on Tue May 22 17:18:07 2018, in response to Re: NYCTA Bus Roster 1/1/73, posted by MainR3664 on Tue May 22 08:10:55 2018.
I never turn my A/C off , even when climbing hills with my 2014 Nissan, 4 cylinder. The engines are much better (fuel Injection , etc.) than in 1999 , yours was probably a twin SU-style side-draft carburetor style.:)