May I ask why you avoid the dealer? Kelly Blue Book keeps people from claiming they have an excellent condition car unless there is a history of service along with all paperwork and receipts. Some car shops don't report to places like carfax when there has been regular service, dealers do, so you're helping yourself maintain value by going to the dealer. I'm curious why you are avoiding it?
I avoid any place for oil changes, dealer included. I worked at a Ford dealer and Jiffy Lube when I was younger, they have the same type of guys doing oil changes at the dealer that you'd find at Jiffy Lube. You're rolling the dice, you'll probably get someone who cares, but maybe not. Maybe the guy does crank, maybe he's hung over, maybe she's lazy and doesn't replace the drain plug crush gasket, maybe they're dumb and strip your drain plug, maybe they forget to add oil, start the car up, hear the engine start ticking, then turn it off, add oil, and send you on your way. Maybe they just use bulk dino oil 5W30 and print out synthetic on the receipt. You'd never know. Or maybe they were like me and did a great job. I've seen it all.
I log all of my oil changes on myHyundai, keep all of my receipts, and even take pictures of the receipts and oil bottles / oil filter box and save them to google photos.
In short, people change their own oil because it's cheaper, it gives you piece of mind, and they might even like working on their cars, like I do.
