Originally Posted by StanleyD
...its not good for an automatic to be pushed/pulled and roll (Hence EOC) without the engine being on because your fluids responsible for lubing the tranny are not flowing... What is everyone else's take on this?
I can toss in some info from far left field.
Due to odd (and I hope temporary) circumstances, my SG is currently reporting transmission temperature instead of engine temperature.
Monday I drove about 150 miles with a clear sky and afternoon temperatures in the high 90s. The AT would normally run about 215F to 225F. However, during NICE-ON glides it would quickly climb to 230F or 235F. IIRC the highest temperature logged for the day was 240F.
I figure this is because the pump is circulating the transmission fluid more slowly at engine idle so heat has more of a chance to build up. No idea where the AT temperature sensor is located though, so that theory could be bogus. Regardless, it's another factor making me uneasy about neutral coasting in my car.
At any rate, on a VW Cabrio (Golf III platform) at least, even gliding in neutral with the engine on likely adds extra stress. I can only imagine what would happen with the engine off when there's no flow at all. (I can only imagine 'cuz I ain't tryin' it.
Except for 20 foot gravity starts from a parking space or the last five feet rolling into position after keying off.)