Lubricheck eliminates the risk of extending your oil changes by allowing you to scientifically analyze your oil quality at any time, providing you immediate results. It also tests for any sudden or unexplained drop in oil quality caused by impurities in the oil system, such as coolant leaks, water, and metal particulates. It's like a 'blood tester' for your vehicle.
Check this out gang... http://lubricheck.com/ From the manufacture site...