When we moved into the new house I took my cars to Valvoline all the time. I had an old highschool friend that'* the manager so I figured it was safe. After about a year the wifes car developed a shake so I took it to the shop after just getting another oil change. The shop found a bad ball joints and said one was really bad. He said that it hadn't been greased in a long time. I disagreed and he showed me the zirk was seized and theres no way anyone got grease in there in a long time. We went over to the other side and there was no old grease hanging around the boot. Pulled the boot back and there was the red synthetic I had put in when we got the car about two years earlier. The bastages didn't tell me about the seized zirk because they weren't greasing anything!
I haven't went back since. Lube, OIL, and Filter all done in my driveway regardless of the weather.
98 SSEi 111,222 miles.
Intense PCM, LS6 Valve springs, PEMS, FWI. Hawk Street Pads.