User blog comment:Dominic1743/“The Heroes' Journey” Discussion/@comment-44905711-20200124024009/@comment-108.36.76.116-20200125222552

I will remind you that at least once, Dean was doing normal maintenance under Baby's hood outside a motel when Sam Came out to talk to him,  Given his skills as a mechanic, I think Dean is heavy into preventative maintenance and tends to fix things at the first sign of wear. Maybe that's what he does when they have 3 weeks of no monsters.