Well I certainly don't! I don't even put diesel in my car, the Fuel Fairy does that for me :) And I have no idea if my husband does the oil or if he leaves it to a mechanic.... I take zero interest in cars, providing I can get in, turn it on and drive that's all I want to know!
Yes, either of us for many years'. I did 'car care TAFE Courses' when I got my new car, so I'd could do basic repairs/maintenance on it.
Then both Careers kept on getting more busy, so started getting mechanic to do so, & continue doing same to this day.