Update:
Decided to drive the hell out of the car since the tech advised draining the tank. Not sure the logic behind this thought - but I figured if I can kill the fuel by driving it (without somehow breaking down) and get fresh diesel in the tank - then it’ll help eliminate the possibility of having bad diesel.
(Not sure how bad diesel can only cause starting issues but otherwise drive smoothly...?..)

So I drive for about 4 hours, off and on w/long cranks in between - didn’t have any issues otherwise. Got to about where the reading says I have 50 miles till empty and stoped at a gas station.
Didn’t want to fill her up, so only put 30 bucks in.
Started the car - fired right up - but had a hunting idle and ran rough for about 7-10 seconds. Since then, I’ve maybe driven it 60 miles with 4-5 startups.

Each startup - Zero issues. Cranks like the day I bought her. No SES light.

Again, not sure how bad diesel can sometime only cause bad startups but I’m guessing that’s exactly what happened.
(Knock-on-wood) but thankfully it wasn’t the HPFP or something else expensive.


Merry Christmas