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Old 02-09-2018, 09:31 AM
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clubracer6
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Default Short distance driving

Some changes with my driving habits have me a little concerned about the well being of my 40th ae 996.

Last summer I only put about 2500 miles on it. Usually to work which was about 30 minutes and then weekend drives with my wife and daughter. We just moved our office closer to my house and now I have a 6 mile commute that takes around 12 to 15 minutes. On top of that we are expecting twin boys in May, so those weekend drives are going to go way down.

I worry that with the short commute the car will barely be warm enough to really exercise it before I get to the office.

I do go through cars quickly, but wouldn't mind keeping this one around another season or two, but I do worry about it not getting used enough and that the short drives will do more harm than good. I did just do the upgrade IMS and put a new battery in it which I do keep on a battery tender.

Am I being over paranoid?
Old 02-09-2018, 10:57 AM
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Mike Murphy
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Originally Posted by clubracer6
Some changes with my driving habits have me a little concerned about the well being of my 40th ae 996.

Last summer I only put about 2500 miles on it. Usually to work which was about 30 minutes and then weekend drives with my wife and daughter. We just moved our office closer to my house and now I have a 6 mile commute that takes around 12 to 15 minutes. On top of that we are expecting twin boys in May, so those weekend drives are going to go way down.

I worry that with the short commute the car will barely be warm enough to really exercise it before I get to the office.

I do go through cars quickly, but wouldn't mind keeping this one around another season or two, but I do worry about it not getting used enough and that the short drives will do more harm than good. I did just do the upgrade IMS and put a new battery in it which I do keep on a battery tender.

Am I being over paranoid?
Forst of all, congrats!

Secondly, 6 miles and 12-15 mins should be a perfect amount of time to get the engine up to temp, possibly even full running temperature. If you were doing half that distance and time, then yes, I would look for ways to extend your driving times, such as running household errands, etc.

The only thing you might want to do is change the oil more frequently, such as every 6-12 months, regardless of mileage.
Old 02-09-2018, 11:52 AM
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clubracer6
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Thanks Murphy! And letting it warm up a few minutes before I pull out of the garage is considered a no-no, right?
Old 02-09-2018, 11:57 AM
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Originally Posted by clubracer6
And letting it warm up a few minutes before I pull out of the garage is considered a no-no, right?
Correct.
Old 02-09-2018, 01:09 PM
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id be willing to bet that the engine oil is not up to temp yet with 6 miles of driving in 15 minutes. The only reason I say this is b/c the first time I changed my oil I drove about the distance and time and immediately drained the oil. It was warm, but was nowhere near operating temperature, which is the point so that the fuel in the oil (and any water) can vaporize off.
Old 02-09-2018, 02:49 PM
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808Bill
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Just take the long way to work and enjoy your car a little longer...
Old 02-09-2018, 02:51 PM
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Originally Posted by 808Bill
Just take the long way to work and enjoy your car a little longer...
thst would be fun to explain to my wife who is home with newborn twins!! ;-)
Old 02-09-2018, 04:55 PM
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Originally Posted by RngTrtl
id be willing to bet that the engine oil is not up to temp yet with 6 miles of driving in 15 minutes. The only reason I say this is b/c the first time I changed my oil I drove about the distance and time and immediately drained the oil. It was warm, but was nowhere near operating temperature, which is the point so that the fuel in the oil (and any water) can vaporize off.
True. I think it depends on ambient temps, if it’s stop and go, etc:

Take a look at temps someone posted on their 996 engine:



Old 02-09-2018, 09:02 PM
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My commute is 3.5 miles and I live in MN where lately it's been well below 0 F. Car never really gets upto temp. Good news is that it's a Porsche, a fine piece of German engineering and craftsmanship which can handle it.
Old 02-10-2018, 08:11 AM
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Originally Posted by Astro
My commute is 3.5 miles and I live in MN where lately it's been well below 0 F. Car never really gets upto temp. Good news is that it's a Porsche, a fine piece of German engineering and craftsmanship which can handle it.
I would like to think so, but do get freaked out by the cylinder bore scoring and chunking.
Old 02-10-2018, 08:35 AM
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6 miles in 15 minutes? You’re averaging 24 mph? Sell the 911 and buy a bicycle.

Any car will suffer from that kind of driving style. It just isn’t enough for the assemblies to get up to temperature and get rid of moisture. Is it going to be catastrophic in your short window of ownership, not likely.

Go stress about something else like finding a way to stretch the legs on you car and drive it like it was intended to be driven. Or how you are going to find time to drive it at all once those twins are born!

As an aside, I sold my 72 911 when my first daughter was born (16 years ago), and regret it to this day...

from the owners manual, interesting read:


Last edited by cds72911; 02-10-2018 at 09:51 AM.
Old 02-10-2018, 08:53 AM
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Thanks CDS - good advice! I do drive it hard every time out. I just like to bring it up to temp nicely and also back down.

I am going to sell my spec Miata for sure so maybe I can get a couple hours of track time here and there... We'll see a whole new world is coming.
Old 02-10-2018, 04:15 PM
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billh1963
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Originally Posted by Astro
My commute is 3.5 miles and I live in MN where lately it's been well below 0 F. Car never really gets upto temp. Good news is that it's a Porsche, a fine piece of German engineering and craftsmanship which can handle it.
I hope this was said in a sarcastic tone
Old 02-10-2018, 05:06 PM
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Nope. No sarcasm involved. Think about it. Porsche's are extremely well engineered and built. My wife's 2012 GMC(13 years newer) doesn't have nearly the build quality and has had a lot more things go wrong with it than my 99 C2 in a shorter period of time. Sure I would prefer to give the car more time to get upto temp, but I'm not going to lose sleep over it.
Old 02-10-2018, 05:17 PM
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Originally Posted by Astro
Nope. No sarcasm involved. Think about it. Porsche's are extremely well engineered and built. My wife's 2012 GMC(13 years newer) doesn't have nearly the build quality and has had a lot more things go wrong with it than my 99 C2 in a shorter period of time. Sure I would prefer to give the car more time to get upto temp, but I'm not going to lose sleep over it.
Generally Porsches are extremely well built. They failed with the M96 design though.


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