We had a COATS 4040 center post, and a flat horizontal balancer.
It was alot of fun to use. Learned the hard way to use it.
The first time they let me put a tire back on it was already off head mechanic said go ahead throw the wheel back on, so I did, few minutes later he was doing it again, I had put the acorn lug nuts with the taper facing out, I asked him to let me know next time and show me what I screwed up and I will fix it and reminded him I did not take it off and was a flip of a coin and I should have asked. After that I usually asked or they let you know you screwed it up in some sort of fun way.
Oil was always pricey, $2.50qt/$2.65 w/Tax.
A plug was $5.35 w/tax.
At one point gas was .98 but for a very short time. That's the lowest I've seen/remember.
Spent some cold, some wet, some hot nights there, worked 3:30pm to 9:00pm couple days and week and longer on weekends. Would open on Sunday AM and listen to a radio show called flashbacks where they would play all sorts of classic rock and tell stories.
Worked 2 Thanksgiving's 13hr days solo, got more food and beer then a 16/17 year old knew what to do with, folks would stash it in the ice machine for me for after work. The one year I had like 3 full turkey dinners and dessert. How can you pass that up as a kid.