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Old 07-17-2014, 03:50 PM   #1
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Warm it up...or not?

Reading thru some posts on another forum, lotsa folks (youngn's mostly) start the car, and drive off immediately. I've watched people at work drive away when the starter barely disengaged. I always let the thing idle for a bit, less than a minute, before taking off...especially on a cold morning. Why hammer or stress a cold engine with cold thick lube, that hasn't had a chance to reach everywhere. What say you all?

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Old 07-17-2014, 04:02 PM   #2
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Lubricants are much better these days. I start up and give it a few seconds, but as far as I'm concerned once you've got oil pressure you're good to go.

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Old 07-17-2014, 04:22 PM   #3
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I still idle it for a minute before taking off. Good lubricants or not, I'm sure idling it is a bit better than just taking off.
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Old 07-17-2014, 04:34 PM   #4
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I still idle it for a minute before taking off. Good lubricants or not, I'm sure idling it is a bit better than just taking off.
Why are you sure? What logical basis do you use for that conclusion?

Should I Let My Car Warm Up Each Morning?

Blog Post | Do cars need to warm up, on cold winter mornings? | Car Talk

A relevant quote from the last link:
Quote:
RAY: But with modern cars, all you're doing with a long warm-up is
wasting gas, increasing pollution, raising the temperature of the
planet and making yourself 10 minutes late for your chiropractic
appointment. The proper procedure is to start the car. If it starts
and keeps running, put it in Drive and go. Go gently (don't back out
of your driveway and floor it right onto a highway entrance ramp),
because you'll be warming it up during your first few minutes of
driving, but DO drive it.
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Old 07-17-2014, 06:30 PM   #5
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I believe Mother Earth news has a bit of an agenda. I'm guessing they would like to see all cars go away! The engine just feels and sounds better with a short warm up, my opinion only
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Old 07-17-2014, 06:52 PM   #6
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Start her up and get going. Gas mileage sucks on the Jeep as it is. Unless you're leaving your Jeep sitting for days on end, the internals are still going to have a coat of oil on them. It only takes a second for oil to reach nominal pressure. However, I wouldn't be revving the snot out of the engine immediately after starting up. Not like that is a good practice anyway.
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Old 07-17-2014, 07:21 PM   #7
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It only takes a second for oil to reach nominal pressure. However, I wouldn't be revving the snot out of the engine immediately after starting up.
This. Start your jeep, plug in your iPod, select your song and take your time to check your surroundings before backing up and you're good to go
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Old 07-18-2014, 08:02 AM   #8
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The important thing is to get up to operating temperature as fast as possible. Sitting there idling is not going to do that. Make it do what it was designed to do as fast as possible. I just take it easy on the gas until that temperature is reached....wasting gas is not going to do anything but waste gas.
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Old 07-18-2014, 08:26 AM   #9
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Aha:
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This. Start your jeep, plug in your iPod,
It's seems to be a young people thing!
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Old 07-18-2014, 02:25 PM   #10
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This. Start your jeep, plug in your iPod, select your song and take your time to check your surroundings before backing up and you're good to go


priorities.

Start engine, set heater/AC, check gauges ok, check rear view/side mirrors, buckle seat belt...... 1-2 min leave.
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Old 07-18-2014, 05:18 PM   #11
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Modern fuel injection has no trouble running when cold. There's no fast idle cam or choke that needs to warm up and disengage. It takes maybe a couple of seconds for oil to be where it needs to be and it's designed to lubricate properly even when below zero.

Get in and go. Just don't hammer it until it warms up. Doing anything else just wastes gas.
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Old 07-18-2014, 06:06 PM   #12
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I let the tach tell me when to take off, when it dips below 1,000 rpms I go. I don't like the idea of engaging a clutch or slamming a transmission into drive when the engine is racing to save a few pennies per tank of gas. It takes less than a minute in the summer for the tach to dip below 1,000 and maybe 2 minutes or so during the winter. IMO its worth the wait.
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Old 07-18-2014, 06:13 PM   #13
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I let the tach tell me when to take off, when it dips below 1,000 rpms I go. I don't like the idea of engaging a clutch or slamming a transmission into drive when the engine is racing to save a few pennies per tank of gas. It takes less than a minute in the summer for the tach to dip below 1,000 and maybe 2 minutes or so during the winter. IMO its worth the wait.

This is exactly what I do.
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Old 07-18-2014, 07:00 PM   #14
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While it is in vogue to save the planet by not warming up your vehicle it is still a good practice to let the engine obtain full oil pressure and to give that engine time for that oil to circulate to all parts inside. This also applies to automatic transmissions.
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Old 07-18-2014, 07:42 PM   #15
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While it is in vogue to save the planet by not warming up your vehicle it is still a good practice to let the engine obtain full oil pressure and to give that engine time for that oil to circulate to all parts inside. This also applies to automatic transmissions.
Once your oil pressure is up everything inside is getting oil.
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Old 07-19-2014, 02:57 AM   #16
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Modern fuel systems and lubricants allow you to bypass most of the warmup in all but very cold weather (anything below 60deg F).
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Old 07-19-2014, 11:56 PM   #17
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I always let her idle for a minute even on a warm day. It's just what I've always done with every vehicle I've owned. Is it really necessary? Don't know, don't care.

Oh, and f**k the global warmists and their b.s.
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Old 07-20-2014, 05:54 AM   #18
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Once your oil pressure is up everything inside is getting oil.
Not always true the oil pressure will see oil pressure long before the camshaft lifters and rocker arms. The oil pressure sender is right off the oil pump mas soon as the pump spins it sees oil pressure. Cold oil doesn't move as fast as warmed up oil.

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