AUTOOL AS505 Exchanger Transmission Oil Tester with Display

(16 customer reviews)

US$49.00

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AUTOOL AS505

Product Overview

The AUTOOL AS505 is a handheld transmission fluid tester for gasoline and diesel vehicle transmission service checks. It uses optical probe technology and a 2.8-inch backlit LCD to help assess transmission fluid transmittance, oil temperature, possible contamination, deposits, and service condition before maintenance decisions.

Optical Probe Transmission Fluid Oil Temp Display 2.8-inch LCD
6V4 × 1.5V Batteries
80cmTeflon Probe
10sResponse
3 YearsMain Unit Warranty
AUTOOL AS505 transmission fluid tester main product image showing optical probe transmittance display oil temperature display handheld design and 2.8-inch backlit screen Click to enlarge
AUTOOL AS505 transmission fluid tester 3-year warranty image Click to enlarge
Before You Order And Use

Before You Order And Use

Use AS505 as a transmission fluid transmittance and temperature tester. Clean the probe, check the vehicle condition, and read the result indicators carefully before judging whether transmission fluid service may be needed.

Transmission Fluid Testing

AS505 is mainly used to test automotive transmission fluid transmittance and oil temperature. Reduced transmittance may be related to impurities, deposits, or metal contamination in the fluid.

Suggested Test Interval

It is recommended to check transmission fluid condition every 5,000-10,000 km, especially before deciding whether transmission fluid service is needed.

Clean The Probe First

Wipe the test probe clean before each measurement. Residual oil, dirt, or contamination on the probe may affect the reading.

Engine Below 60°C

Before testing, make sure the engine temperature is below 60°C. This helps keep the measurement process within the recommended operating condition.

6V Battery Power

The tester uses 4 × 1.5V AAA batteries for a 6V operating voltage. Install batteries with the correct polarity before powering on.

Auto Power-Off

The tester automatically powers off after about 5 minutes of no activity. Long press the power key to turn the tester on or off manually.

Measurement Reminder

  • AS505 helps judge transmission fluid condition through transmittance and temperature; it does not replace full transmission diagnosis.
  • If the result indicates warning or replacement, combine the reading with vehicle mileage, service history, driving symptoms, and workshop inspection.
  • Do not use AS505 as a brake fluid, engine oil, boiling point, or power steering fluid tester. Choose the matching AUTOOL AS model for those fluids.
Product Comparison

Product Comparison

AS505 belongs to the AUTOOL automotive oil and fluid analyzer series. Compare the test object, detection technology, screen, temperature range, test cable length, and power supply before choosing the correct model.

AS501 / AS502Brake fluid testers for water content. AS501 uses a 1.8-inch display and 3V power; AS502 uses a 2.8-inch display and 6V power.
AS503Engine oil quality tester for gasoline and diesel engine oil transmittance, using optical probe technology, 80cm test cable, and 10s response.
AS505Transmission fluid tester for automotive transmission fluid transmittance, with optical probe technology, 2.8-inch backlit display, °C/°F switching, 6V power, and 80cm Teflon hose.
AS506Brake fluid boiling point tester using flash point heating technology, 12V power, 4cm test cable, and 16s response.
AS507Power steering fluid tester for automotive steering fluid transmittance, using optical probe technology, 80cm test cable, and 10s response.
AUTOOL automotive oil and fluid analyzer comparison chart for AS501 AS502 AS503 AS505 AS506 and AS507 Click to enlarge
Key Features

Key Features

AS505 combines an optical probe, 800mm Teflon hose, oil temperature reading, LCD display, result indicators, and handheld design for practical transmission fluid condition checks.

High-Precision Optical Probe

The integrated photoelectric transceiver sensor probe helps provide stable measurement feedback when checking transmission fluid transmittance.

800mm Flexible Hose Probe

The 800mm Teflon hose probe offers flexible access during testing and is resistant to oil, oxidation, and corrosion for longer service life.

Oil Temperature Display

The built-in temperature sensor displays the current transmission fluid temperature and supports °C / °F unit switching.

2.8-inch Backlit LCD

The high-definition backlit LCD makes readings easier to view in daylight, dim workshop areas, or nighttime conditions.

Clear Result Indicators

The screen shows transmittance, analog bar graph, OK, warning, and suggested replacement indicators to help users interpret the result quickly.

Comfortable Handheld Design

The silicone-lined handheld portion provides a comfortable grip, while the lightweight body supports easy single-handed operation.

Specifications

AS505 Product Specifications And Controls

The AS505 uses optical probe technology, a 6V battery power supply, an 80cm Teflon test cable, and a 2.8-inch display for automotive transmission fluid transmittance and temperature checks.

Core Specifications
ProductAUTOOL AS505 Transmission Fluid Tester
Testing ObjectAutomotive transmission fluid / ATF
Operating PrincipleTransmission fluid transmittance
Detection TechnologyOptical probe technology
Display Screen2.8-inch backlit LCD
Temperature Unit°C / °F switchable
Temperature Measurement Range0-85°C / 0-185°F
Operating Temperature-10°C-60°C
Operating Voltage6V, 4 × 1.5V batteries
Test Cable Length80cm
Test Duration10s response
Hose MaterialTeflon / PTFE
Product Dimensions175 × 72 × 29mm / 6.9 × 2.8 × 1.1in
Buttons And Structure
AProbe tip
BDisplay
CPress to toggle temperature units
DPress to turn on / off the backlight
EPress to test
FLong press to turn on / off the tester
GBattery cover
AUTOOL AS505 specifications image showing 6V operating voltage operating temperature product dimensions and button functions Click to enlarge
Core Specifications
ProductAUTOOL AS505 Transmission Fluid Tester
Testing ObjectAutomotive transmission fluid / ATF
Operating PrincipleTransmission fluid transmittance
Detection TechnologyOptical probe technology
Display Screen2.8-inch backlit LCD
Temperature Unit°C / °F switchable
Temperature Measurement Range0-85°C / 0-185°F
Operating Temperature-10°C-60°C
Operating Voltage6V, 4 × 1.5V batteries
Test Cable Length80cm
Test Duration10s response
Hose MaterialTeflon / PTFE
Product Dimensions175 × 72 × 29mm / 6.9 × 2.8 × 1.1in
Buttons And Structure
AProbe tip
BDisplay
CPress to toggle temperature units
DPress to turn on / off the backlight
EPress to test
FLong press to turn on / off the tester
GBattery cover
How To Use

How To Use

Clean the probe, confirm the engine temperature is below 60°C, insert the probe into transmission fluid, press the test key, and read the transmittance and temperature result on the display.

Install Batteries And Power On

Open the rear battery cover, install 4 × 1.5V AAA batteries with correct polarity, then long press the power key for more than 2 seconds.

Wipe The Probe Clean

Before each measurement, wipe the probe tip clean so old oil or dirt does not affect the transmittance reading.

Check Temperature Condition

Make sure the engine temperature is below 60°C. Press the temperature key if you need to switch between °C and °F.

Submerge The Probe

Place the testing probe into the transmission fluid. Keep the probe properly immersed during measurement.

Press Test And Read Result

Press the test button. The interface displays the transmission fluid transmittance and current fluid temperature.

AUTOOL AS505 operating steps showing clean the probe submerge the probe press the test button and read the result Click to enlarge

Use Notes

  • The tester displays OK when transmittance is between 100% and 50%.
  • The warning indicator appears when transmittance is between 50% and 30%.
  • The suggested replacement indicator appears when transmittance is below 30%.
  • After measurement, long press the power key for about 2 seconds to shut down the tester.
  • The tester automatically powers off after 5 minutes without operation.
AUTOOL AS505 display details showing battery level backlight sound OK warning replacement transmittance and transmission fluid temperature Click to enlarge
Measurement And Reading Guide

Measurement And Reading Guide

The AS505 screen displays transmittance, fluid temperature, battery status, backlight status, sound indicator, and result icons. Use the result as a service reference together with vehicle condition and maintenance history.

OKTransmittance is good. The measured transmission fluid condition is within the good display range.
WarningTransmittance warning. Check the fluid condition and consider vehicle symptoms, mileage, and maintenance history.
Suggested To ReplaceLow transmittance may indicate the fluid needs service attention or replacement under proper workshop judgment.
Transmittance %Shows the measured transmittance value of the transmission fluid.
TemperatureShows the current transmission fluid temperature during testing.
Battery / Backlight / SoundShows battery level, backlight indicator, and sound indicator for easier operation.
AUTOOL AS505 packing list showing transmission fluid tester retail box and user manual Click to enlarge
What Is In The Box

What Is In The Box

The package image shows the AS505 main unit, retail box, and user manual. Refer to the final package image and actual shipment for included items.

Main UnitAUTOOL AS505 transmission fluid tester with integrated 800mm probe
Retail BoxAUTOOL AS505 product package box shown in the package image
User ManualAUTOOL AS505 user manual for setup, display, battery installation, operation, and warranty information
Package NoteAccessories shown in the package image. Batteries are not listed in the package image, so prepare 4 × 1.5V AAA batteries if needed.
Manual And Downloads

Manual And Downloads

Download the AS505 manual for product structure, display description, battery installation, operating instructions, result interpretation, and warranty information.

AUTOOL AS505 transmission fluid tester user manual preview Click to enlarge

AUTOOL AS505 User Manual

Open the PDF manual for AS505 setup, battery installation, interface display, operation, transmittance result reading, and warranty guidance.

Download Manual

Need Testing Confirmation?

Contact AUTOOL Store before ordering if you need to confirm whether AS505 is suitable for your transmission fluid testing, probe use, temperature reading, result interpretation, or AS series model selection.

Related Products

Related Products

Compare related AUTOOL oil and fluid testers for brake fluid water content, engine oil quality, transmission fluid transmittance, brake fluid boiling point, and power steering fluid transmittance.

Questions And Answers

These answers cover AS505 test purpose, transmission fluid use, result reading, operating steps, temperature limits, power supply, package contents, model selection, and warranty support.

Warranty And Contact

Warranty And Contact

For AS505 transmission fluid testing, probe cleaning, battery setup, display reading, package confirmation, AS series model selection, or warranty support, contact AUTOOL Store directly.

Pre-Sales And Product Support

Use support if you need help confirming whether AS505 fits your transmission fluid testing needs, how to interpret transmittance results, how to use the 800mm probe, or which AUTOOL oil and fluid analyzer model to choose.

  • AS505 transmission fluid transmittance and temperature testing support
  • Probe cleaning, battery installation, and operating step confirmation
  • Display reading explanation for OK, warning, and suggested replacement indicators
  • Packing list and manual download confirmation
  • AS502 / AS503 / AS505 / AS506 / AS507 model selection
  • 3-year main unit warranty support for eligible non-human damage cases
  • Lifetime maintenance support and response within 24 hours when available

Customer Reviews

  1. 5
    (16 customer reviews)
    100% of customers recommend this product.
    5 Stars100%4 Stars0%3 Stars0%2 Stars0%1 Star0%
  2. Hugo Goncalves (verified owner)

    Chegou r¨¢pido em ¨®timo estado e funciona bem.

    0 of 0 found this review helpful
  3. Hugo Goncalves (verified owner)

    Chegou r¨¢pido em ¨®timo estado e funciona bem.

    0 of 0 found this review helpful
  4. Martin Lewis

    As a transmission fluid quality testing machine, the AS505 does a clear, crisp display that accurately measures the transmission rate of the transmission fluid, allowing me to very quickly determine if I need to replace the fluid with a new one, I would highly recommend it!

    0 of 0 found this review helpful
  5. pieter van

    The seller is flexible and upscale in dealing with customers and fast in response and delivery and advised to deal with him strongly, I bought him some devices and gave me a discount coupon, thank you this upscale deal.The quality is very good, well built but cable tool comes a little dumpled at the exit of the device. It basically reads the transparency of the lubricant that the darker, more contaminated and the lighter, the purer. Also reads the temperature of the lubricant at the time of the test.

    0 of 0 found this review helpful
  6. Makis (verified owner)

    Excellent service great product!!!

    0 of 0 found this review helpful
  7. Candice Moses

    It does work. As far as I can tell. It detects how dirty your transmission oil is. It uses a sensor to see how easy a light pass through the oil. It does work. It does work. Just like putting oil on a white paper towel. to see how dirty is is. This doe the same.

    0 of 0 found this review helpful
  8. Charlie

    Product better than expected.

    0 of 0 found this review helpful
  9. lambert

    Works well and feels good to use. Test results are accurate and recommended

    0 of 0 found this review helpful
  10. Montague Owen

    It does work. As far as I can tell. It detects how dirty your transmission oil is. It uses a sensor to see how easy a light pass through the oil. It does work. It does work. Just like putting oil on a white paper towel. to see how dirty is is. This doe the same.

    0 of 0 found this review helpful
  11. Alvin Edmund

    The AS505 reacts to the degree of impurities in the oil through the refractive index, so that the degree of turbidity and dirtiness of the transmission fluid can be measured! The product is perfect for us to test the transmission oil!

    0 of 0 found this review helpful
  12. Vivian Charlotte

    Fast delivery, accurate and precise testing. Perfect packaging, and it comes with its own battery, which is great!

    0 of 0 found this review helpful
  13. Garrett Daglis

    The optical probe gives a clear and accurate reading of transmission fluid condition, so I can quickly tell whether the fluid is clean or needs replacing.

    0 of 0 found this review helpful
  14. Thettalos (verified owner)

    Very useful tool

    0 of 0 found this review helpful
  15. ABDULHADI AL JUHANI (verified owner)

    Great customer service for excellent products.

    0 of 0 found this review helpful
  16. Daniel

    Excellent. With this oil gauge, I can check the condition of my automatic transmission fluid. It gives me the remaining fluid life percentage. I recommend it.

    0 of 0 found this review helpful
  17. Robert

    Durability: Excellent.
    Performance: Precise.
    Excellent, very reliable product. I tested it several times and it exceeded my expectations in every test.

    0 of 0 found this review helpful
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AUTOOL AS505 Exchanger Transmission Oil Tester with Display
AUTOOL AS505 Exchanger Transmission Oil Tester with Display

US$49.00

Add to cart This product has multiple variants. The options may be chosen on the product page