Got great news from the dealer. They did a coolant pressure test and found no issues at all!A what I believe to be a great update. Took the Mustang out Thursday evening for a nice easy drive. Drove about 25 miles or so and when I came back, it didn't seem like I smelled any coolant. MAYBE a slight hint.
Marked the reservoir and the fluid level didn't change at all.
This evening took it out again. Got on it a bit, not a lot but enough to break the tires loose. Got back to the garage and I don't smell any coolant.
So, as another poster said perhaps some had spilled during a coolant change and it's now burned off? Not sure but I'm super happy I didn't smell anything.
Still going to take it to the Ford dealer and have them do a pressure check to be sure. Also have a fog light out, which kind of pisses me off. I'll definitely be calling back the dealer once I get it replaced to have him help out on the cost.