Automotive Oil Tester Serise can directly check the quality of various car fluids. It measures water content and light transmission to determine oil condition and clearly shows the results on an LCD screen for easy reading. This tester works with different types of car oils, including engine oil tester, brake fluid tester, car lubricating oil tester, transmission oil tester, and boiling point tester, ensuring stable and reliable performance for various vehicles. It is easy to use, provides accurate results, and is lightweight and portable. This makes it an essential tool in car repair shops, helping mechanics quickly find problems and keep vehicles in good condition.