If you’re looking to determine what your best oil change intervals should be, the best method is via oil analysis. Of course, on many passenger car vehicles that only take 4-6 quarts of motor oil, the cost of the oil analysis is nearly as much as a complete oil change. Of course, the end result...

by Michael Kaufman This is number two from a series of half a dozen very useful, and free, motor oil tests that you can perform in your very own garage. If you are one of the many people who owns a vehicle that is driven infrequently, is commonly driven on low mileage trips and/or is driven or stored...