They also use shit oil, you’ll be lucky if it’s the right weight you were even supposed to have, and you don’t have to look very hard before finding someone who’s left one of those places with no oil put back, or the oil cap left off, or a leaky filter or drain bolt, or stripped drain bolt threads, etc.

I’ve always changed my own oil.

Also, a special shout-out to Valvoline Restore and protect oil. It really does make your engine cleaner and free up piston rings. My 08 Prius has 272,000 miles on it and the last 16,000 miles I’ve been using that oil (lots of vehicles around those years were using low tension oil rings) I’ve gone from burning a quart around every 2,800 miles, to burning a quart every 5,000 miles.