mac , just be SUPER VIGILANT with maint. Specifically NOTING oil level & doing changes ; Coolant is known to give white thick cloudy smoke but usually it is a steady - continuing outpouring every where you drive drive so really on a piece of paper NOTE the coolant level periodically ,along with oil dipstick readings to identify "Consumption" . With NO performance issuesand coupled with a future rebuild , the aforementioned "Situation" may well be good for couple of years or even 20k+ mi.
my .02 cents
G - 2/23/2018