When I first took delivery of my used 2017 Latitude (purchased 1 year ago this week, happy anniversary to me...), I was told everything was checked, it's Certified Pre-Owned, like that is supposed to mean something... I tend to NOT believe that, so I did my own inspection. Air filter clean and new, oil topped off and clean, cabin air filter beyond filthy, coolant level ever-so-slightly below the full line. I replaced my cabin air filter, replaced the air filter with a K&N, and topped off the coolant with distilled water.
The coolant has never dropped since day one. That of which I am thankful.