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Discussion Starter · #1 ·
Been reading the Cayman Owner's Manual and came across an interesting note ("Stopping Engine", pg. 76):

"Do not stop engine immediately after hard or extended driving. Keep engine running at increased idle for about two minutes to prevent excessive heat build-up before turning off engine."

This is the first time I've heard something along these lines. I thought the engine compartment fan continues to run (if necessary) after the engine has stopped. Or is this referring to some other type of heat build-up?

With my previous non-Porsche cars, I've driven several hundred kilometres and simply turned off the engine as soon as I've arrived at my destination. Have I been unknowingly abusing my engines by doing this, or is this somehow specific to Porsches?

Also, I wonder what would be considered to be "extended driving". 50km? 100km? 1000km?

And what's "increased idle"? 1500rpm? 2500rpm? 7200rpm?? ;) So I'm supposed to sit for 2 minutes with my foot on the throttle in neutral after any long or spirited drive? :crazy: Am I completing misunderstanding this?

Can anyone shed some light on this?

Thanks!
 

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That's so the oil and water keep flowing.
Take some of the heat from the heads and pistons and cylinders and dissipate it.
And what's "increased idle"? 1500rpm? 2500rpm? 7200rpm?? ;)
So I'm supposed to sit for 2 minutes with my foot on the throttle in neutral after any long or spirited drive?
I would say 1500 to 2000. Sounds like good advice to me.
 

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So I'm supposed to sit for 2 minutes with my foot on the throttle in neutral after any long or spirited drive?
I think there is a difference between "long" or "extended" and "spirited".

Driving at a steady speed on the highway is not going to heat the car up like thrashing around from 1st to 3rd, then shutting off the engine and walking away.

Seems like a common sense thing to do. Drive the last mile home in a mellow fashion. A cool down lap if you are REALLY driving hard. Not just coming home off the freeway.

Ever heard of "putting a horse away wet" ? ;)

I usually drive around the "paddock" at the track for a minute or two after getting off. I almost never smoke on start up like I see other guys car's smoke when they roll in and shut down red hot.
 

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Discussion Starter · #5 ·
Thanks for the responses! I've always been very aware and careful about giving the engine plenty of time to warm up before pushing it - now I'll be a lot more conscious about cooling it out a little before walking away.
 

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I think there is a difference between "long" or "extended" and "spirited".

Driving at a steady speed on the highway is not going to heat the car up like thrashing around from 1st to 3rd, then shutting off the engine and walking away.

Seems like a common sense thing to do. Drive the last mile home in a mellow fashion. A cool down lap if you are REALLY driving hard. Not just coming home off the freeway.

Ever heard of "putting a horse away wet" ? ;)

I usually drive around the "paddock" at the track for a minute or two after getting off. I almost never smoke on start up like I see other guys car's smoke when they roll in and shut down red hot.
And it's also a good idea to put blocks under the tires instead of using the E-brake when the rotors are hot after a track run.
 
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