blow by question

if you have a lot of vapor, it may just be a back log of water vapor, a normal byproduct of combustion and condensation. A breather routed from the base of the aircleaner and a working PCV would seal it all up. Id throw in a can of seafoam and clean it all out, then a bottle of Marvel UCL. Compression rings could be gummed up but oil rings may still be functioning as well as exhaust valve seals.
Grammas old Buick Apollo never went more than 5 miles a week until me and my dad blew it out on a spirited run on the highway. That thing left a steam trail for 5 miles. replaced PCV, Ran like a champ afterwords, changed oil was like tar.