Features: 1.Motor oil tester has high level of accuracy and sensitivity, with calibration function, detection results are precise. 2.Oil quality inspection to ensure oil safety, allows you say goodbye to substandard and counterfeit lubricants. 3.With LED indicator function, you can clearly figure out the state of oil quality, the last light indicates the quality of the lubricant. 4.Mainly aimed primarily at increasing the acidity of lubricating oil, providing you with a lot of convenience. 5.Suitable for detect diesel engine oil, gasoline engine oil, by testing the oil acid, carbon deposition and moisture, other impurities. Specification: Item Type: Oil Tester_x000D_ Material: ABS_x000D_ Color: Red_x000D_ Size: Approx. 53 x 83 x 13mm/2.1 x 3.3 x 0.5in_x000D_ Working Temperature: 15-27_x000D_ Test Type: Engine Oil_x000D_ Battery Type: Button Battery_x000D_ Battery Model: CR2032_x000D_ Battery Capacity: 240mAh_x000D_ Battery Voltage: 3.0V_x000D_ Purpose: Suitable for Oil Quality Detection _x000D_ Instructions:_x000D_ 1.Select engine type GAS or DSL(diesel).Turn on key down. Wait for 5 seconds, and then drip oil to the test tank when the green light is flashing on the instrument and the red light is flashing. Finally, press the test key to start the test_x000D_ 2. Add a few drops of lubricating oil to be tested to the sensor of the instrument. Do not miss the test tank._x000D_ 3.Press the "test" test key and release it quickly. The 10 lights will flash in sequence. The last light indicates the quality of the lubricant._x000D_ 4.No. 1-7 Any LED flashes green, indicating good oil quality._x000D_ No.8 or No.9 led flickers yellow, and the oil quality is average._x000D_ No. 10 LED is flashing red slowly. It is recommended to change lubricating oil._x000D_ No. 10 LED flashes red rapidly, it is recommended to test the engine. Note: If the test results show that red LED No. 10 flashes, it usually indicates that the lubricating oil has reached an acceptable lower level. At this time, the lubricating oil needs to be replaced._x000D_ Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.