My Dad's 76 and I know what you're talking about. No disrespect to your dad.
Sometimes I feel like having someone change my oil but one of the last times I did, 7 years ago, and only cause I was living in an apartment that wouldn't allow me to do it, the Texaco Quik Lube left my hood partially opened so it almost flew up on the freeway (thank you Ford safety latches). Then when I immediately pulled over to shut it, I found some tools in my engine bay. What would a tech need a screwdriver for on an oil change? Once after that I did take it somewhere in a different state and the mechanic jacked up my PCV trying to sell me a new one. I was pissed and bit the manager's ass off. They replaced it for free. Also Texaco Quik Lube.
amnit: