"Eating away at it, most likely." Tony could sympathise, having heard the same complaints from Misty. Oil was apparently more refined in their time, in ways that companies now simply couldn't hope to accomplish with the technology available to them.
Of course, those other companies didn't have Tony Stark.
He frowned slightly, the thought of a perfectly good car being forced to run on flawed fuel annoying him perhaps more than it would have annoyed a normal person. He did have some strange peculiarities. "What would you say if I asked you to write down everything you know about oil refinement in your own time? No matter how basic that knowledge is. I'd put down good money on a guess that I could make something work-- get a better fuel for your cars. Hell, I'm sure my Aston wouldn't object either."