I too have the working on the car restriction in my condo parking lot, though I do the limited amount of modding and brief work on it there. No one has complained so far.
I added the Fumoco oil change valve, so that I can easily change the oil in a matter of minutes and few will even be aware. The longest part of that process is changing the filter and pouring in the new oil, all of which could be done anywhere, for that matter near the convenience of the oil dump at Walmart. I'm sure they wouldn't mind, if you don't make a mess and are only there long enough to do the deed.