Blue smoke posted by Anath3ma on April 13, 2017 at 01:50 PM
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and it didn't smoke when leving the shop and you did similar driving before the shop then what ever you did on the way home caused something to fail. 211K is pretty high miles. Do a compression check to see what cylinder(s) is(are) down.
Before that do a vacuum test and report the readings here as well as the compression #'s