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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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Hemond
Champion Author Providence

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Message Posted: Apr 16, 2014 7:18:57 AM

Went to a late night movie last night, got out at midnight. Car was fogged badly due to cold front. (thanks global warming)

I had to sit idling for 5 minutes to clear windows. Even with AC on neither rear defogger nor defrosters were a match for the saturated air. Well worth the few mililiters of fuel used to ensure a clear windshield/rear window.
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contiki
Champion Author Ontario

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Message Posted: Apr 16, 2014 7:04:30 AM

Not needed...spring is here...........
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b899
Champion Author Connecticut

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Message Posted: Apr 15, 2014 8:14:02 AM

no
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hoopitup2000
All-Star Author Virginia

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Message Posted: Apr 15, 2014 7:01:05 AM

Start up & drive away. No rocket science.
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contiki
Champion Author Ontario

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Message Posted: Apr 15, 2014 6:36:16 AM

No warm up of vehicles required...............
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randy3116
All-Star Author Tennessee

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Message Posted: Apr 15, 2014 5:40:04 AM

have not tested but I do allow a short time for the car to warm up when it has been parked outside in coldtemps for a length of time
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twt
Champion Author Virginia Beach

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Message Posted: Apr 15, 2014 5:38:11 AM

A waste of gas.
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Tundralimited2009
Champion Author Dallas

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Message Posted: Apr 15, 2014 2:54:46 AM

None of the above
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ScottAdams5
Champion Author New York

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Message Posted: Apr 15, 2014 1:19:05 AM

No.
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aerosumit
Rookie Author New Jersey

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Message Posted: Apr 14, 2014 4:20:04 PM

no need
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HotRod10
Champion Author Wyoming

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Message Posted: Apr 14, 2014 9:40:42 AM

This morning I definitely let it warm up. It was 12F when I went out, with several inches of snow over a thick layer of ice. I let it run for about 30 minutes while I had some hot cocoa and breakfast, then I got in, hit the wipers and drove to work with the windows clear. When you're driving a small car on the interstate with semis, on ice, perfect visibility is a must. I play it safe and make sure the glass is warm so it doesn't fog. It only costs a quarter, but it would be worth it at ten times the price.
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contiki
Champion Author Ontario

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Message Posted: Apr 14, 2014 7:50:58 AM

With spring here in Ontario....no need to warm up our vehicles..........
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deant99
Champion Author Ontario

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Message Posted: Apr 13, 2014 8:45:38 PM

a minute or two, how ever long it takes to clear the windows
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Bus936
Champion Author Lexington

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Message Posted: Apr 13, 2014 9:32:04 AM

There is absolutely no need whatsoever to leave an idling vehicle to warm up, and in this area it is against the law to do so.
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contiki
Champion Author Ontario

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Message Posted: Apr 13, 2014 7:32:53 AM

No warm up of vehicles required...........
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contiki
Champion Author Ontario

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Message Posted: Apr 12, 2014 7:44:02 AM

No need to warm up our vehicles now that spring is here..............
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contiki
Champion Author Ontario

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Message Posted: Apr 11, 2014 7:20:42 AM

Now that spring is here .....no need to warm up the vehicles.........
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b899
Champion Author Connecticut

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Message Posted: Apr 9, 2014 8:17:38 AM

No
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jimmy544
Champion Author Boston

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Message Posted: Apr 9, 2014 7:22:36 AM

I installed a block heater on one car so that I did not need any warm up and I have no numbers yet but the car does seem to use less gas. You really need to leave it plugged in all night though.
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contiki
Champion Author Ontario

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Message Posted: Apr 9, 2014 7:07:10 AM

Spring......no need to warm up the vehicles................
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xbAG
Champion Author California

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Message Posted: Apr 8, 2014 8:55:06 PM

we don't have cold winter months, here on the central coast of CA.
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cujo1977
Champion Author Nashville

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Message Posted: Apr 8, 2014 4:19:43 PM

N
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santa_banta
Rookie Author San Jose

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Message Posted: Apr 8, 2014 10:42:41 AM

not needed in ca
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WEDDY
Champion Author Phoenix

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Message Posted: Apr 8, 2014 10:05:29 AM

No
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hoopitup2000
All-Star Author Virginia

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Message Posted: Apr 8, 2014 7:01:19 AM

Rarely . . . .
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contiki
Champion Author Ontario

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Message Posted: Apr 8, 2014 6:53:16 AM

No need to warm up the vehicles.........
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Wanda127
Champion Author Florida

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Message Posted: Apr 7, 2014 7:48:12 AM

I Only do this on cold winter days.

[Edited by: Wanda127 at 4/7/2014 7:48:56 AM EST]
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contiki
Champion Author Ontario

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Message Posted: Apr 7, 2014 6:46:26 AM

Spring is finally here in Ontario....no need to warm up the vehicles.......
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dontuknowOH
Champion Author Ohio

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Message Posted: Apr 6, 2014 3:37:56 PM

Recently only 30 seconds or less, my local, did a couple frosty days about one minute each, = better mileage and the long sleeve shirt days will be over soon. Where are those wild Mushrooms? Hiding......?
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navy1954
Veteran Author Alabama

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Message Posted: Apr 6, 2014 12:21:06 PM

Most people here, Alabama, warm up the engine to warm up the car. Waste of gas.
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goldmonk
Sophomore Author Toronto

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Message Posted: Apr 6, 2014 7:38:37 AM

no
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contiki
Champion Author Ontario

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Message Posted: Apr 6, 2014 7:28:43 AM

Ontario is warming up no need to warm up the vehicles.........
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cv
Champion Author Raleigh

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Message Posted: Apr 6, 2014 6:32:54 AM

Yes, around 30 seconds to allow the oil pressure to reach maximum.
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contiki
Champion Author Ontario

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Message Posted: Apr 5, 2014 7:22:19 AM

Warmer weather is now in Ontario.....no need to warm up the vehicles....
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goldmonk
Sophomore Author Toronto

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Message Posted: Apr 4, 2014 10:42:40 AM

only on winter
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contiki
Champion Author Ontario

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Message Posted: Apr 4, 2014 7:08:47 AM

No warm up needed this morning in Ontario............
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carinthuist
Champion Author San Francisco

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Message Posted: Apr 3, 2014 5:23:29 PM

yes
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HotRod10
Champion Author Wyoming

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Message Posted: Apr 3, 2014 10:51:14 AM

"Why wear out your starter and burn unnecessary gas?"

I'm still trying figure out how idling or not idling before driving has any effect on the starter. Idling instead of stopping and restarting the engine saves wear on the starter, but that's a whole different debate and argues in favor of idling.
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contiki
Champion Author Ontario

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Message Posted: Apr 3, 2014 8:17:03 AM

It was colder outside in Ontario than I thought it was this morning.....

Frosted up windows on both automobiles....warm up was needed to clear windows plus warmed up cars to start the day off.....
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contiki
Champion Author Ontario

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Message Posted: Apr 3, 2014 6:53:11 AM

With warmer weather now in Ontario...no need to warm up our vehicles...
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twt
Champion Author Virginia Beach

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Message Posted: Apr 3, 2014 4:48:22 AM

Your vehicle will warm up, within 2 miles, of driving. Why wear out your starter and burn unnecessary gas?
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dontuknowOH
Champion Author Ohio

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Message Posted: Apr 2, 2014 11:04:53 PM

The smaller size engine power-plants have the advantage on warm-up by either choice by the driver to idle or drive away. My reasoning is smaller means less coolant capacity systems and smaller engines work harder under loads than the larger ones. Everyone knows it takes more fuel energy to go big along with more weight involved with motion.

The other stuff like outside temps, speed, hammered performance, vehicle mechanical condition, terrain/traffic of travel is an effect also, Still.... engine Run time and size is my thoughts on costs, convenience often beats mileage, Just Me.....!(older guy).....
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contiki
Champion Author Ontario

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Message Posted: Apr 2, 2014 7:22:29 AM

Spring is here in Ontario....no need to warm up our vehicles......
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the1roadhog
Champion Author Atlanta

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Message Posted: Apr 1, 2014 8:41:10 AM

Drop the pedal and kick butt
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contiki
Champion Author Ontario

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Message Posted: Apr 1, 2014 6:59:13 AM

Now that spring is finally come to Ontario with warmer weather....

No need to warm up our vehicles...................
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Hemond
Champion Author Providence

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Message Posted: Mar 31, 2014 3:43:43 PM

You most certainly do not need to be in motion for a transmission to warm up. It does so at idle.

Perusing my owners manual, the factory recommends idling for a set time in order to warm the transmission. (A CVT in this case. They want it warmed to check fluid level)



[Edited by: Hemond at 3/31/2014 3:44:59 PM EST]
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HotRod10
Champion Author Wyoming

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Message Posted: Mar 31, 2014 9:46:16 AM

"You also have to consider the transmission and wheel bearings. Those only heat up through motion."

Once again, the wheel bearings are completely irrelevant. Idling doesn't change anything about the condition of the wheel bearings. No one ever said it did; that was never an argument for or against idling.

The transmission does warm up by idling in both manuals and automatics. The input shaft or torque converter spins when the engine spins, causing energy to be converted from mechanical energy to...you guessed it - heat.
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Shockjock1961
Champion Author Illinois

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Message Posted: Mar 31, 2014 9:36:31 AM

"Also, I like my fuel to be used for moving the vehicle forward. Anything else is a waste of dinosaurs"

So is heating your home rather then moving it around a "waste of dinosaurs" also?
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contiki
Champion Author Ontario

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Message Posted: Mar 31, 2014 7:24:09 AM

Spring is finally here in Ontario.....no need to warm up our vehicles....
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Hemond
Champion Author Providence

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Message Posted: Mar 29, 2014 10:57:23 AM

:::You also have to consider the transmission and wheel bearings. Those only heat up through motion.
:::


Both these points are inapplicable.

The transmission warms by idling- and fast. But it doesn't need to. It operates cold just as well. It produces waste heat as a consequence of friction. The transmission has a cooler to get rid of the waste heat. The wheel bearings operate in any temperature.
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