The General Motors answer was, "If transmission oil is appearing in your drive way, you should be bringing in your car for service".

Stuff I have seen at work. That seem odd.

Chryslers with transmission fill tubes but no dip stick.
Chryslers with the battery in the left front wheel well/fender. Between the bumper and tire, which is a crumple zone.

BMW, some models, do not have engine oil drain plugs. A pump is required to change the oil.

Mercedes Benz, ML, battery is under the front passenger seat. But the installation instructions state to just cut the carpet. (What the Hell?)

My personal car; I use to do it myself all the time. Now only sometimes.
Company car; Never, the company pays for it. Take it the dealer, or Mr. Lube.

There is a car hoist less than 10 feet from my office door. Due to company policies the hoists are off limits to employee vehicles. I could bring in my used oil for disposal, that seems OK. Since they get money for used oil.

Those guys at Mr. Lube have the knack of get that air filter out of the air cleaner canister, faster than you can say, "Do not worry about the air filter, Thanks".