At a filling station while I was in high school.
We checked the oil, washed the windshield and swept out the floor. Only checked tire pressure if asked. Of course we also pumped gas.
I sure miss full service stations.
The last one I know of was in Charleston, SC. The year I moved away (1996) they still had a full service pump for a few cents more on your gas. Nice fellows and a real good trustworthy mechanic.