Accurate Freeze & Boil Point Testing Professional Anti Freeze Testers Automotive](https://m.media-amazon.com/images/I/41k9tRUV2UL.jpg)**TSIEBRV Dial Type Antifreeze Tester for Coolant Dual Scale (F/C) Coolant Tester Automotive for Accurate Freeze & Boil Point Testing Professional Anti Freeze Testers Automotive**TSIEBRV**$4.66**4.3★**▲ 350%**](https://www.amazon.com/dp/B0G99Q1BN5)

**~~View all trending →~~**

## **Demand & seasonality**

Weekly Amazon search volume, last 104 weeks — -37.5% search growth over the last 90 days.

9K7KSpike '24Holiday '24Spike '25Black Friday '25Spike '26 seasonSepDecMarJunAugNovMarMay

Peak months: Jan, Oct, Nov, Dec · busiest ÷ quietest = 3.5×

## **Reviews**

What buyers praise and complain about, mined from review topics.

### **What buyers love **

**Ease Of Use**26%

*“handy”*

**Advertised Vs Actual Product**14%

*“As advertised”*

**Value For Money**12%

*“Good for the price”*

**Efficiency**11%

*“Works fine very accurate”*

**Quality-Overall**7%

*“Great product and easy”*

**Coolant**5%

*“Excellent for keeping my antifreeze cavatation under control by reducing cavatation in the engine”*

**Measurement/Reading Accuracy**4%

*“had found it to be very accurate”*

**Functionality-Overall**3%

*“it now works fine”*

**Maintenance And Repair**2%

*“A practical, reliable accessory that makes maintenance easier and safer”*

**Durability**2%

*“durable enough for repeated use”*

### **What buyers complain about **

**Quality-Overall**23%

*“Cheap made”*

**Measurement/Reading Accuracy**11%

*“Tester was not even close to being accurate”*

**Color**8%

*“it did turn yellow like it was supposed to”*

**Functionality-Overall**6%

*“Doesn't seem to function as it should”*

**Instructions/User Manual/Troubleshooting**6%

*“The instructions are beyond confusing”*

**Value For Money**5%

*“It costs a little more than other kits”*

**Size-Overall**4%

*“Sample tube a bit short”*

**Ease Of Use**3%

*“making it impossible to use”*

**Rubber Quality**3%

*“rubber bulb has cracked”*

**Durability**3%

*“Broke on the first use”*

### **Top return reasons **

**Functionality-Overall**14%

**Coolant**12%

**Measurement/Reading Accuracy**11%

**Size-Overall**9%

**Advertised Vs Actual Product**7%

**Leak-Proof**7%

**Compatibility-Overall**7%

**Value For Money**6%

**Defective Material/Parts**6%

**Product Condition**3%