I'm lucky w/ the Valvoline Insta oil change in my area, there are a couple old retired mechanics that work there, more for kicks than anything else. Doods are sweet man, alwayz doin extra stuff, for free! I can dig free! And are quick to add what is a rip-off and what is a good thing.
Ours here is run by a bunch of college/HS kids with about 2-3 people actually older then 25.......So screwing around and not knowing a whole lot is kinda common. I know a few people that used to work at this particular location....Heard some pretty bad horror stories....But they do have a rather extensive training program and certification training that they have to complete before they are allowed to touch anything. But the Lakeville location here does have a few screw ups. That'* for damn sure.