Quote:
Originally posted by Dave Stones
yup left-handed screwdrivers arent made so engines dont overheat 
yeh seriously heaters are on to stop the engines overheating... ive never understood why though. any bus engineers care to enlighten me? why is he engine heating system piped into the busheating system? seems silly... maybe im just naive...
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The heat will come from the engine cooling system (or some other hot part of the engine; I don't really know). However, the point is that it is
not a separate heating system. You are therefore taking heat from the engine and pumping it into the rest of the bus; just like a fridge as it were (a vision of the driver sitting there with his winter woolies on has just passed through my mind). As long as the system pumping the hot air into the bus does not produce more heat than is being pumped away, the engine will be being cooled.