---
product_id: 172710805
title: "Brake Fluid Tester,Digital Brake Fluid Tester Oil Quality Check Pen W/ 5 LED Lights for DOT3 / DOT4 / DOT5"
brand: "aosiyp"
price: "A$26"
currency: AUD
in_stock: true
category: "Automotive"
url: https://www.desertcart.com.au/products/172710805-brake-fluid-tester-digital-brake-fluid-tester-oil-quality-check
store_origin: AU
region: Australia
---

# Brake Fluid Tester,Digital Brake Fluid Tester Oil Quality Check Pen W/ 5 LED Lights for DOT3 / DOT4 / DOT5

**Brand:** aosiyp
**Price:** A$26
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Brake Fluid Tester,Digital Brake Fluid Tester Oil Quality Check Pen W/ 5 LED Lights for DOT3 / DOT4 / DOT5 by aosiyp
- **How much does it cost?** A$26 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/172710805-brake-fluid-tester-digital-brake-fluid-tester-oil-quality-check)

## Best For

- aosiyp enthusiasts

## Why This Product

- Trusted aosiyp brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Description: This brake fluid tester is used to determine the moisture according to conductivity change and check the car brake oil quality, it used to test for DOT3 / DOT4 / DOT5 fluid.  Features: The main function of this brake fluid test pen is brake fluid quality determining. According to the variation of electrical conductivity to determine the moisture content of the brake fluid change. 5 LED lights display the percentage of moisture content in brake fluid, provides more accurate test result. Designed without cable connector, portable and light weight, convenient to carry and use. Suitable for professional use in automotive repair shops to test DOT3 / DOT4 / DOT5 liquid.   Specifications: Condition: 100% brand new Material: plastic, electronic components Color: black Length: approx.155mm / 6.1in Width: 18mm / 0.7in : 1.5V LR03 AAA battery (not included) LED: 5 Net Weight: approx.29g Package Weight: approx.61g  Package List: 1 * Brake Fluid Tester (Battery Not Included)   Instruction: Unscrew the brake fluid reservoir and pull off the cap of the brake fluid tester then dip the test probes into the brake fluid until up to the plastic rim of the device.  Product Label Indication: Green: Battery OK,i.e.: No water contained in the brake fluid. Yellow: Less than 1% of water content in the brake fluid. Yellow / yellow: Approx.2% of water content in brake fluid. Yellow / yellow / red: Approx.3% of water content in brake fluid. The brake fluid should be changed. Yellow / yellow / red / red: At least 4% of water content in brake fluid. The brake fluid should be changed urgently! Extreme danger!

## Features

- Brake Liquid Tester is suitable for professional use in automotive repair shops to test DOT3 / DOT4 / DOT5 liquid
- According to the variation of electrical conductivity to determine the moisture content of the brake fluid change
- 5 LED lights display the percentage of moisture content in brake fluid, provides more accurate test result
- The main function of this brake fluid test pen is brake fluid quality determining
- Brake fluid tester is designed without cable connector, portable and light weight, convenient to carry and use
- ›See more product details

## Images

![Brake Fluid Tester,Digital Brake Fluid Tester Oil Quality Check Pen W/ 5 LED Lights for DOT3 / DOT4 / DOT5 - Image 1](https://images-na.ssl-images-amazon.com/images/I/51gjXT6tJBL.jpg)
![Brake Fluid Tester,Digital Brake Fluid Tester Oil Quality Check Pen W/ 5 LED Lights for DOT3 / DOT4 / DOT5 - Image 2](https://images-na.ssl-images-amazon.com/images/I/61nV5NJIyKL.jpg)
![Brake Fluid Tester,Digital Brake Fluid Tester Oil Quality Check Pen W/ 5 LED Lights for DOT3 / DOT4 / DOT5 - Image 3](https://images-na.ssl-images-amazon.com/images/I/41ls0duDjsL.jpg)
![Brake Fluid Tester,Digital Brake Fluid Tester Oil Quality Check Pen W/ 5 LED Lights for DOT3 / DOT4 / DOT5 - Image 4](https://images-na.ssl-images-amazon.com/images/I/612w04aGScL.jpg)
![Brake Fluid Tester,Digital Brake Fluid Tester Oil Quality Check Pen W/ 5 LED Lights for DOT3 / DOT4 / DOT5 - Image 5](https://images-na.ssl-images-amazon.com/images/I/514mcF5KGCL.jpg)

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**Shop now:** [https://www.desertcart.com.au/products/172710805-brake-fluid-tester-digital-brake-fluid-tester-oil-quality-check](https://www.desertcart.com.au/products/172710805-brake-fluid-tester-digital-brake-fluid-tester-oil-quality-check)

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-22*