Recent Topics
Castrol Edge 5W50 vs Polaris PS4 & Amsoil 0W40
by revrnd
8 minutes 32 seconds ago
Craftsman 10-pc Metric Ratcheting Wrenches $29.96
by Warstud
41 minutes 56 seconds ago
2007 Toyota sienna suggestions
by ssneakster
Today at 05:35 PM
Fearless; the return of spring.
by simple_gifts
Today at 05:07 PM
Matt Snider teaches when to do a OC
by Pontual
Today at 04:18 PM
quality of spark
by james1950
Today at 03:36 PM
This was MEANT for the humor section!
by andrewg
Today at 12:22 PM
DexVI question
by DEWFPO
Today at 12:01 PM
This will be an interesting UOA....
by deven
Today at 10:31 AM
15% off any order from Zoro today only!
by Texan4Life
Today at 10:03 AM
Help on how NOT to park your car...
by mrsilv04
Today at 09:41 AM
BFG TA KO2 - new sizes released
by meep
Today at 09:12 AM
Newest Members
macdzich, rospaw, rwwhiz, Shaggykjb, handdancer
53329 Registered Users
Who's Online
138 registered (01rangerxl, AandPDan, abycat, 97tbird, 901Memphis, 72te27, 17 invisible), 1831 Guests and 181 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
53329 Members
66 Forums
228724 Topics
3654654 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Page 1 of 3 1 2 3 >
Topic Options
#3254391 - 01/20/14 07:52 PM best warm up patern in winther.
shDK Offline


Registered: 04/03/13
Posts: 574
Loc: Denmark
Hi all.

I am gonna share a discussion with you all that,s bin up here during the winther. Should you let your engine warm up a bit before driving?perhaps the time it takes to scrape off ice from the Windows. Or remove ice first and then just start and go?

The side on the start and drive made the following points.

1. The catalyst converter don,t work till the engine is warm and therefore will pollute more.

2. The engine doesn't warm up at idle but has to work before getting warm.

3. You will delute your engine oil with petrol due to blowby(or undercompression as it,s called here). And incomplete burning(don,t know how else to translate it)

4. Many modern engines has a pretty low oilpressure at idle, to reduce internal mechanical drag. And therefore. The wear is bigger.

The side that,s for letting the engine idle while scraping of ice.

1 the engine will mostly need between 15-20 sec before being fully lubricated(Probertly mostly with older thicker types of oil and engines.

2. The idle at cold start is often pretty high. An example is my Mazda that idles at 2000 rpm at cold start. Therefore it incomplete burning ain,t that big a problem.

3. In favor of safety it is best if the car is free of any moist of the Windows before ddriving. It is hard when you do the start and go way.

So. What do all the experts here say? This winther has bin really mild. But a normal whinther we will have night temps down to -15--20 celcius..

I apologize if my spelling is bad. I am sitting up at night, becouse I have the pneumonia. On both lungs. So now at is tea and rum time:-)

Have a nice day.
Søren



Edited by shDK (01/20/14 07:54 PM)

Top
#3254399 - 01/20/14 08:02 PM Re: best warm up patern in winther. [Re: shDK]
Donald Offline


Registered: 03/21/04
Posts: 14526
Loc: Upstate NY
I do not see a need for a long warm up, but warming up the car while one scrapes ice off the windows seems reasonable. But if its cold and no ice, then as soon as I see oil pressure in my gauge I will drive off.

Now if its below 5F my Jeep makes some odd engine noises, so I wait until the engine sounds normal (which might be a minute or two) then drive off.

And then there are the days I use the remote starter because I do not want to be cold.
_________________________
2001 Jeep Grand Cherokee Laredo 4.0 - PP & M1
1999 Dodge Ram 2500 w/Cummins - Rotella T6 & M1
Amsoil ATF in both vehicles & Magnefine filter.

Top
#3254403 - 01/20/14 08:06 PM Re: best warm up patern in winther. [Re: shDK]
Danno Offline


Registered: 10/07/12
Posts: 967
Loc: Northern Ontario, Canada
Hey shDK - Get better soon. You are warm this winter, we are cold, expecting -30C tonight without wind chill -42C with wind chill. Using 0W-20 M1 in the 3 cars parked outside. 2 cars parked inside get 5W-20/30 (warranty required)

I like your second option the best.

Top
#3254444 - 01/20/14 08:48 PM Re: best warm up patern in winther. [Re: shDK]
eljefino Offline


Registered: 06/15/03
Posts: 25680
Loc: ME
This keeps coming up. There are lots of threads from a couple weeks ago during the "Polar Vortex" on this very subject.

I nod to safety, particularly fogging up windows. So I idle, destructive as it may be. My goal is to counteract this with better maintenance, and not eliminate it. I own my car; it doesn't own me.

Top
#3254449 - 01/20/14 08:52 PM Re: best warm up patern in winther. [Re: shDK]
KB2008X Offline


Registered: 06/21/12
Posts: 509
Loc: St. Louis, MO.
My rule is that I'll wait five to 10 seconds in the summer and then drive. That works well until the freezing point and then I'll add another 5 seconds, when it gets near 0 Fahrenheit I'll wait maybe 30 seconds. Waiting longer really serves no purpose. There is nothing wrong with waiting longer for whatever reason, you may not gain much, but there is no harm.

The thing to keep in mind is that it's not only the engine that needs to have oil circulated throughout before driving off, regardless of temperature, but the transmission, power steering, drive axle, etc. The colder it is the longer it takes for fluids to circulate. So, once you're rolling, go easy for a few miles and then let it rip.

As for making allowances for "incomplete burning", or letting the converter warm up or pollution, don't worry about that. If you're really worried about pollution ride a bicycle.
_________________________
04 Town Car 4.6 5w20 FL820S
92 Ram D150 3.9 10w30 MO-090
03 S-10 4.3 5w30 Puro L10111
above on TropArtic Synthetic Blend
10 Toyota Camry - undecided

Top
#3254459 - 01/20/14 09:00 PM Re: best warm up patern in winther. [Re: shDK]
crazyoildude Online   content


Registered: 07/23/08
Posts: 6375
Loc: new jersey
at 20 degrees i let them warm up 5 to 7 minutes in the summer i let them warm up 2 minutes

Top
#3254471 - 01/20/14 09:14 PM Re: best warm up patern in winther. [Re: shDK]
sciphi Offline


Registered: 03/24/07
Posts: 8863
Loc: Upstate NY
Start it, put on the seatbelt, tune the radio, and go. That usually takes 10-15 seconds. The manual transmission isn't lubricated unless the car is moving, so I use a quality synthetic lube in there.
_________________________
2009 Honda Fit Sport
2012 Chevrolet Cruze Eco

Top
#3254483 - 01/20/14 09:27 PM Re: best warm up patern in winther. [Re: shDK]
gregk24 Online   content


Registered: 04/13/13
Posts: 3402
Loc: FL, USA
Just because the engine has oil pressure doesnt mean its lubricated. I let it idle until the rpm starts to drop down, then I put it in drive and take it easy until its warmed up.
_________________________
2006 Honda Accord 2.4 129K
M1 AFE 0w20
Fram Ultra

2005 Chevy Uplander 3.5 123K
VML SB 5w30
Fram Ultra

1991 Buick Park Avenue 3.8 115K
QSD 10w30
Fram TG

Top
#3254521 - 01/20/14 09:48 PM Re: best warm up patern in winther. [Re: shDK]
Doog Offline


Registered: 10/24/11
Posts: 4023
Loc: Ohio
below 20F I let it sit for 10 minutes. In Summer...30-45 seconds.
_________________________
The difference between a beer and your opinion is that I asked for a beer...

Top
#3254529 - 01/20/14 09:55 PM Re: best warm up patern in winther. [Re: shDK]
expat Offline


Registered: 05/12/09
Posts: 4137
Loc: Canada
I would say much depends on how hard you will work the engine once you get going.
I have the luxury that I have about 1 minutes driving before I need to even get up to 50kph.
So, (unless I need to scrape) I start and Go.

Top
#3254534 - 01/20/14 09:57 PM Re: best warm up patern in winther. [Re: shDK]
spasm3 Offline


Registered: 05/30/10
Posts: 4601
Loc: out there
I agree its better to start up and drive off leisurely. But I have wondered about situations in cold weather where you have to accelerate into traffic right off the bat. Are you better to let it run 5 minutes or just start up and go even if you are hitting say 4k rpm?


Edited by spasm3 (01/20/14 09:59 PM)
_________________________
13 elantra 32k penplat0w20
03 chevy avalanche64k m1 0-30
02 saturnsc1 60k qsud
01 saturnsc1 165k nextgenhm
93 ciera 69k 5w30mc5k
gz250 hdeo15w40

Top
#3254548 - 01/20/14 10:12 PM Re: best warm up patern in winther. [Re: crazyoildude]
Finz Offline


Registered: 06/06/13
Posts: 477
Loc: Northern NJ
Originally Posted By: crazyoildude
at 20 degrees i let them warm up 5 to 7 minutes in the summer i let them warm up 2 minutes


+1... Maybe it's a jersey thing.
_________________________
God Bless America... We really need it about now

06 Odyssey
06 Civic coupe
05 Accord 2.4 sedan
11 Civic 1.8 sedan
98 Accord 2.3 sedan

Top
#3254583 - 01/20/14 10:56 PM Re: best warm up patern in winther. [Re: gregk24]
gathermewool Offline


Registered: 01/09/09
Posts: 3823
Loc: New England
Originally Posted By: gregk24
Just because the engine has oil pressure doesnt mean its lubricated. I let it idle until the rpm starts to drop down, then I put it in drive and take it easy until its warmed up.


That's pretty much exactly what it means...

I like the thought mentioned above, that my vehicle serves me, not the other way around. When I'm by myself, the temperatures aren't ridiculously low, and/or the humidity doesn't mean instant-visibility-killing fog I clear the windows, if applicable, start, and drive off. Otherwise, I'll warm'er up for a minutes while clearing snow and setting the defroster on high, or remote-start and let'er warm up if that's what I want that time.
_________________________
14 Forester XT
GC 0W-30 + Subie blue filter
08 Civic LX (Auto)
VWB 5W-20 + Fram Ultra Guard filter

Top
#3254591 - 01/20/14 11:06 PM Re: best warm up patern in winther. [Re: shDK]
bvance554 Offline


Registered: 09/24/12
Posts: 1089
Loc: VA
When i was a kid back in the 80's my neighbor would wake me up in the morning 'warming up' his car. His 'warming up' consisted of starting the car and holding his foot on the accelerator revving it to ungodly rpm's for about two minutes, then drop it in drive and go. Even as a kid i didn't think this was the best method. For me, start it up, i can scrape the windows in about a minute, then drive it easy.

Top
#3254598 - 01/20/14 11:17 PM Re: best warm up patern in winther. [Re: shDK]
JHZR2 Offline



Registered: 12/14/02
Posts: 35261
Loc: New Jersey
Modern cars with properly working and heated O2 sensors should go closed loop pretty fast. How well/fast they get out of the algorithm holding idle a bit faster may be a different story. However if you can go closed loop, you don't have a ton to worry about.

So IMO the best thing from an engine longevity point of view is to use a block heater if equipped, then to start the car, let it stabilize for a few seconds to perhaps a minute at most, then go. Driving should always be gentle, but especially for the first 20 miles/minutes. However, that's the case in ANY weather. When combustion processes are over 1000 degrees, and cooling systems are designed to disperse all heat in >100 degree conditions, the difference in operation from a cold design day to a hot one is kind of small.

Top
Page 1 of 3 1 2 3 >