Petroli-whatta? It sounds like a mafioso or a strange Italian pasta dish. That is exactly what ran through my mind the first time I ran across this strange word. I mean even my auto correct thinks it isn't spelled right.  So I did my due diligence and looked it up... well okay, more accurately, I Googled it.  Here's what I got... According to Collectors Weekly, petroliana is antiques related to the oil industry and gas stations. An area of collecting that focuses on advertising in categories such as gas pumps and globes, oil cans, road maps, signs and other promotional merchandise. There is another closely related area of collection called automobilia which sometimes intersects and blends with petroliana since they have cars in common. But pure petroliana is not limited to automobiles, rather it also encompasses oil and lubrication of all kinds of engines from small cream separator and washing machine motors to jet turbine engines and everything in between. Some of the...