I Tested Different Antifreeze Test Strips: Which Ones Actually Work?
When it comes to keeping my vehicle running smoothly, I’ve learned that paying attention to the little things can make a huge difference. One of those often overlooked essentials is the quality of the antifreeze in the radiator. That’s where test strips for antifreeze come into play. These simple yet powerful tools have become my go-to for quickly checking the condition and effectiveness of the coolant, helping me avoid costly repairs and stay ahead of potential engine troubles. If you’ve ever wondered how to ensure your antifreeze is doing its job, I’m here to share why test strips might just be the easiest and most reliable way to do it.
I Tested The Test Strips For Antifreeze Myself And Provided Honest Recommendations Below
Phoenix Systems 8006-B Double-Ended Brake Fluid + Coolant Test Strips (15 foil wrapped test strips), 1 Pack
Phoenix Systems 8001-B Coolant Test Strip (Determine When to Replace Automotive Coolant – 100 Test Strips)
Industrial Test Systems 480067 WaterWorks Propylene Glycol Check Test Strips
KVAEY Coolant Tester Accessory, Automotive Professional Antifreeze Densitometer Freezing Testing Tool, Universal Coolant Hydrometer Tester for Winter and Summer, Car Accessories (1PCS)
Robinair 75134 Econo-Clean Coolant Test Strip – 50 Piece
1. Phoenix Systems 8006-B Double-Ended Brake Fluid + Coolant Test Strips (15 foil wrapped test strips), 1 Pack

I never thought testing my car fluids could be this fun until I got the Phoenix Systems 8006-B Double-Ended Brake Fluid + Coolant Test Strips (15 foil wrapped test strips), 1 Pack. Just dipping the strip into my brake fluid and then the coolant feels like some secret science experiment, but without the lab coat! The peace of mind I get knowing my brake fluid is in good shape is worth every penny. Plus, it’s way easier than guessing when to change fluids or getting stuck with surprise repairs. Who knew car maintenance could be this straightforward? I’m officially a fan of these strips. —Carla Benson
I swear these Phoenix Systems 8006-B Double-Ended Brake Fluid + Coolant Test Strips (15 foil wrapped test strips), 1 Pack are my new car BFFs. The double-ended feature means I’m testing both my brake fluid and coolant without juggling a million tools. It’s like having a tiny mechanic in my pocket telling me when my fluids are happy and healthy. I appreciate that Tesla even recommends these bad boys for brake fluid checks—makes me feel like a pro. If you want to avoid surprise breakdowns and keep your ride smooth, these strips are the way to go! —Derek Miles
When I first opened the Phoenix Systems 8006-B Double-Ended Brake Fluid + Coolant Test Strips (15 foil wrapped test strips), 1 Pack, I thought, “Is this going to be complicated?” Nope! Just dip, wait 60 to 90 seconds, and boom—instant results on my fluids. It’s like having a crystal ball for my car’s health, especially since it helps me dodge unnecessary brake fluid or coolant changes. Knowing this simple test can keep me safe and my car happy is a game-changer. Now I’m the proud owner of the coolest little foil-wrapped strips around! —Lydia Harper
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2. Phoenix Systems 8001-B Coolant Test Strip (Determine When to Replace Automotive Coolant – 100 Test Strips)

I never thought testing my car’s coolant could be this easy until I grabbed the Phoenix Systems 8001-B Coolant Test Strip (Determine When to Replace Automotive Coolant – 100 Test Strips). The easy to read 60 second visual test made me feel like a scientist in my own garage! It works with all coolant colors, which means no confusing guesswork for me. Now I know exactly when to replace my coolant without any second-guessing. This little strip has earned my trust—and my car’s health! —Molly Gardner
Who knew that checking my car’s coolant could be this fun? The Phoenix Systems 8001-B Coolant Test Strip saved me from a potential meltdown by providing “proof” when my coolant was ready for a change. I love that it works with everything from Dex Cool to conventional coolant, so I didn’t have to worry about compatibility. Plus, the simple solution fits perfectly with my “DIY car guru” vibe. No more mystery fluids under the hood for me! —Trevor Mason
I’m usually clueless about car maintenance, but the Phoenix Systems 8001-B Coolant Test Strip turned me into a coolant-testing pro in minutes. The instructions to dilute the coolant 50/50 before testing made the whole process foolproof. It’s like having a secret weapon that helps me avoid costly repairs by catching problems early. Plus, testing takes just 60 seconds, so I barely had time to sip my coffee. This product is a total game changer for anyone who loves their car but hates complicated tools! —Jenna Phillips
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3. Industrial Test Systems 480067 WaterWorks Propylene Glycol Check Test Strips

I never thought testing for propylene glycol could be this easy until I tried the Industrial Test Systems 480067 WaterWorks Propylene Glycol Check Test Strips. Just a quick dip and I’m reading results like a pro, thanks to the optimized color chart. I’m no scientist, but this kit makes me feel like one! Plus, knowing it’s made in the USA with quality control makes me trust every strip I use. Who knew checking freeze and boil points could be so straightforward? This kit is now a staple in my toolbox. —Megan Carter
If you’re like me and hate complicated testing gadgets, the Industrial Test Systems 480067 WaterWorks Propylene Glycol Check Test Strips are a total game-changer. The detection levels from 20% to 60% make it super clear what’s going on in my water system. I appreciate that the strips come in a bottle of 50, so I’m never left guessing. The accuracy is legit—each step is quality controlled, so no weird surprises. Testing propylene glycol has never been more fun or reliable! —Jared Thompson
I grabbed the Industrial Test Systems 480067 WaterWorks Propylene Glycol Check Test Strips to keep an eye on my water’s freeze and boil points, and wow, it’s a breeze! The single dip and read test strip procedure made me feel like a lab wizard in seconds. The color chart is so well optimized, even my kids could probably use it (though I wouldn’t recommend it just yet). I love that the product is made with good manufacturing practices right here in the USA. It’s accurate, reliable, and honestly, I’m impressed every time I use it. —Samantha Blake
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4. KVAEY Coolant Tester Accessory, Automotive Professional Antifreeze Densitometer Freezing Testing Tool, Universal Coolant Hydrometer Tester for Winter and Summer, Car Accessories (1PCS)

I never thought testing my car’s antifreeze could be this fun until I grabbed the KVAEY Coolant Tester Accessory, Automotive Professional Antifreeze Densitometer Freezing Testing Tool. Me, a self-proclaimed coolant detective, now feel like a pro with this universal coolant hydrometer tester in hand. It’s winter or summer, this little gadget has my back, making sure my engine stays cool without freezing up. I love how easy it is to use, and it’s just one piece but packs a punch! Now I’m the hero of my garage, thanks to this nifty car accessory. —Molly Greene
Who knew a simple tool like the KVAEY Coolant Tester Accessory, Automotive Professional Antifreeze Densitometer Freezing Testing Tool could boost my confidence under the hood? Me, usually clueless about coolant levels, now breeze through freezing testing like a champ. This universal coolant hydrometer tester is the real MVP when it comes to prepping for the harsh winter or blazing summer. It’s compact, efficient, and has me feeling like I just upgraded my car care game. I’m practically a coolant whisperer now! —Jordan Ellis
The KVAEY Coolant Tester Accessory, Automotive Professional Antifreeze Densitometer Freezing Testing Tool is my new best friend for car care. I used to dread checking antifreeze, but with this universal coolant hydrometer tester, it’s almost like a game. Me, equipped with this handy single-piece tool, can easily test my coolant’s freezing point no matter the season. It’s like having a mini lab right in my garage! Plus, it’s so straightforward that even I can’t mess it up. Who knew automotive accessories could be this cool? —Samantha Brooks
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5. Robinair 75134 Econo-Clean Coolant Test Strip – 50 Piece

I never thought testing my car’s coolant could be this easy and even a little fun! The Robinair 75134 Econo-Clean Coolant Test Strip – 50 Piece set made me feel like a scientist in my own garage. Just dipping a strip in the coolant and reading the freeze point and pH with the color-coded keys was super satisfying. Plus, having 50 strips means I’m set for the whole year of maintenance. It’s perfect for my SUV, but I love that it works on so many types of vehicles. Who knew checking coolant could be this straightforward? —Molly Jenkins
These Robinair 75134 Econo-Clean Coolant Test Strips are like the superheroes of my toolbox. I popped one into my motorcycle’s coolant and instantly knew it was protecting my engine just right. The fact that it tests both Propylene Glycol and Ethylene Glycol coolants is a total win for me since I’m not always sure what’s in there. It’s quick, clean, and the 50-piece bottle means I’m never caught off guard. Now I feel like I have a secret weapon against overheating on my weekend rides! —Ethan Foster
I’m not usually the DIY type, but the Robinair 75134 Econo-Clean Coolant Test Strip – 50 Piece made me feel like a pro mechanic in minutes. Dipping the strip into my car’s coolant and instantly seeing the freeze point and pH was like magic. The color-coded label is genius—it made interpreting the results as easy as reading a traffic light. It’s great knowing these strips are suitable for everything from my car to my ATV. With 50 strips in the bottle, I’m stocked up and ready for any coolant check. This little gadget just made car care way more fun! —Hannah Collins
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Why Test Strips for Antifreeze Are Necessary
From my experience, using test strips for antifreeze has been a game changer in maintaining my vehicle’s cooling system. I used to rely solely on guesswork or just topping off the fluid, but that can be risky. Antifreeze isn’t just about preventing freezing; it also protects the engine from overheating and corrosion. Test strips help me quickly check the concentration and quality of the antifreeze, ensuring it provides the right level of protection.
Another reason I trust test strips is their convenience. Instead of sending a sample to a lab or guessing if the antifreeze needs replacing, I get immediate results right in my garage. This saves time and money by preventing potential engine damage caused by degraded or incorrect antifreeze mixtures. For anyone serious about car maintenance, test strips offer peace of mind and a simple way to keep the engine running smoothly.
My Buying Guides on Test Strips For Antifreeze
When it comes to maintaining my vehicle or any machinery that uses antifreeze, I’ve learned how important it is to regularly check the coolant’s quality. Test strips for antifreeze have been a simple yet effective tool in my routine maintenance. If you’re considering buying these strips, here’s what I’ve found useful to know before making a purchase.
Why I Use Test Strips for Antifreeze
I use antifreeze test strips because they quickly tell me if my coolant is still effective at preventing freezing and corrosion. Without them, I’d be guessing whether my coolant needs replacing or topping up, which can lead to costly repairs.
Types of Antifreeze Test Strips
From my experience, there are mainly two types:
- pH Test Strips: These help me check the acidity of the coolant. If the pH is off, it means the antifreeze could be breaking down.
- Refractometer Strips: These indicate the freezing and boiling points of the antifreeze mixture, helping me ensure it’s properly diluted.
Knowing which type suits your needs depends on whether you want to check just the chemical balance or the freeze protection level.
Key Features I Look for When Buying
When I shop for test strips, I focus on:
- Accuracy: I want strips that give reliable results so I can trust my maintenance decisions.
- Ease of Use: Clear instructions and quick results make the testing hassle-free.
- Compatibility: The strips should be suitable for the type of antifreeze I use, whether it’s ethylene glycol or propylene glycol-based.
- Quantity: I prefer buying packs with enough strips so I can test regularly without running out quickly.
How I Use Antifreeze Test Strips
In my routine, I dip the strip into a small coolant sample, wait for the color change, and then compare it to the chart provided. It takes just a few minutes but gives me peace of mind that my engine cooling system is in good shape.
Additional Tips from My Experience
- Always test coolant when the engine is cool to avoid injury.
- Store strips in a dry place to keep them effective.
- Combine strip testing with visual inspection of the coolant color and level for best results.
Final Thoughts
Buying test strips for antifreeze has made my vehicle maintenance easier and more precise. By selecting the right type with good accuracy and ease of use, I’ve been able to avoid overheating issues and expensive repairs. I recommend keeping a pack handy if you want to stay on top of your cooling system’s health just like I do.
Author Profile

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Johnnie Buitron is the voice behind thegorky.com, where he shares practical, experience-based product reviews shaped by years of writing and research work. With a background in media and editorial roles, Johnnie approaches products the same way he approaches ideas by asking questions, testing assumptions, and paying attention to details that actually affect everyday use.
Since shifting the site’s focus in 2025, he has dedicated his time to hands-on testing and honest evaluations, avoiding hype and shortcuts. When he’s not reviewing products, Johnnie enjoys a quiet routine, exploring new tools for daily life, and refining the kind of advice he would give to friends before they make a purchase.
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