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Topic Review (Newest First)
01-07-2012 02:02 PM
TreeClimber1 The concept of warming a car up, is primarily due to the carberators of yesteryear. A 'cold' car simply wouldn't run right until the air around the carb was of sufficient temp so the air/fuel mixture was right.

In today's fuel injection, the computer controls all of that, so it's much easier to run 'em cold.

Yes, there are some issues with wear and tear, but in my lowly opinion, you have more wear during startup due to lack of oil (until the oil pump starts) than due to heat expansion rates of dis-similar metals.

So simple common sense comes into play. Drive the car like you want it to last. Gentle is always better than abusive. Easy is always better than hard.

Now once they're up to operating temps, then have fun.
01-07-2012 12:43 PM
Umbra0101 I follow the rule BMW gives you, since I have never seen anything else in a car manual before. They say to not let it warm up, but to start driving mildly after only a few moments. This prevents carbon buildup. You can drive normally after it reaches OT on the road.

Works for me, but sometimes the cab is cold as hell. .
01-07-2012 12:37 PM
mjf232 My dealer told me to warm it up for a few minutes b4 driving. I dont think its necessary, but do it anyway. I guess I feel today's engines are better designed and made and think the "warm-up" is a dying practice. My reason for this thought is from my previous cars '05 X5 and '08 G8 where the manuels state theres no need to warm up the car.
01-02-2012 10:26 PM
calkid As an old Harley guy I never drive anything until it warms up a little. An aluminum piston and a steel bore expand at different rates, no matter what your driving.
01-02-2012 09:17 PM
DeFazio in the morning I start it and keep myself busy for a few minutes while it warms up. any other time I usually just sit in it for a minute or two after I start it just to get the engine warm
01-02-2012 09:08 PM
Wrangler06 i get in, start it, put it in 1st and go...have done that with all my vehicles lol
01-02-2012 09:00 PM
kjeeper10 Wait for the idle to settle and I'm
gone-keeping the rpms lower till the jeep reaches OT
01-02-2012 06:30 PM
jp2611 Once oil pressure is up and idle has settled in on the TJ I'm gone----The JK is even less time--'course it is always in her garage or already warmed up.
01-02-2012 06:28 PM
lensam I love how fast I get heat. The 95 deville took about 8 miles to finally get heat!!!
01-02-2012 06:25 PM
chucky cheese I usually go out and start my vehicles then let them run while I go take out the trash or pick up the trash cans ect. But one thing I never do is start a vehicle and shut it off without letting it warm up. Funny thing is my Ram van and wifes Pilot can sit and idle for minutes without the temp. gauges moving. My 2011 Jk temp. gauge moves after a few seconds.
01-02-2012 05:03 PM
wwch99tj I don't necessarily warm it up, but I don't exactly jump in and go either. I like to give it a min or so to get the oil pumping
01-02-2012 04:55 PM
John in Vegas Some might have different methods to warming up, but since everything else will be cold no matter how long you sit, I let it run long enough to belt up and adjust everything, then leave my complex very slow.
01-02-2012 04:48 PM
TrentJeep
Do you do this?

Hello everyone. I have an '02 and was wondering if it is neccesary to warm up engine before pulling off? I developed this habit due to my previous jeep being a '91 and I also had a '86 chevy silverado. Just wondering what you guys do.

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