The AUTOOL AS503 Lubricating Oil Tester is a professional device specifically designed for the automotive inspection and repair industry. AUTOOL AS503 accurately evaluates the quality and performance of engine oil by measuring the transmittance of lubricating oil in gasoline or diesel engines, detecting impurities and contaminants. The AS503 features a user-friendly design with a high-definition display interface and precise sensors. It can measure key parameters such as oil temperature and provide intuitive results, making it a powerful, well-designed, and efficient tool for lubricating oil testing.

AUTOOL AS503 Car Engine Oil Tester Transmittance of Petrol Oil and Diesel for Car Engine POA Oil Quality Temperature °C °F
AUTOOL AS503 Engine Oil Tester with Digital Display for Auto Check Gasolin e & Diesel Car Engine POA Oil Quality Repair Tools

The AUTOOL AS503 Lubricating Oil Tester uses optical sensing and digital analysis technology to assess the quality of lubricating oil. The optical sensor measures the transmittance of the oil, detecting changes in impurities, contaminants, or aging substances within the lubricating oil, thereby accurately determining the quality status of the oil. The AS503 is equipped with a high-precision chip that analyzes the data collected by the optical sensor and calculates the test results based on predefined standards (quality parameters for gasoline and diesel engine lubricating oils). The results are displayed as numerical values on the HD screen and also provide recommendations, such as “continue using,” “recommend replacing,” or “immediate oil change,” making it easier for users to make quick decisions.

AS503 Engine Oil Quality Tester Features

High-Precision Detection: Utilizes optical sensing and digital analysis technology to accurately measure the transmittance of lubricating oil, quickly determining the oil’s quality status with far greater precision than traditional tools.

Multifunctional Testing: Supports both lubricating oil transmittance detection and oil temperature measurement, providing users with more comprehensive data to help accurately assess the condition of the engine oil.

Wide Compatibility: Suitable for both gasoline and diesel engine lubricating oil testing, meeting the needs of various vehicle types. It serves as a universal tool for vehicle owners and repair technicians.

Fast and Intuitive: Complete the test in just a few seconds. The HD digital display intuitively presents the results and provides replacement recommendations, eliminating the need for complex judgment. Equipped with a 2.8-inch LCD backlight display, it ensures clear visibility of the test data in both bright and low-light environments, offering a more comfortable user experience and helping users complete their tasks efficiently.

Portable and Durable: The compact and lightweight design makes it easy to carry, ideal for daily maintenance by vehicle owners and mobile operations by repair technicians. The flexible 800mm hose attached to the probe allows for more convenient and flexible handling. The hose is made of PTFE material, offering excellent oil resistance, oxidation resistance, and corrosion resistance, significantly enhancing the durability and lifespan of the device.

Oil Temperature Measurement: Equipped with a built-in temperature sensor, the device can measure and display the actual temperature of the engine oil in real time. This provides a clear reflection of the engine’s operating condition and load, ensuring the test results are more accurate and reliable.

Extend Engine Life: By promptly detecting and replacing the lubricating oil, it prevents engine wear or failure caused by declining oil quality, thereby extending the engine’s lifespan and ensuring driving safety.

Dual Testing Mode Selection: Equipped with both gasoline engine mode and diesel engine mode, allowing users to easily switch between different engine types. This caters to diverse testing needs and provides a more precise and professional testing experience for users.

Warm Tips

AS503 primarily tests the light transmission of lubricating oils and detects the presence of metallic impurities in the oil. Recommend to test once when using 5000-1W kilometers.

No support for testing Suzuki J20A engine for the time being！！！

Do not force the hose out in the event of a jam.

Why Choose AS503 Engine Oil Tester?

The AUTOOL Automotive Engine Oil Tester is a professional tool designed for the automotive maintenance field. It is capable of measuring parameters like engine lubricant transparency and oil temperature. This device stems from AUTOOL’s independent research and development, boasting several intellectual property rights. Moreover, it has received authoritative certifications from organizations like CE, FCC, and ROHS.

Engine oil is essential for lubrication, cooling, rust prevention, cleaning, sealing, and buffering. Using the AUTOOL Car Engine Oil Tester helps prevent engine issues and breakdowns. With simple testing procedures, users can get accurate lubricant quality analysis and maintenance recommendations, ensuring efficient engine operation and extending its lifespan.

Accessories：
1pcs X Autool AS503 Engine Oil Tester

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