Each and every single day out of the year that they arrive for work, the mechanics who work in auto shops all across the country must be prepared to answer questions that are fielded to them by customers who know very, very little about when to change motor oil, where to change car engine oil, where to get an oil change, and which motor oil should I use. These mechanics must be prepared to answer these and other questions about bulk motor oil. One of the most common questions about bulk motor oil that is fielded to these mechanics is…