(1) Inserting the probe into the oil tank to test the light transmittance can reflect the impurities or contaminants contained in the oil and facilitate diagnosis of the quality and performance of the oil. Transmittance Test and Oil Temperature MeasurementInserting the probe into the oil tank to test the transmittance can reflect the impurities or contaminants contained in the oil and facilitate diagnosis of the quality and performance of the oil. The engine oil quality tester also has a builtin highprecision temperature sensor to measure the actual temperature of the engine oil, which can reflect the working status and load of the engine. Temperature measurement range 10125 14257. Dual Test Mode For Wide ApplicationThe engine oil quality tester can choose between gasoline engine mode and diesel engine mode to meet diverse testing needs. This engine oil tester is used to detect the lubricating oil of most gasoline engines and diesel engines on the market. It can sample and measure these two types of oil separately to more accurately diagnose the oil condition. 80cm HighQuality Hose With High Precision ProbeThe hose is made of highquality Teflon material, which is highly resistant to oil, oxidation and corrosion, and has a longer service life. The 800 mm 31.5 inches hose makes the oil quality tester more flexible in testing. The probe uses a photoelectric transceiver sensor probe, making the measurement results more accurate and reliable. 2.8Inch Backlight Screen and UserFriendly DesignThe car oil quality tester is equipped with a 2.8inch LCD backlight display, which can adapt to environments such as strong light or darkness. The measurement results are clearly visible, helping users complete their work easily and comfortably. The handheld part of the engine oil tester is made of silicone substrate, which is comfortable and stable to hold, and can be easily operated with one hand. Battery Powered and Automatic ShutdownThe engine oil quality tester is powered by 4pcs 1.5V AAA batteries included with the tester, and the battery compartment symbol in the upper left corner of the screen will display the battery power. If there is no operation for 5 minutes, the engine oil quality test device will automatically shut down to save power.