Doesn't Colorado have more important things to worry about? I can't believe there is a law for this! Too funny.

Its important to allow the oil to circulate for few minutes before taking off. Also keep the RPMs down (I keep mine below 3k) until operating temperature comes up.

 

Porsche (via your owners manual) thinks otherwise. They tell you to start it and drive off and that you should not idle it to warm it up.

 

It's your engine do to it as you please. Porsche also thought 20k oil changes were a good idea.. On second thought I'll let the oil circulate for a few mins (especially important for cold temperatures) before going on my journey. Great peace of mind!

 

Thanks again for the input. My concern is in extremely cold weather, does it pay to warm up the car for 10 minutes every let's say 4 hours so that it turns on the next morning. I had my old Cayenne S parked one day in -40 degree weather in Northern WI and it literally froze. I had to get it towed into a heated garage and let it sit there for 30 minutes before it would crank up again. I don't have an engine block heater or battery blanket. I am considering buying an engine bay blanket for those extremely cold trips (like recently experienced) I do up north.

 

No. Not needed. A properly maintained Porsche, with the proper oil and a healthy battery will start in extreme cold Illinois weather.

 

Consider a block heater. Doing the idle of 10 min several times a day will pollute your oil and make things worse overall.

 

Porsche coolant if properly mixed is only good for freeze protection of around -30ºF. If it's colder than that, you may consider warming it up every few hours.

 

Ok, -40F is cold (assuming you are not referring to the "feels like -40").

If your are expecting much colder than -30F, why not run 60/40 antifreeze mix?

 

When extreme low temps are predicted, it's not a bad idea to keep the battery warm. When I went to school at NIU in Dekalb back in the Pleistocene Era, on below-zero nights I'd put a 100w light bulb next to the battery in my Ford and put a old comforter over it.

 

How would you do that on a Cayenne?

 

Back around 1980 they had a dipstick heater, shaped much like a dipstick and you stuck it in the dipstick tube, plugged into a 110v extension cord and it kept the oil warm.

At the time I had an old Chevy that I had to run 50 weight oil in, stopped to visit friends in Colo. on my way cross country. After sitting overnight it wouldn't turn over the next AM, they took me to an auto parts store to pick one of these up, after an hour or so it started right up. Any chance they still make them?

 

It need not be kept as warm as inside the house, just warmer than the subzero weather. I cant' say for sure that there's room in the Cayenne battery enclosure but I'd think one of these would fit.
http://www.oreillyauto.com/site/c/se...0651/C0076.oap

 

Biggest reason not to idle to let the car warm up: that only warms up the engine oil (and tranny a little).

Everything else needs warming up too. Wheel bearings, diffs, transfer cases, etc.

Starting the motor and driving gently until the engine oil is up to temp also gently warms everything else up as well. Idling until engine oil is up to temp gives a false sense of well-being.

 

...and running a rich mixture for as little time as possible reduces engine wear.

 

Gerry,

I don't think that the modern EFI engines are enriched when cold. I think that's just a throttle advance.