Re: Temperature Gauges
tranny cool down instructions are:
put transmission in neutral and let engine run at idle or slightly above.
The problem with shutting off the bus when the engine, or the trans is hot is that even though the temperature of the fluid is really hot where your temp probe is, the fluid is even hotter someplace else inside the engine/trans. In an engine, The cylinder heads may be approaching several hundred degrees, and having coolant flow over these metal parts keeps them from getting even hotter. Shutting off the engine can cause non-circulating water to stay in contact with metal that is several hundred degrees over heating the coolant, and possibly damaging the metal parts.
not to mention your turbo! Turbo's really like to cool down for a few mins before shutting the engine off, especially when you pull off at a rest area!
the trans is a lot like the engine, where you can have trans fluid contacting really hot metal parts. The best way to cool the metal parts is to have fluid constantly circulating.
Quis custodiet ipsos custodes (who will watch the watchmen?)