Of all the tasks that a mechanic performs over the course of a year, the most common is an oil change.  This simple task, which is essential for the smooth running and health of any modern vehicle, is a straightforward job, but it is one that has been made much more difficult over recent years thanks to the introduction by some manufacturers of a special warning light.  When you perform an oil change on many modern cars you must reset the change oil light, but until recently, this simple task required you to use expensive original manufacturer e