1. Introduction
The QPKING AS503 Engine Oil Quality Tester is a high-precision device designed to assess the quality of engine lubricant oils in both gasoline and diesel vehicles. It provides essential information regarding oil transmittance and temperature, helping users determine the health of their engine oil and when replacement may be necessary. This manual provides comprehensive instructions for the safe and effective use of your AS503 tester.
2. Safety Information
- Always wear appropriate personal protective equipment, such as gloves and eye protection, when handling engine oil.
- Ensure the engine is turned off and cooled down before attempting to test the oil. Hot oil can cause severe burns.
- Keep the device and its components away from children and pets.
- Do not attempt to disassemble or modify the device, as this may void the warranty and cause damage.
- Dispose of used batteries and engine oil according to local environmental regulations.
3. Product Overview
The AS503 Engine Oil Quality Tester features a user-friendly handheld design with a flexible probe for convenient testing. Its high-precision optical sensor ensures accurate measurement results.
Figure 1: QPKING AS503 Engine Oil Quality Tester with flexible probe.
Key Features:
- Compatible with Various Lubricant Oil Standards: Suitable for most gasoline and diesel engine lubricant oils.
- Oil Temperature Display: Integrated temperature sensor for convenient assessment of engine operating status.
- High-Precision Optical Probe: Ensures accurate measurement results.
- Flexible Hose Probe (800mm): Offers a flexible and convenient way to conduct tests. Made of PTFE material, resistant to oil, oxidation, and corrosion.
- User-Friendly Handheld Design: Silicone-lined handheld portion provides excellent grip and lightweight design for easy single-handed operation.
- Large LCD with High Definition: Equipped with a backlit 2.8-inch LCD screen for clear display in various lighting conditions.
Figure 2: Overview of AS503 Engine Oil Quality Tester and its main features.
4. Setup
4.1 Battery Installation
The AS503 tester requires 4 x 1.5V batteries for operation. To install or replace batteries:
- Locate the battery cover on the back of the device.
- Remove the battery cover.
- Insert 4 x 1.5V batteries, ensuring correct polarity.
- Replace the battery cover securely.
Figure 3: Battery compartment with batteries and cover.
5. Operating Instructions
Follow these steps to accurately test your engine oil:
Figure 4: Visual guide for operating the AS503 tester.
- Prepare the Probe: Wipe the test probe clean with a soft cloth.
- Access Oil: Remove the engine oil dipstick.
- Select Engine Type: Press the “Oil Type” button (often labeled with a gear icon or similar) to select the vehicle's engine type (Gasoline or Diesel).
- Submerge Probe: Carefully submerge the testing probe into the engine oil through the dipstick tube or by extracting a sample into a clean container. Ensure the probe tip is fully immersed.
- Start Test: Press the “Play” button to initiate the test.
- View Results: The display will show the test results, including oil transmittance percentage and temperature.
5.1 Display Details
The 2.8-inch backlit LCD provides clear information:
Figure 5: Detailed explanation of the AS503 display indicators.
- Battery Level: Indicates remaining battery power.
- Backlight Indicator: Shows if the backlight is active.
- Sound Indicator: Shows if sound alerts are active.
- Oil Type: Displays selected engine oil type (Gasoline/Diesel).
- Analog Bar Graph: Visual representation of oil transmittance.
- Transmittance OK: Indicates good oil quality.
- Transmittance Warning: Suggests oil quality is deteriorating.
- Suggested to Replace: Indicates oil needs immediate replacement.
- Temperature of Engine Oil: Displays current oil temperature.
5.2 Important Considerations
- In cases where the oil filler cap of certain vehicle models does not allow direct insertion of the testing probe, it is necessary to extract a portion of the engine oil from the vehicle before conducting the test.
- This product relies on optical detection probes to analyze the particulate content in oil. As a result, it is not suitable for analyzing automotive engine oils containing components such as molybdenum disulfide (MoS₂), organic molybdenum, graphene, and similar substances.
Video 1: Demonstration of the QPKING AS503 Engine Oil Quality Tester in use, showing the testing process and display readings.
Video 2: General overview of a Gasoline & Diesel Engine Oil Quality Tester, illustrating its application and features.
6. Maintenance
- After each use, clean the probe thoroughly with a soft, dry cloth to remove any oil residue.
- Store the device in a dry, cool place away from direct sunlight and extreme temperatures.
- Replace batteries when the low battery indicator appears on the display to ensure accurate readings.
7. Troubleshooting
If you encounter issues with your AS503 tester, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on | Low or dead batteries; Incorrect battery installation | Replace batteries; Ensure correct polarity |
| Inaccurate readings | Dirty probe; Incorrect oil type selected; Oil temperature too high/low | Clean probe; Verify engine oil type; Allow oil to reach operating temperature |
| Display not working | Device malfunction; Extreme temperature exposure | Contact customer support; Move device to a suitable temperature environment |
8. Specifications
Figure 6: Technical specifications and physical dimensions of the AS503 tester.
- Operating Voltage: 6V (4 x 1.5V batteries)
- Operating Temperature: -10°C to 60°C (14°F to 140°F)
- Probe Length: 800mm
- Display: 2.8-inch Backlit LCD
- Dimensions (approx.): 175mm (6.9 inches) x 72mm (2.8 inches) x 29mm (1.1 inches)
- Item Weight: 13.1 ounces
9. Warranty and Support
QPKING offers a three-year warranty for damages caused by non-human factors. We are committed to providing lifelong maintenance for our products. For any inquiries or support needs, please contact our customer service team. We aim to respond as soon as possible within 24 hours.