Not Logged In Log In   Sign Up   Points Leaders
Follow Us    2:29 PM

Message Forum - Read Message

Category: Fuel Economy > Topics Add to favorite topics   Post new topicPost New Topic
Author Topic: Warming up the car Back to Topics
JamCoope

Rookie Author
Maryland

Posts:13
Points:18,465
Joined:Jan 2011
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?
REPLIES (newest first) Post a Reply
Profile Pic
cra2006
Champion Author Washington DC

Posts:1,153
Points:260,305
Joined:Dec 2011
Message Posted: Apr 17, 2014 9:53:41 AM

The vehicle warms up fastest when your driving.
Profile Pic
Hemond
Champion Author Providence

Posts:10,973
Points:162,035
Joined:Oct 2006
Message Posted: Apr 17, 2014 8:11:19 AM

Windshield was encrusted with ice and snow yesterday morning . No choice but to warm it up. Pretty cold this morning too. YOu bet I'll be warming it up again.
Profile Pic
contiki
Champion Author Ontario

Posts:19,819
Points:852,965
Joined:Sep 2008
Message Posted: Apr 17, 2014 7:12:13 AM

No...spring is here..........
Profile Pic
Hemond
Champion Author Providence

Posts:10,973
Points:162,035
Joined:Oct 2006
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.
Profile Pic
contiki
Champion Author Ontario

Posts:19,819
Points:852,965
Joined:Sep 2008
Message Posted: Apr 16, 2014 7:04:30 AM

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

Posts:6,764
Points:1,889,165
Joined:Jul 2008
Message Posted: Apr 15, 2014 8:14:02 AM

no
Profile Pic
hoopitup2000
All-Star Author Virginia

Posts:719
Points:198,490
Joined:Jul 2013
Message Posted: Apr 15, 2014 7:01:05 AM

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

Posts:19,819
Points:852,965
Joined:Sep 2008
Message Posted: Apr 15, 2014 6:36:16 AM

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

Posts:908
Points:305,720
Joined:Oct 2012
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
Profile Pic
twt
Champion Author Virginia Beach

Posts:11,361
Points:1,317,635
Joined:Mar 2005
Message Posted: Apr 15, 2014 5:38:11 AM

A waste of gas.
Profile Pic
Tundralimited2009
Champion Author Dallas

Posts:40,402
Points:1,689,945
Joined:Feb 2009
Message Posted: Apr 15, 2014 2:54:46 AM

None of the above
Profile Pic
ScottAdams5
Champion Author New York

Posts:1,121
Points:419,135
Joined:Jan 2012
Message Posted: Apr 15, 2014 1:19:05 AM

No.
Profile Pic
aerosumit
Rookie Author New Jersey

Posts:39
Points:9,825
Joined:Apr 2014
Message Posted: Apr 14, 2014 4:20:04 PM

no need
Profile Pic
HotRod10
Champion Author Wyoming

Posts:3,154
Points:53,650
Joined:Oct 2006
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.
Profile Pic
contiki
Champion Author Ontario

Posts:19,819
Points:852,965
Joined:Sep 2008
Message Posted: Apr 14, 2014 7:50:58 AM

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

Posts:1,832
Points:72,885
Joined:Sep 2011
Message Posted: Apr 13, 2014 8:45:38 PM

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

Posts:18,096
Points:3,548,980
Joined:May 2004
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.
Profile Pic
contiki
Champion Author Ontario

Posts:19,819
Points:852,965
Joined:Sep 2008
Message Posted: Apr 13, 2014 7:32:53 AM

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

Posts:19,819
Points:852,965
Joined:Sep 2008
Message Posted: Apr 12, 2014 7:44:02 AM

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

Posts:19,819
Points:852,965
Joined:Sep 2008
Message Posted: Apr 11, 2014 7:20:42 AM

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

Posts:6,764
Points:1,889,165
Joined:Jul 2008
Message Posted: Apr 9, 2014 8:17:38 AM

No
Profile Pic
jimmy544
Champion Author Boston

Posts:6,304
Points:982,840
Joined:Feb 2011
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.
Profile Pic
contiki
Champion Author Ontario

Posts:19,819
Points:852,965
Joined:Sep 2008
Message Posted: Apr 9, 2014 7:07:10 AM

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

Posts:1,644
Points:489,460
Joined:Jan 2012
Message Posted: Apr 8, 2014 8:55:06 PM

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

Posts:1,277
Points:232,325
Joined:Apr 2013
Message Posted: Apr 8, 2014 4:19:43 PM

N
Profile Pic
santa_banta
Rookie Author San Jose

Posts:49
Points:14,365
Joined:Apr 2014
Message Posted: Apr 8, 2014 10:42:41 AM

not needed in ca
Profile Pic
WEDDY
Champion Author Phoenix

Posts:4,957
Points:1,364,620
Joined:Oct 2009
Message Posted: Apr 8, 2014 10:05:29 AM

No
Profile Pic
hoopitup2000
All-Star Author Virginia

Posts:719
Points:198,490
Joined:Jul 2013
Message Posted: Apr 8, 2014 7:01:19 AM

Rarely . . . .
Profile Pic
contiki
Champion Author Ontario

Posts:19,819
Points:852,965
Joined:Sep 2008
Message Posted: Apr 8, 2014 6:53:16 AM

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

Posts:4,008
Points:1,238,035
Joined:May 2010
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]
Profile Pic
contiki
Champion Author Ontario

Posts:19,819
Points:852,965
Joined:Sep 2008
Message Posted: Apr 7, 2014 6:46:26 AM

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

Posts:2,945
Points:51,605
Joined:Aug 2009
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......?
Profile Pic
navy1954
Veteran Author Alabama

Posts:479
Points:74,290
Joined:Aug 2013
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.
Profile Pic
goldmonk
Sophomore Author Toronto

Posts:137
Points:31,020
Joined:Mar 2014
Message Posted: Apr 6, 2014 7:38:37 AM

no
Profile Pic
contiki
Champion Author Ontario

Posts:19,819
Points:852,965
Joined:Sep 2008
Message Posted: Apr 6, 2014 7:28:43 AM

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

Posts:16,863
Points:3,595,780
Joined:Oct 2003
Message Posted: Apr 6, 2014 6:32:54 AM

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

Posts:19,819
Points:852,965
Joined:Sep 2008
Message Posted: Apr 5, 2014 7:22:19 AM

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

Posts:137
Points:31,020
Joined:Mar 2014
Message Posted: Apr 4, 2014 10:42:40 AM

only on winter
Profile Pic
contiki
Champion Author Ontario

Posts:19,819
Points:852,965
Joined:Sep 2008
Message Posted: Apr 4, 2014 7:08:47 AM

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

Posts:3,797
Points:620,650
Joined:Mar 2012
Message Posted: Apr 3, 2014 5:23:29 PM

yes
Profile Pic
HotRod10
Champion Author Wyoming

Posts:3,154
Points:53,650
Joined:Oct 2006
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.
Profile Pic
contiki
Champion Author Ontario

Posts:19,819
Points:852,965
Joined:Sep 2008
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.....
Profile Pic
contiki
Champion Author Ontario

Posts:19,819
Points:852,965
Joined:Sep 2008
Message Posted: Apr 3, 2014 6:53:11 AM

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

Posts:11,361
Points:1,317,635
Joined:Mar 2005
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?
Profile Pic
dontuknowOH
Champion Author Ohio

Posts:2,945
Points:51,605
Joined:Aug 2009
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).....
Profile Pic
contiki
Champion Author Ontario

Posts:19,819
Points:852,965
Joined:Sep 2008
Message Posted: Apr 2, 2014 7:22:29 AM

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

Posts:11,150
Points:2,374,100
Joined:Jun 2007
Message Posted: Apr 1, 2014 8:41:10 AM

Drop the pedal and kick butt
Profile Pic
contiki
Champion Author Ontario

Posts:19,819
Points:852,965
Joined:Sep 2008
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...................
Profile Pic
Hemond
Champion Author Providence

Posts:10,973
Points:162,035
Joined:Oct 2006
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]
Profile Pic
HotRod10
Champion Author Wyoming

Posts:3,154
Points:53,650
Joined:Oct 2006
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.
Post a reply Back to Topics