6/9/19: Got Yoshi back from Ernest with an expensive bill because he took care of a lot of stuff. Mostly, preventative 170,000 mile, "well, while we're there we might as well..." sort of stuff:
Valve Cover Gaskets - OEM
Spark Plugs, Wires, and Tube Seals, Coil On Plug Boots - Denso, Denso...