One of my grandmas had a Olds Vista Cruiser station wagon with a 455 V8. She used to ask me to change her oil for her. Of course I had to test drive it each time to make sure the oil got where it needed to go :D
Wow - coming from someone that got seriously yanked in a bad EBAY deal, you're honesty about the car's flaws is really refreshing. Wish you great luck with the sale, it's a sweat car. Must be hard to part with.