To a formulator, a motor oil is a complex blend of 10-15 ingredients carefully balanced and tested to meet the industry specifications and market claims. To a blender it can be as simple as mixing three liquids together and filling it into bottles. And to the consumer it is, for the most part, a mysterious golden fluid with confusing numbers and letters that all make the same claims about being the best product possible for your car. In reality, it is all of these things.