Once everything "soft" was removed, and prior to paint, I ran 10 gallons of zinnsser oil based primer through my sprayer.

Those that survived did so by focusing on municipal work, utilities, and maybe some oil & gas field work, or a bit of commercial. 

These are water-based primers.Kilz Original and Kilz Complete, on the other hand, are oil-based primers.

Then everything was sprayed with Kilz oil-based primer, before new subfloor and sheetrock was installed.

My tenants were supposed to fill the oil tank when they left the property.

The economy is far more dependent on a strong price of oil. 

I have baked roasts, chicken, air boiled eggs, brownies, bread, corn bread, etc. it is a nice sense of security knowing that I'm able to do that in times of needs.

If they didn't have our number, they would have called the police and DEP for some paint/oil smells coming from our flip. 

A quart of motor oil, and I would be charging the tenant. 

While the stock market can be extremely explosive and subject to radical day to day shifts in value based upon economic news, oil prices, and political instability around the world, real estate is remarkably stable and has consistently trended upwards in value for the last 100 years.