I had some time yesterday so I decided to start the Panama and let the engine warm up. Haven't started it for a month. The battery was low, but it started right up.
Pulled the car out of the garage and found a new spot of liquid on the ground. Yay! So now I get to add a radiator leak to the power steering leak, rear main seal leak, and transmission selector shaft leak. I can't tell for sure, but I think it's leaking at the junction of the upper tank and fins. Never had a leak anywhere on the system before, so this is a surprise.
Overall the engine sounded okay while running. The tank is full with brand-new ethanol free gas, and I put in Sta-bil and some Marvel to run through the engine. The MMO really seems to help quiet down the valves. I need to do a valve adjustment at some point.
The fuel/vacuum pump is super loud though. The camera in the video doesn't do a great job picking it up, but the pump sound far overpowers everything else. It's like a hollow "pump' sound. No idea if that's normal or not. I haven't been around too many cars that have original engines, so I haven't been able to hear other fuel pumps. When the engine is warm, it is overall pretty quiet but the pump can be heard from outside the car, inside the car, and from a mile away.