my dad works in a research facility in texas, studying petroleum products. in general, he runs lots of tests that are commissioned by the government or oil & gas companies. he tests things like oil, unleaded gasoline, diesel fuel, and transmission fluid. he knows who makes the best injectors and what gas station you should go to. he's also got a giant stash of chocolate in his office. my dad showed me around his lab and let me take pictures of what i'm sure is a whole lot of intellectual property. thanks!