Discovered on Thursday when I had the car at work and came home with the A/C on (drove TO work with the heat on some), NOS parts may be unused originals but, they're still 40 years old. The NOS HVAC control I put in last year, leaks vacuum in MAX AC and OFF. Recirc still works, but that hiss gets irritating. Sigh...............
Discovered also, the car does not like what I figure is winter blend gas in the tank. Filled up back in the middle of April and the last tank full was the previous October, so I had half a tank of old winter blend with half a tank of fresh winter blend. Can you say spark knock? Any up hill stretch where you have to tip into the throttle and pingedy, pingedy. Then when I got home, shut the car off for about 10 minutes before putting it in the garage. Had to floor the throttle and crank, crank, crank before it started and you could smell the raw fuel. Carb boiled over and it's NEVER had that happen before, even at 90+ degrees much less the 72 it was yesterday afternoon. Guess the trick is to burn through it as soon as possible and get some summer blend in the tank along with some octane booster now that the only place you could get race fuel from the pump is just an empty building with a real estate sign out front.

At 9-10 mpg, shouldn't take long,,,,,,,,,,unfortunately, lol.