UPDATE:
Decided to drive up to Yonkers from Brooklyn yesterday (followed closely by a friend in the event of something happening) and much to my surprise, the car made the entire trip without issue. That's 20 miles on the highway, through all gears, without any bogging whatsoever. Even at the toll plaza halfway through the trip, idling went without incident.
Once in Yonkers, I drove the car around all weekend: maybe 30 miles, give or take. Again, no issues.
Then, on my return trip this evening, upon reaching the toll plaza halfway into my trip, idling for the toll became an issue. I bogged at idle, and when I feathered the throttle to get some life back into the car, the response was flat. I turned the car off / on, and upon restarting, I was able to rev the car back into some life in order to make it through the toll. Then, for the rest of my trip, the car ran strong through all the gears.
ALSO WORTH NOTING: when the car was bogging at the toll plaza, I noticed a significant drop in oil pressure. What might this be symptomatic of?
Also - even though the car wasn't bogging like it had been, the car does have a bit of a sputter when trying to get rolling in first gear. (?)
Any input??
Thanks!