AUTOOL AS503 Engine Oil Tester – Digital Display, Sound Alarm, Petrol & Diesel, CE FCC
- Regular
- $99.00
- Sale
- $99.00
- Regular
- Unit Price
- per
3-Level Sound Alarm System — Know Exactly When to Change
100% – 60%
Transmittance
Oil is good — no change needed
60% – 30%
Transmittance
! Warning — oil change recommended soon
Below 30%
Transmittance
BEEP alarm — change oil immediately
Key Features
High-Precision Optical Sensor
Integrated optoelectronic sensor measures oil transparency using optical principles for accurate, repeatable results in any lighting condition
2.8" Backlit LED Display
Large backlit LCD screen with clear digital readout — easy to read in bright daylight or dim workshop conditions
Built-in Oil Temperature Sensor
Measures and displays actual oil temperature to ensure readings are taken within the normal operating temperature range for accurate results
3-Level Sound Alarm
Visual exclamation mark warning at 30–60% transmittance; audible beep alarm below 30% — clear alerts for every oil condition level
800mm Flexible PTFE Probe
Extra-long 800mm probe made of PTFE material — oil and oxidation resistant, highly flexible for easy insertion into the oil dipstick tube
Silicone Grip Handheld Body
Ergonomic silicone-lined handle for secure single-handed grip — lightweight and comfortable for extended use
Petrol & Diesel Compatible
Separate measurement modes for petrol and diesel engines — select engine type before testing for more precise oil quality assessment
Test with Used Oil Directly
No sample preparation needed — simply insert the probe into the engine oil and test directly for fast on-the-spot results
How to Use — 6 Simple Steps
- Wipe the test probe clean before starting
- Remove the oil dipstick from the engine
- Press the ↶ button to select your vehicle's engine type — petrol or diesel
- Submerge the testing probe into the engine oil via the dipstick tube
- Press the ► button to start the test
- Read the results on the display — transmittance percentage and oil temperature shown instantly
Certifications
Technical Specifications
| Product Name | AUTOOL AS503 Engine Oil Tester |
| Display | 2.8-inch backlit LED / LCD screen |
| Measurement Method | Optical transparency (optoelectronic sensor) |
| Compatible Engine Types | Petrol and diesel engines |
| Probe Length | 800mm flexible probe |
| Probe Material | PTFE — oil and oxidation resistant |
| Handle Material | Silicone substrate grip |
| Temperature Sensor | Built-in — measures actual oil temperature |
| Alarm Levels | 3-level — OK / Warning (!) / Audible beep alarm |
| Alarm Thresholds | 100–60% = OK | 60–30% = Warning | Below 30% = Beep alarm |
| Certifications | CE, FCC, ROHS |
Key Benefits at a Glance
- Measures engine oil transparency to detect impurities, contaminants and metal wear particles
- Separate petrol and diesel engine modes for more accurate results
- 3-level alarm system — visual warning and audible beep for clear oil change guidance
- Built-in oil temperature sensor ensures readings are taken at correct operating temperature
- 800mm flexible PTFE probe — oil resistant, long-lasting and easy to insert
- Ergonomic silicone grip — comfortable single-handed operation
- CE, FCC and ROHS certified — independently verified quality and safety
- Test directly with used engine oil — no sample preparation required
