Your last video looks like steam to me but without being there it's really hard to tell.
Rub your finger in the tailpipe while its running. Is it greasy and oily or wet and sooty? If it's wet, dab it on your tongue and see if it's bitter (or sweet of the coolant hasn't been changed in many years). If it's bitter or sweet, it's coolant and you have a head gasket leak.
Last edited by Otto Skorzeny; 03/16/2024 6:46 PM.