"glad that wasnt typical"
I'm not so sure about that. I think that in cold climate the amount of smoke a tank emits can be staggering.
I've actually seen it happen. Once in army our signals group had a T72 tank crew in same tent and we had an oppotunity to observe the start up procedure in the morning. We were camped in a small valley and at the time they had the tank running the valley seemed full of white haze that the tank was emitting during start-up.
And why is that relevant:
Wiki: The basic T-72 is relatively underpowered, with a 780 hp (580 kW) supercharged version of the basic 500 hp (370 kW) V-12 diesel engine block originally designed for the WWII T-34. 
-C+