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Aicevoos Brake Fluid Tester Pen For DOT3-DOT5.1

Aicevoos Brake Fluid Tester Pen For DOT3-DOT5.1
Aicevoos Brake Fluid Tester Pen For DOT3-DOT5.1

Aicevoos Brake Fluid Tester Pen For DOT3-DOT5.1 Price comparison

Aicevoos NC Brake Fluid Tester Pen Brake Fluid Test Strips, Calibrated for DOT3 DOT4 DOT-5.1 Brake Fluid
Aicevoos NC Brake Fluid Tester Pen Brake Fluid Test Strips, Calibrated for DOT3 DOT4 DOT-5.1 Brake Fluid
$9.99
Amazon.com
Updated: September 17, 2026 17:10
  • All prices mentioned above are in United States dollar.
  • This product is available at Walmart.com, Amazon.com, MegaZip, SHEIN, FinditParts.
  • At walmart.com you can purchase KINGBOLEN Cars Brake Fluid Tester Pen for DOT3 DOT4 DOT5, Automotive Brake Oil Moisture Analyzer Vehicle Diagnostic Tool for only $5.99 , which is 90% less than the cost in FinditParts ($60.99).
  • The lowest price of Otc Tools & Equipment 4598-DOT3 - Brake Fluid Tester Dot 3 was obtained on October 30, 2026 18:16.

Aicevoos Brake Fluid Tester Pen For DOT3-DOT5.1 Price History

Highest Price
$30.00 Walmart.com
June 9, 2026
Lowest Price
$4.13 Walmart.com
May 11, 2026
Current Price
$5.99 Walmart.com
October 30, 2026
Since May 6, 2026
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Aicevoos Brake Fluid Tester Pen For DOT3-DOT5.1 Description

Aicevoos Brake Fluid Tester Pen For DOT3-DOT5.1 – Your Ultimate Tool for Brake Safety

Are you searching for a reliable way to ensure your vehicle’s brake fluid is in good condition? Look no further than the Aicevoos Brake Fluid Tester Pen for DOT3-DOT5.1. This essential tool helps you easily assess the moisture content in your brake fluid, ensuring safe driving at all times. With its user-friendly design and accuracy, you can now make informed decisions about your vehicle’s brake maintenance.

Key Features of the Aicevoos Brake Fluid Tester Pen

  • Comprehensive Testing for Various Brake Fluids: This tester is compatible with DOT3, DOT4, and DOT5.1 brake fluids. It effectively measures moisture levels to determine if the fluid is suitable for safe driving.
  • Lightweight & Portable Design: Weighing just 5.3 ounces, the tester is easy to carry. Its compact size (9.33 x 3.9 x 1.46 inches) allows for convenient storage in your glove compartment or tool kit.
  • Easy-to-Read Display: The Aicevoos Brake Fluid Tester features a clear LCD screen that provides quick and precise readings of moisture content, ensuring you can assess your brake fluid quickly.
  • Long Battery Life: Powered by two AAA batteries (included), this tester is designed for longevity and reliability during your checks.
  • User-Friendly Operation: Just insert the probe into your brake fluid, press the power button, and receive instant results. This simplicity makes it perfect for both seasoned mechanics and novice drivers alike.

How Does the Aicevoos Brake Fluid Tester Compare Prices?

Price comparison is essential for every consumer, and the Aicevoos Brake Fluid Tester Pen stands out in terms of affordability and value. Across various suppliers, you’ll find competitive pricing, making it an accessible tool for ensuring your vehicle’s safety.

Notable Trends from the 6-Month Price History

The price history of the Aicevoos Brake Fluid Tester shows a slight decrease over the past six months, making it a cost-effective investment for your vehicle maintenance needs. Several retailers have adjusted their pricing, making it an excellent time to purchase this vital tool.

Customer Reviews Summary

Customers have expressed high satisfaction with the Aicevoos Brake Fluid Tester. The most cited positive aspect is its reliability and ease of use. Users love how quickly they can check their brake fluid’s condition. Many reviews highlight that the tester is compact and fits easily into their toolkits.

However, some users noted occasional issues with the accuracy of readings, particularly in very old brake fluid. These drawbacks are relatively minor compared to the overall positive feedback.

Explore Unboxing and Review Videos

Interested in seeing the Aicevoos Brake Fluid Tester Pen in action? Check out various unboxing and review videos available on YouTube. These visual demonstrations provide insight into the product’s features and usability, giving you confidence in your purchasing decision.

Final Thoughts on the Aicevoos Brake Fluid Tester Pen

With its practical features, user-friendly operation, and reliable performance, the Aicevoos Brake Fluid Tester Pen for DOT3-DOT5.1 is a must-have for every vehicle owner. By regularly checking your brake fluid’s moisture content, you can ensure safer driving conditions and extend the life of your braking system.

Don’t compromise your safety on the road. With competitive prices and reliable performance, now is the perfect time to add the Aicevoos Brake Fluid Tester to your maintenance toolkit.

Compare prices now!

Aicevoos Brake Fluid Tester Pen For DOT3-DOT5.1 Specification

Specification: Aicevoos Brake Fluid Tester Pen For DOT3-DOT5.1

Brand

โ€ŽAicevoos

Item Weight

โ€Ž5.3 ounces

Package Dimensions

โ€Ž9.33 x 3.9 x 1.46 inches

Batteries

2 AAA batteries required. (included)

Aicevoos Brake Fluid Tester Pen For DOT3-DOT5.1 Reviews (13)

13 reviews for Aicevoos Brake Fluid Tester Pen For DOT3-DOT5.1

4.9 out of 5
★★★★★
★★★★★
11
★★★★★
2
★★★★★
0
★★★★★
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  1. ★★★★★

    Fernando Aguilar –

    Gerรคt funktioniert bisher einwandfrei. Der biegsame Hals ist sehr praktisch, wenn der Bremsflรผssigkeitsbehรคlter wie in meinem Fall etwas unzugรคnglich verbaut ist.
    Fรผr “Langzeittests” besitze ich das Gerรคt noch nicht lange genug

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  2. ★★★★★

    Fernando Aguilar –

    The media could not be loaded.

    Muy sencillo de usar, con pantalla en la que se indica el % de humedad que tiene el lรญquido de frenos, para mayor facilidad de lectura, la retroiluminaciรณn de la pantalla cambia de color:
    Verde de 0 al 2%, lรญquido de frenos en perfecto estado.
    Amarillo 2 al 35 (suena el zumbador lentamente), lรญquido de frenos con exceso de humedad, precisa sustituciรณn.
    Rojo mas del 3%, (suena el zumbador rรกpidamente), lรญquido que precisa sustituciรณn inmediata.
    Dispone de dos botones, el de encendido y apagado, y el que esta marcado con una โ€œSโ€, que permite seleccionar el tipo de lรญquido de frenos que usa el vehรญculo que estamos probando, DOT-3, DOT-4 o DOT-5.1, este mismo botรณn, si lo mantenemos pulsado tres segundos, memoriza la lectura para que podamos leerla fรกcilmente, cuando hayamos sacado la sonda del deposito del liquido.
    Dos precauciones fundamentales que tenemos que tener a la hora de comprobar el liquido de frenos:
    1ยบ Limpiar la sonda despuรฉs de sacarla del depรณsito con un papel, ya que el liquido de frenos es muy corrosivo para la pintura de la carrocerรญa.
    2ยบ Poner el tapรณn del depรณsito (y cualquier herramienta, llaves o utensilios) en un lugar alejado de compartimento del motor, como se ve al final del video, yo de di con la punta de la sonda al tapรณn, de forma que se cayรณ dentro, y como en los coches modernos, la parte inferior del vano de motor estรก totalmente cubierta, el dichoso tapรณn se quedo en el cubre bajos, de forma que lo que en principio era una operaciรณn de un par de minutos, me llevo mas de dos horas, con uso de endoscopio y todo โ€œhttps://www.amazon.es/gp/product/B0CQYVZKJZโ€, para localizar la tapa, tuve que desmontar de la rueda delantera del conductor y, por fin, recuperar la tapita, lo bueno, que me ha servido de lecciรณn.
    Por cierto, la lectura que me dio oscilo entre 1 y 1,2%
    Incluye las dos pilas AAA necesarias para su funcionamiento y manual en castellano,

    Como informaciรณn adicional:
    Los lรญquidos de frenos son un lรญquido hidrรกulico que ayuda a transmitir la fuerza ejercida en el pedal de freno hacia la pinza con el fin de que las pastillas rocen con el disco, el lรญquido es incompresible, es decir, no se comprime con la fuerza, y por tanto, es eficaz para transmitir la fuerza a travรฉs del sistema de frenos.
    Los lรญquidos de freno tambiรฉn son un fluido higroscรณpico, lo que significa que absorben la humedad del ambiente por lo que con el tiempo las partรญculas de agua aumentan y el lรญquido se deteriora.
    Esto puede provocar que parte del sistema de frenado se oxide, pero sobretodo hace que la eficacia de frenado disminuya, ya que al aumentar la cantidad de agua en el fluido, el lรญquido hierve a menor temperatura, produciรฉndose entonces burbujas, que lo vuelven esponjoso y se comprime fรกcilmente, de esta manera, ya no es capaz de transmitir la fuerza por el sistema de frenado y por mรกs que pisemos el pedal de freno, este no funcionarรก.
    Por ejemplo, el DOT 4 que es el lรญquido de frenos que normalmente integran los coches con sistema de ABS, cuando el lรญquido estรก libre de humedad (estรก seco), su punto de ebulliciรณn es de 230 ยบC en cambio. el punto de ebulliciรณn hรบmedo es de 155 ยบC y su viscosidad es de 1800 cSt.

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  3. ★★★★★

    GJZ –

    Brake fluid is hygroscopic, it absorbs moisture from the air. That is bad, the moisture can lead to corrosion of expensive braking components and potentially brake failure…not a good thing.

    This device simply measures the moisture content of your brake fluid. Just dip the sensors in your fluid and wait for the results. Green- 0-2%, you’re good. Yellow-2-3%, start buying brake fluid. Red-3+% change it.

    If your car is under warranty, absolutely follow the manufacturer’s specifications as to flushing your brake fluid. If this tester indicates you should change your brake fluid before then, by all means do it. After your warranty has expired, however, only change your brake fluid when you need to, not when the mechanic doing a “safety check” of your vehicle says.

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  4. ★★★★★

    Joachim P. –

    Facendo gran parte delle manutenzioni delle auto di famiglia da solo ed essendo un grande appassionato di motori, ci tengo che gli impianti frenanti delle auto siano sempre a punto. Grazie a questo strumento mi sono assicurato che le macchine avessero i loro fluidi allo stato ottimale, mentre ho scoperto che una di esse aveva urgente bisogno di una sostituzione del liquido freni. Grazie alla precisa misurazione, che mostra un parametro variabile da 0.0% a 4.0% con una risoluzione di 0.1 punti percentuale, รจ possibile conoscere in modo affidabile il vero stato del liquido. Il valore rappresenta la quantitร  di umiditร  presente nel fluido, che per sua natura รจ igroscopico e tende ad assorbire l’umiditร  nell’aria. Quando questo valore supera il 3%, si rende necessaria l’immediata sostituzione, per evitare che in caso di necessitร  il fluido non possa permettere una frenata ottimale. La sonda flessibile consente di arrivare a fondo della vaschetta agilmente e senza sforzo, anche nei vani motore piรน scomodi.
    Consigliato. Il prezzo รจ adeguato. In confezione incluse anche le batterie AAA per utilizzarlo immediatamente.

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  5. ★★★★★

    Ronster –

    I tested it on an old brake fluid oil. It quickly gave me a reading. I like the flexible probe. Ideally I should compare it with a different tester to make sure the ready is truly accurate.

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  6. ★★★★★

    Amazon Customer –

    so far so good. it works I’m happy with it. it tells u if your brake pad is good or worn out.

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  7. ★★★★★

    Paco –

    Ce testeur est trรจs bien fait, bonne qualitรฉ de fabrication, le fait d’avoir les รฉlectrodes de mesure bien sรฉparรฉes de l’appareil est trรจs pratique pour les plonger dans le vase d’expansion de liquide de frein (quand c’est possible).
    Mesure bien lisible, on sรฉlectionne le type de liquide, dot 4, 5.1… Et on obtient le pourcentage d’humiditรฉ dans son liquide. C’est vraiment un plus d’avoir cet outil, car la pรฉriodicitรฉ de changement de liquide de frein est parfois arbitraire, on prรฉconise 2 ans, mais par exemple au bout de 2 ans je n’ai qu’un pourcent d’humiditรฉ, ce qui est encore tout ร  fait acceptable.
    Bon appareil que vous recommande.

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  8. ★★★★★

    Jared –

    Works well. It has a flexible head to reach into awkward reservoirs. Everyone drives differently and vehicles are exposed to different types of climates, so it makes more sense to actually test the fluid vs going by a generic mileage change. Seems to have accurate readings. I’ve tested it on several vehicles with different results that appear to be accurate.
    It functions as advertised and can save you some money vs unnecessarily changing fluid that doesn’t need to be changed.

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  9. ★★★★★

    Carlos –

    It seems to work, will have to compare between old and new fluid to see how accurate it is.

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  10. ★★★★★

    Trusty Dusty –

    Routine maintenance is a funny thing. Your driving in your climate vastly could differ from my driving in a different climate. Out west where it is very dry, and you spend your driving mostly on vast open stretches of road? You probably won’t burn up the fluid from hard stops, heat build-up, contaminated and humid air.

    But you live in a humid place and drive in the city? Your fluid is going to need to be changed a lot sooner.

    Bleeding brakes isn’t fun. You usually need two people, and sometimes some expensive tools. To bleed ABS, you often need a professional level scan tool. What I’m getting at here, is, it’s not cheap to do. Places that do it for you know that and are glad to charge you a lot for it. If you happen to have a vehicle with a brake fluid warning, and it is a type where the warning is done simply by miles or time, then there is a decent chance the fluid may be past its prime, or possibly completely fine.

    Use this and save yourself some money. Perhaps at every oil change, or once a month, pop off your fluid fill cap and test it real quick. If the fluid is getting worn out, replace. If not, let it ride.

    Cheap tool, saves you potentially thousands in costs associated with either running overly hydrated fluid rusting out lines, or wasted money changing perfectly good fluid.

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  11. ★★★★★

    L. B. –

    I was looking for a way to check brake fluid without using up my Phoenix Systems test strips prematurely. Even though they test for two different things (the pen tester checks moisture levels and the strips check for copper levels), I was hoping that the results would show around the same scale range for each of their respective tests (ie, change soon, change now, etc…).

    I tested the brake fluid with this pen tester and the results were 2.5% (3%+ is change now). I then tested the fluid with the Phoenix test strips and the results read 100 (200+ is change now). To me, that correlates pretty well to each other. So now when I test fluid, I can pull out the tester and check the results before wasting my test strips. If the reading is 2.5% or below, there’s no need to waste a test strip. If the readings is higher, then I can test with a strip to confirm it’s time to change the fluid.

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  12. ★★★★★

    zoomJLzoom –

    I too question the accuracy of this pen device, but also don’t have one that’s calibrated to compare it to. It does however give me a number to put on things, to give fluid a relative measurement to other vehicles I own.

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  13. ★★★★★

    Brad B. –

    I own two older vehicles and have never changed the brake fluid in either one. I ordered this brake fluid tester to check whether or not the fluid should be changed. Surprisingly, the brake fluid in each vehicle read low levels of moisture (indicating that I do not need to change the fluid in either vehicle). I put water in a container and tested the meter. The meter read extremely high levels of moisture in the water cup. I am unable to tell how accurate the brake fluid moisture reading was, but I do know that it does water moisture levels.

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