how do you like them? I've considered getting one for my truck, but the whole spring system scares me a little bit (spring pressure to keep it shut)
First -- to Kelwick -- thanks for reminding me to follow through with a blob of RTV sealant.
Interesting that this topic came up in the OP's catastrophic loss saga.
I have a new Fumoto 106N in a box of extra new parts out in the garage, and I might have used it. I'd recommend them.
Even so, I also tried out the Valvo-Max drain valve. It uses the same ball-valve design as the Fumoto, but doesn't require fiddling with the little switch to open it. Instead, you just screw in a fitting with a 1-foot plastic hose on it, stick the hose in waste-oil container, and twist it clockwise all the way. Just before it won't turn anymore, it drains.
I discovered leftover mistakes from my "Mechanic from Hell" experience last summer. In addition to the serial cluster-f*** of damage he did (now corrected), he also failed to reconnect the fuel-pressure-control-valve to the intake manifold, and he broke the PCV valve in half. I had suddenly decided a couple weeks ago to test my gas-mileage -- way too low for that car -- and found this mechanic-damage. My oil was contaminated with gasoline combustion by-products. Lucky I'd only run it for at most 2,000 miles since the Mechanic from Hell encounter.
First time I got to test the Valvo-Max, and I was totally pleased. It has a screw-on cap with a rubber gasket. Fumoto doesn't have this feature.
But like I said, I'd recommend either one.
It appears that the OP also crossed paths with a Mechanic from Hell.
As for the OP, I could say that if you like the Hyundai and it has "other" longevity features and reputation, the engine replacement could cost $3,000 to $5,000 (and I solicit any corrections to this guess). It's a 2011 model. Replacing it with new -- or newer -- will likely cost you twice that amount, and maybe a factor of three or four.
YOU have the repair history on the car. YOU should know what sub-systems are ending their expected-life cycle. Buying another used vehicle carries more uncertainties.
So you could consider an engine replacement -- by some shop or dealership who know what they're doing. I've had two cars for which I'd invested in a remanufactured engine or a comprehensive over-haul, and they ran better than the car did when new.
It's a hefty piece of change -- I grant you that . . . .