My apologies for opening up a can of worms that I was unaware had been previously explored. I appreciate, very much, the thoughts, facts, and opinions from both sides of the issue. For the driving I do, assuming there are no glitches in assembly and based upon reassurances here, I SHOULD be fine, but will definitely be putting my obdII BT dongle and tablet to good use when I get the car back, at least until I can get some idea of what my oil temps really are for my driving habits.
I've never sold a car because of engine trouble; 200k miles per vehicle is usually my minimum target and have come close to 300K a few times, but the reason for sale/donation/scrap was never due to an engine. It was always salt destruction or eventual need for a differently-purposed vehicle. Much as I enjoy driving this car, I'm not sure if this is one I'm going to hang on to as long as all of my other ones.
Anyone interested in a 71k mile 2013 FR-S w/ a brand new engine in near-perfect stock condition?
Not really serious at this point... I think...