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Old 12-01-2008, 10:09 PM
DawgBone DawgBone is offline
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Quote:
Originally Posted by pureflames
BMW E70 manual says not to start car and let idle in order to warm up....instead, just start out driving. Perhaps a stupid question, but why?
That wouod be the first for me... and I've always give good time for my vehicles to warm up...

Granted, maybe this E70 has a way of reducing crankcase pressure from thick oil(temps) and preventing it from pushing it out of the seals

I know my M pretty much warns you with the tach... once it's at operating temps, the dummy lights go off, and pretty much tell me nail down on the throttle...as well as an oil temp gauge...

But I always let my vehicles reach near 200F temps, before I give them normal driving throttle... sometimes even let them get to operating temps when I can... of course, prolonged idleing/warm up is bad depending...

I have a hobby of RC nitro truck racing...and with the nitro engine's design, it is better to get the motor to operating temps fast...which usually means giving throttle... But because the cylinder exspands as it gets hot, and the quicker you can get there, the less piston/cylinder wear.... But this is a piston/sleeve design as well as pre0mixed 2 stroke.. so bringing lube to the top of the engine and crankcase pressure is non-issue...
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