The property does come with the bonus of a dilapidated fiberglass boat hull in the back yard next to the old oil and gas cans you get to pay to have taken away. 

These guys operate just like new car service people -- any maintenance cost that can be avoided for the promised years of zero-cost maintenance is avoided and then the car's a lemon that needs big bucks in neglected maintenance as one after another system fails, exactly as it was designed to.

Zillow has been grossly inaccurate at estimates in the past, due to the nuances of it being in an oil boom/bust town.

The house was completely painted with both latex and oil based paint.

That's hilarious Paul - sounds like you understand your market - If I recall, guys working on wind turbines (maybe) oil refinery workers?

Or a free oil change from your mechanic because he is the one you use for major work.I know we live in the freebie culture, but you use the word "relationship."

Without knowing whether they are gas, electric, or oil I can't tell you a lifespan.The water heaters are the concern for preventing further damage.

Paint the floor with an oil-based primer like Kilz to lock in the odor.

Getting a new tenant may pay you more initially, but there are a lot of "lemons" out there that have the possibility of losing you money and causing many headaches. 

I got my graduate degree, working for a major oil and gas company in Houston, and they couldve cared less.