I'll say it! DIY! Over time you'll save a fortune and not have to worry whether they used the right oil or not. If they used a fleece oil filter or not. If they stripped the drain plug or not. If they changed the O rings or not. Yes, it's messy. You'll have to buy the oil and filters yourself. You'll have to take the used oil to someone to recycle it. But you will have no doubts about what was done and how it was done. Be sure to keep records with receipts.

Les