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Author Topic: Warming up the car Back to Topics
JamCoope

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Maryland

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Message Posted: Jan 26, 2011 10:21:52 AM

Most people agree that cars run more economically once they're warmed up... especially in the cold winter months.

Here's a question: has anyone tested whether it is more economical to let your car warm up by idling in the driveway, or by just letting warm up as you drive?
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cv
Champion Author Raleigh

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Message Posted: Dec 18, 2014 6:32:12 AM

After starting my truck, I move off after 30 seconds just to let the oil pressure reach maximum.
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StArrow68
Champion Author Oakland

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Message Posted: Dec 18, 2014 5:15:52 AM

It's all in the title, it has nothing to do with any need to warm the engine. Enjoy what you drive.
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twt
Champion Author Virginia Beach

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Message Posted: Dec 18, 2014 4:09:21 AM

A waste of fuel. The car will warm up, after five minutes of driving.
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Hemond
Champion Author Providence

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Message Posted: Dec 17, 2014 4:54:07 PM

QUOTE ::::it is a waist of fuel to let car sit and idle when dead cold. if it is real cold then maybe let run a minute but to idle for 5 minutes is not good for the engine. hemond: it uses a lot motor than a teaspoon when started and sitting at idle when cold….

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~



A typical 2.0 l engine uses 0.18gal/hour at idle. This is 1.92 ounces in a 5 minute warmup. Inconsequential. A Nyquil cup is 1 ounce so 2 Nyquil cups of gas is what a basic 4 cylinder engine uses.

Secondly, back up your statement that idling is not good for the engine. That is hogwash. Engines are designed to idle. It is normal to idle. Both cold and warm. Idling is a a design state that engineers test at length. If it was bad to idle, the manufacturer's engineering departments would advise against it. I call BS on your statement.
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Mikeyy1960
Veteran Author Cape Coral

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Message Posted: Dec 17, 2014 3:47:54 PM

it is a waist of fuel to let car sit and idle when dead cold. if it is real cold then maybe let run a minute but to idle for 5 minutes is not good for the engine. hemond: it uses a lot motor than a teaspoon when started and sitting at idle when cold….
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hoopitup2000
Champion Author Virginia

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Message Posted: Dec 17, 2014 6:36:03 AM

No drama needed. Start it up & go.
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Hemond
Champion Author Providence

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Message Posted: Dec 16, 2014 4:26:01 PM

QUOTE ::::MSN article today on why you don't do excessive wam up.::::

With no link, its impossible to discuss this MSN article. While attempting to find the referenced link, I did find plenty of similar articles. Mostly nonsense news puff pieces meant to capture eyeballs. Following the overused, tired out format of "X Things You Should Never Do.....

Here's a typical generic example.

Numbers #2 thru #5 are completely bogus and #1 contradicts #3. THese puff pieces are total nonsense. I'll wager the mysterious MSN piece fits right in with this bush league journalism.


[Edited by: Hemond at 12/16/2014 4:28:26 PM EST]
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Hemond
Champion Author Providence

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Message Posted: Dec 16, 2014 4:02:54 PM

I always make a dash outside to startup and let it warm. I see no reason to sit in a cold car.

Plus gas is plentiful, no reason to spaz out over warming it up. Using a teaspoon of gas while the engine idles 5 minutes is of no consequence.
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redfish67
Champion Author Dallas

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Message Posted: Dec 16, 2014 10:22:07 AM

not necessary
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b899
Champion Author Connecticut

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Message Posted: Dec 16, 2014 8:01:27 AM

no
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StArrow68
Champion Author Oakland

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Message Posted: Dec 15, 2014 11:17:25 AM

MSN article today on why you don't do excessive wam up.
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hoopitup2000
Champion Author Virginia

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Message Posted: Dec 15, 2014 7:51:53 AM

Many long time drivers just can't shake this wasteful habit. They like to keep living in the past.
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contiki
Champion Author Ontario

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Message Posted: Dec 14, 2014 7:18:51 AM

We like to warm up our vehicles in the cold weather....
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dontuknowOH
Champion Author Ohio

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Message Posted: Dec 14, 2014 12:20:00 AM

I had an old friend at work, he complained about his truck being noisy after a cold start-up. He changed his own oil/filter on a 360 cu in. V/8 He had bought new.

After about 20K miles He said it sounded like rod bearings rattling on a start-up. He always used a filter different than the first few OEM types. I mentioned He should go back to the factory designed one. Maybe at least change to another brand.

The ones He was using were at times bleeding off prime capacity, due to valve (internal) design/filter positioning.
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hoopitup2000
Champion Author Virginia

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Message Posted: Dec 12, 2014 6:46:14 AM

Some people insist on warming up their cars just because it's cold out. No frost, no fog on the windows, just cold. They just don't get it. The cabin will warm up MUCH faster if the car is actually moving instead of just sitting there idling. What REALLY gets me is people who warm up their cars when it's warm outside. Wish I had that much free time.
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vabites
Champion Author Florida

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Message Posted: Dec 11, 2014 9:27:33 AM

I will say, my 2002 vehicle has always made a lot of valve train noise when you press the accelerator for the first minute or two when the engine is cool. I think its a known problem with the 5.3 liters from that time frame. I can either let it idle in my driveway/garage for about 90 seconds or idle in gear and take the longer route out of my neighborhood, either way works for me. It actually seems worse on new oil too which is bizarre to me.

[Edited by: vabites at 12/11/2014 9:27:58 AM EST]
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hoopitup2000
Champion Author Virginia

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Message Posted: Dec 11, 2014 6:37:18 AM

No, the car warms ups MUCH faster if moving. Case in point-Started car with a water temperature of 35°F. Took only 5 1/2 minutes to get the water temp up to 180°F.
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eyegotgas2
Champion Author British Columbia

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Message Posted: Dec 11, 2014 4:05:19 AM

Don't know but if the car is icy I will be warming it up
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luvmyburgi
Champion Author Ohio

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Message Posted: Dec 10, 2014 9:27:33 PM

No
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Foolingurself
Rookie Author California

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Message Posted: Dec 10, 2014 3:27:37 PM

Start and drive.
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b899
Champion Author Connecticut

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Message Posted: Dec 10, 2014 7:46:06 AM

no
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silverG
Champion Author New Jersey

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Message Posted: Dec 7, 2014 9:03:40 AM

not really
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b899
Champion Author Connecticut

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Message Posted: Dec 7, 2014 8:55:01 AM

no
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JohnCur
Sophomore Author New Jersey

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Message Posted: Dec 6, 2014 9:35:42 AM

when below 25F. or 26F. for 4 or 5 minutes for xmission's sake
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PaylessKY
Champion Author Kentucky

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Message Posted: Dec 6, 2014 8:46:50 AM

The only reason I warm the car is to clear the windows.
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GasMiser718
Champion Author Detroit

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Message Posted: Dec 6, 2014 1:03:19 AM

I will start it so it gets the windows unfrosted....
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Garwoodv6
Rookie Author Houston

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Message Posted: Dec 5, 2014 11:15:20 AM

15 seconds before moving, and another 15 seconds at idle speed while I pull out to get the oil everywhere it needs to be... more if the windows are fogged or iced over. That's about it.
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jay93LA
Champion Author New Orleans

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Message Posted: Dec 5, 2014 8:22:11 AM

not usually
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b899
Champion Author Connecticut

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Message Posted: Dec 5, 2014 7:58:58 AM

no
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contiki
Champion Author Ontario

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Message Posted: Dec 5, 2014 6:22:14 AM

The cold weather is here in Ontario......

We now warm up our vehicles each morning.......
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Shockjock1961
Champion Author Illinois

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Message Posted: Dec 2, 2014 7:24:20 PM

"My windows in a variety of cars dont fog..of course we have real winter here, not the coolish temps you have."

Do you want a medal or a chest to pin it on? Who cares if you live on the edge of a Tundra?

"Also, apparently it is mouth breathers that have problems with foggy windows"

As noted before, you have no clue what my, or anyone elses for that matter, situation is.

I'll keep warming my car up in cold weather for legal and safety reasons...
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gougedQC
Champion Author Montreal

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Message Posted: Dec 2, 2014 6:31:08 PM

PS.. shockjock, no I do not know what your situation is.. whats your problem?..

My windows in a variety of cars dont fog..of course we have real winter here, not the coolish temps you have.

Also, apparently it is mouth breathers that have problems with foggy windows,
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gougedQC
Champion Author Montreal

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Message Posted: Dec 2, 2014 6:23:31 PM

Well, below freezing most of the time now... So I dress warmly, go out start the car, buckle up and drive away...absolutely zero mechanical need to "warm the engine" or the oil.. Because its an old vehicle, the auto trans could use a little warming but that only happens as i drive so... its always start and go..no problems, no unnecessary pollution.
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poetdog73
Champion Author Toledo

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Message Posted: Dec 2, 2014 6:40:44 AM

winter time yes......
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Jackson126
All-Star Author Virginia

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Message Posted: Dec 2, 2014 5:53:27 AM

a little in the winter
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Shockjock1961
Champion Author Illinois

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Message Posted: Dec 1, 2014 12:48:36 PM

"Dont know what your situation is"

Obviously a true statement...
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b899
Champion Author Connecticut

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Message Posted: Dec 1, 2014 9:39:06 AM

no
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gougedQC
Champion Author Montreal

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Message Posted: Nov 28, 2014 6:29:32 PM

Dont know what your situation is, but my windows in several cars dont fog, with the defrost set from a dead cold start at well below freezing.. and if they did, crack the window open for a minute and clears up.

Many different cars over the years, none, Hondas, cheve fords, cars, vans.. had a fogging issue.

The only time it fogs if a little snow is left at the bottom of the windshield outside..then that area will not un-fog until the snow is either blown off or wiped off by my hand
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hoopitup2000
Champion Author Virginia

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Message Posted: Nov 28, 2014 11:39:19 AM

Dress for the weather & then there is no need to warm up the engine in all but extreme conditions.
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Shockjock1961
Champion Author Illinois

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Message Posted: Nov 28, 2014 11:00:00 AM

"shcokjock- what safety and legal reasons?"

Driving with obstructed windows. Sorry, I won't drive unless the air from the defroster is warm enough to keep the windows from fogging over.
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b899
Champion Author Connecticut

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Message Posted: Nov 28, 2014 9:17:58 AM

no
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dontuknowOH
Champion Author Ohio

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Message Posted: Nov 25, 2014 8:43:58 AM

I can only say that My vehicle never is put into drive mode during Winter start offs with issue problems, until I can visual see in all directions that have visible glass windows, including side mirrors must be clear.

Next is all exterior lights cleared for obvious reasons, even ice formed at the base of any communication antennas can cause loss of signal transmitted/received(shorts the signal)by hampering electric flow. Like how is your Sun roof doing also?!!

If your wipers are stuck, frozen down and then while driving, your responsible, right? Better check......!
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badbobKY
All-Star Author Lexington

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Message Posted: Nov 25, 2014 7:43:06 AM

winter time
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OilerFan
Champion Author Tulsa

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Message Posted: Nov 25, 2014 7:29:42 AM

I just run the engine long enough for the oil to warm so that it flows well within the engine. That's the whole purpose of "warming" the car.
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cv
Champion Author Raleigh

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Message Posted: Nov 25, 2014 6:29:40 AM

I just idle a short period before moving on.
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twt
Champion Author Virginia Beach

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Message Posted: Nov 25, 2014 5:18:36 AM

A waste of time and gas. It takes about three minutes, for your car to heat up, while driving.
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gougedQC
Champion Author Montreal

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Message Posted: Nov 24, 2014 5:58:16 AM

shcokjock- what safety and legal reasons? The only possible thing is windshield clearing.. and that you can do from the outside without the engine running and inside, while driving, leave the window open a bit, or drive with the defrost on cold.
Theoretically you/re not goint outside in below freezing weather with just a shirt on... theoretically youre dressed for the cold, therefore an extra five minutes driving toward your destination while the fluid heats up shouldnt bother you.
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manabanana1204
Rookie Author New York

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Message Posted: Nov 23, 2014 7:45:35 PM

yes
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b899
Champion Author Connecticut

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Message Posted: Nov 23, 2014 9:11:41 AM

no
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Shockjock1961
Champion Author Illinois

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Message Posted: Nov 21, 2014 9:17:20 AM

"There is no repeat no technological reason to let your engine idle uselessly"

Possibly, but there are safety an legal reasons to allow your car to warm up...
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