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- AS502 BRAKE FLUID TESTER is used to detect the water content of the brake fluid, to prevent the boling point of the brake fluld from beling lowered due to excessive water content, the braking force is reduced,and to avold traffic accidents!
- Why do we choose AS502 Brake Fluid Tester?
- Brake pressure was transmitted by brake fluid, the pressure transmission will out of function once brake fluid including too much water. In order to safe-driving, we must test water ratio scale in brake fluid regularly. The brake fluid tester help us do current maintenance, make sure we drive in safety condition.
- Multi-Function:
- Highly Sensitive Probe
- Boost Detection System
- Multiple Brake Fluid Compatibility
- High Definition Backlit Display
- User-Friendly Design
- Easy Instant Read and Alarm
BOOST DETECTIONSYSTEM
- Innovative boost quickdetection technologyensures stable performanceand more accuratemeasurement results.
MULTIPLE BRAKE FLUID COMPATIBILITY
- The device offers two detection modes to choose from. The normamode is suitable for DOT-3, DOT-4, DOT-5.1 types of brake fluid, while theexpert mode is suitable for various brands of brake fluid, providingmore accurate detection results.
- Normal Mode: D0T3, D0T4, D0T5.1
- Expert Mode:
- For MOTUL DOT4
- For ATE DOT4
- For FERODO DOT4
- For MOBIL DOT4
- For BREMBO DOT4
- For TRW DOT4
- For BOSCH DOT4
- For CASTROL DOT4
- For TOTAL DOT4
- For VALEO DOT4
- For FUCHS DOT4
- For TEXTAR DOT4
OPERATING STEPS
- STEP 1: Wipe the test probe clean.
- STEP 2: Open the brake fluid reservoir cap.
- STEP 3: Select the type of brake fluid to be tested.
- STEP 4: lmmerse the test probe into the brake fluid.
- STEP 5: Press thebutton to start the test.
- STEP 6: The measuremer result will be displayed on the screen.
HIGHLY SENSITIVE PROB
- AS502 Brake Fluid Tester Equipped with a highly sensitive sensor and a 260mm coiled hose, this deviceprovides a convenient and fast user experience.The outer laver of the hose is made of 304 stainless steel, which has thecharacteristics of oil resistance, oxidation resistance, and corrosion resistance.effectively extending the product's service life.
USER-FRIENDLY DESIGN
- AS502 Automotive Brake System Tools handheld part of the device is lined with siliconeproviding a comfortable grip and a lightweight design,making it easy to operate with one hand.
HIGH-DEFINITION BACKLIT DISPLAY
- Car Brake Diagnostic Testing Tool has 2.8-inch LCD screen with a backlit design provides userswith a clearer display, regardless of strong light or dark night making your work more efficient and effortless.
MJ
2025-06-23 12:08:53
This tester tests for water content in brake fluids. And while water content can lower the boiling point of braking fluids, it may not tell you anything about the corrosion levels happening inside the brake system. So while your fluid may pass a moisture test, it could easily have particles of copper in it which indicate corrosion is taking place. This tester doesn't measure for that.Using this to test my 3 vehicles, all 3 levels of water content were different from each other - 2.8%, 2.0%, and 1.8% is what it measured. I have no way of proving these numbers correct or not. With the results it gave, I have a fair amount of trust that they represent an close measurement of the water contents in these 3 vehicles. So it seems to accomplish what it's designed to do. For this reason alone, I give it the 5 stars.However, knowing that it doesn't give the true indication of brake fluid contamination (of copper ion levels), I do question whether the results it gives could lead to a false sense of security about a vehicles' brake fluid health. If a person simply had their brake fluid changed every 2/3 years, there'd never be a need to test or worry about the condition of it. Of course all this testing and worry disappear, if you never use your brakes very much. It's typically when brakes are used a good amount on a hot day, is when the need for new fluid can become squishily obvious.
Paulster2
2025-04-29 12:56:56
I'm not overly impressed with the device, mainly from a user standpoint. The user interface is very clunky. Much as others have stated, if you overshoot your targeted page, you have to cycle fully through all of the pages again until you get back to the one you want. Expert mode is not all that expert. Overall, it's okay, but nothing to write home about.
Gary Ryan
2024-12-12 13:54:33
This product arrived in a plastic clamshell for protection from damage, included are instructions written in both English and Chinese. This product is capable of testing the water content up to a max of 4% this percentage does not seem to increase or decrease switching between DOT3/DOT4/DOT5.1Brake fluid is recommended to be completely replaced every 12-24 months as it inhibits the ability to absorb humidity from the air, and make your braking experience quite weak. This test meter is an aide in telling you when the fluid is near it's limit. It is recommended to purchase a new unopened bottle every time you replace the fluid and not use an unsealed one sitting on the shelf. New bottles of brake fluid are suppose to have an expiration date or made on dates, as water vapor can be absorbed through it's plastic container.The best scientific data I can find indicates that the difference between each DOT rating is it's viscosity 3 being thicker 4 and 5.1 being increasingly runnier in consistency and quicker at providing compression, the end result being the more thinner the fluid the faster it absorbs water. 5.1 is mainly a race track fluid and typically gets changed daily due to this fluids rate of water absorption. On average DOT3 brake fluid is expected to absorb 1.5% of it's content as water on an annual bases in an unsealed container. Each of these fluid are made from polyethylene glycol, not to be confused with DOT5 which is incompatible with each of the three and is made from silicone.This product offer the ability to switch between DOT3, DOT4, and DOT5.1 for testing in addition to a list of vendor specific DOT4 fluids for better analysis. Each of these tests seem to cap out at 4%, I'm not sure the science on how this device particularly filters out the differences between each vendor. I tested this product on the two vehicles we own and a old bottle of fluid in the shed, all maxed out at 4%+ but also have not had fluid exchanges done on them in any recent time and are all respectively old. I did perform tests on open air, snow, and power steering fluid which came back 0%, and a bowl of water pinging at 4%+, indicating that it is capable of reading both ends of the spectrum.The only drawback being is that it would be nice to see how much water is actually present other than the 4% limit, giving an indication of possibly how long a fluid had been sitting, otherwise seems to be a great product.Product Dimensions. (Meter) 7" Long x 3" Wide x 1.25" Depth. (Probe) 10.75" Long x 12.5mm in Diameter.
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