In high school we sent a girl to Jiffy Lube to get the winter air changed out for summer air in her tires. Also suggested they top off her blinker fluid while they were at it. She came to school pretty mad the next day.
Biggest mistake for me was putting an aftermarket poly cell under my bed in the 87. Nothing but problems with the fuel system since, and it's been parked in my driveway for over 5 years now. Just about have all the pieces I need to get it back to factory, just short on time.