AUTOOL AS505 · OPTICAL TRANSMISSION FLUID (ATF) ANALYZER
AUTOOL AS505 Digital Optical Transmission Fluid (ATF) Quality & Temperature Tester
Prevent expensive transmission rebuilds: quantify suspended clutch dust, oxidation, and fluid temperature in 2 seconds with ±2% optical accuracy.
- ATF / CVT / DCT Testing
- 800mm PTFE Probe
- 2.8" LCD · 1-Year Warranty
Engineered for Professional Workshop Demands
The AUTOOL AS505 is built to deliver speed, accuracy, and durability in busy service bays.
Calibrated Specifically for Transmission Fluids
Precision optoelectronic sensor measures light transmission through ATF, CVT, and dual-clutch fluids to quantify clutch dust and thermal degradation.
800mm Chemical-Resistant PTFE (Teflon) Probe
5.3mm diameter flexible hose resists aggressive synthetic ATF additives and temperatures up to 125°C.
Integrated Fluid Temperature Sensor (-10°C to +125°C)
Displays real-time transmission fluid temperature in °C or °F alongside optical purity percentage.
3-Tier Pass/Warn/Fail Display with Audible Buzzer
Shows 'OK' (100%–60%), '!' warning (60%–30%), or '×' with an audible alarm (<30%) when immediate ATF flushing is needed.
PREVENT TRANSMISSION FAILURE
Catch Degraded ATF Before Valve Body or Clutch Damage
Over 80% of automatic transmission failures stem from overheated, contaminated fluid. The AS505 gives you objective numbers to recommend timely ATF service.
- 100% – 60% Transmittance: Fluid is clean and healthy (OK)
- 60% – 30% Transmittance: Clutch wear particles accumulating (!)
- Below 30% Transmittance: Severely degraded fluid (×), flush immediately
IDEAL FOR ATF FLUSH & INSPECTION SHOPS
Show Customers Before-and-After Purity Percentages
Pair the AS505 with your ATF exchange machine to demonstrate the exact percentage improvement between old and fresh transmission fluid.
- Objective before/after proof for transmission flush services
- Essential pre-purchase inspection check for automatic vehicles
- Ergonomic silicone-Armored grip and bright 2.8" backlit LCD
EASY ZEROING & PROTECTIVE CASE
One-Touch Air Calibration & Wipe-Clean Teflon Probe
Wipe the optical slot with a paper towel and press Test in air to verify 100% calibration prior to each vehicle.
- Runs on 4 × AAA batteries with automatic power-saving shutoff
- Includes custom blow-molded carrying case
- Backed by a 1-year official Otoeko warranty
Detailed Visual & Technical Infographic Showcase
Close-up hardware details and application scenes of the AUTOOL AS505.
See It in Action
Watch the official product video demonstrating setup and real-world operation.
Technical Specifications & Hardware Parameters
Complete manufacturer-verified technical data and operating ranges.
| Brand / Model | AUTOOL AS505 Digital Transmission Fluid Tester |
|---|---|
| Application | Automatic Transmission Fluids (ATF / CVT / DCT) |
| Measured Parameters | Optical Transmittance (%) & Fluid Temp (°C/°F) |
| Transmittance Range | 0.0% – 100.0% (±2% Accuracy) |
| Temperature Range | -10°C to +125°C (14°F to 257°F) |
| Probe Length & Diameter | 800 mm (31.5 in) PTFE Hose · Ø 5.3 mm Tip |
| Display | 2.8-Inch Backlit Digital LCD |
|---|---|
| Alert Thresholds | 100–60% (OK) · 60–30% (!) · <30% (× + Buzzer) |
| Response Time | ~2 Seconds |
| Power Supply | 4 × 1.5V AAA Batteries (Auto Shut-Off) |
| Kit Weight | ~1.1 kg (Including Hard Carrying Case) |
| Warranty | 1 Year Official Otoeko Warranty |
Workshop Application & Operating Guide
Recommended 4-step standard operating procedure for accurate results.
Wipe & Zero Probe
Clean the optical window at the probe tip with a paper towel and power on the unit to confirm 100% baseline.
Verify Safe Temp
Ensure transmission fluid temperature is below 60°C before immersing the sensor.
Submerge Probe Tip
Insert the 800mm PTFE probe down the transmission dipstick tube or into a drawn ATF sample.
Read % & Temperature
Press the test button to view optical transmittance %, fluid temperature, and OK / ! / × grading in 2 seconds.
Conventional Methods vs. Professional Diagnostics
How precision engineering eliminates guesswork and comebacks.
Conventional / Basic Methods
- Visual blotter-paper checks cannot measure suspended micro-wear
- Lacks integrated fluid temperature measurement
- Hard to convince customers without a numerical readout
- Short probes cannot reach down transmission fill tubes
With AUTOOL AS505
- Measures ATF optical transmittance from 0% to 100% (±2% accuracy)
- Displays live fluid temperature (-10°C to +125°C) simultaneously
- Builds customer trust with clear % scores and audible alarms
- 800mm PTFE flexible probe stored in a rugged hard case
Package Contents — Ready for the Workshop
Complete factory kit inspected prior to dispatch.
- 1 × AUTOOL AS505 Digital Optical Transmission Fluid Tester (800mm Probe)
- 1 × Custom Blow-Molded Hard Carrying Case
- 1 × User Manual (Uses 4×AAA Batteries)
1 Year Official Otoeko Warranty
The AUTOOL AS505 is backed by a 1 Year official Otoeko warranty against manufacturing defects, with full technical support.
Frequently Asked Questions
Key technical questions from technicians and workshops about the AUTOOL AS505.
What is the difference between AS505 and AS503?
AS505 is optically calibrated for automatic transmission fluids (ATF), whereas AS503 is calibrated for petrol and diesel engine oils.
How do I test sealed transmissions that have no dipstick?
For dipstick-equipped transmissions, insert the probe down the tube; for sealed units, draw a few milliliters from the fill/level plug and dip the probe tip into the sample.
Does it work on red, amber, and green ATF/CVT fluids?
Yes, because it measures light transmittance rather than color hue, it accurately detects suspended wear particles across ATF, CVT, and DCT fluids.
What do the status icons mean?
100%–60% displays 'OK' (good fluid); 60%–30% displays '!' (warning); below 30% displays '×' with an audible beep (replace fluid immediately).
Is the probe resistant to synthetic ATF chemicals?
Yes, the 800mm probe is made of pure PTFE (Teflon), which is completely impervious to synthetic transmission fluids.
What is the warranty period?
It comes with a 1-year official Otoeko warranty.