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Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: MrNoBody
Date: February 09, 2019 11:23AM
Poll
Do You 'Warm Up' Your Vehicle?
This poll has expired. Voting is no longer possible.
55 votes were received.
Yes 17
 
31%
No 36
 
65%
I drive a diesel, it has to warm up. 1
 
2%
GET OFF MY LAWN, I drive a carburetorated CLUNKER! 1
 
2%



Reading cbelt3's post got me thinking of another topic concerning "Modern Vehicles".

Warming up a vehicle in cold weather. Road & Track says no!
It takes longer, wastes fuel, and actually increases the wear and tear on your engine.
Watch for yourself and let a real engineer explain why you should stop warming up your car.

edit: doh, that should be "carbureted"!



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Edited 1 time(s). Last edit at 02/09/2019 11:30AM by MrNoBody.
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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: deckeda
Date: February 09, 2019 11:34AM
Cars have been designed to quickly warm up since EFI became the norm. The only exception I make is unrelated to the engine; if the car has been left outside and clearing ice would be a hassle or still take a lot of time.
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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: deckeda
Date: February 09, 2019 11:36AM
There’s a Shell advertisement from the 1970s ... shows still images of two cars (magazine ad.) One is idling and the other is turned off.

One car gets about 13MPG and the other ones gets 0MPG. Even I can do that math.
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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: Filliam H. Muffman
Date: February 09, 2019 11:37AM
I let my car run long enough that it just starts to fully recognize that it's running and starting to warm up, 15 seconds to maybe 40 seconds. I try not to run it over half the redline until the water temp gets over 160 F.



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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: Winston
Date: February 09, 2019 11:49AM
My wife likes heated seat to warm up. I use them occasionally, but usually just wait for the car's heater to start working.
Then I warm up. winking smiley


We don't live in a super cold climate (Atlanta), so I really don't worry about driving a car as soon as it's started. But I do try not to stress the engine until the temp gauge shows it's in the normal operating range.

As deckeda suggested, times I've been where it's snowy I'll sometime start a car and let it sit for a few minutes to get the defrosters going before driving.


Good luck.

- Winston



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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: modelamac
Date: February 09, 2019 11:50AM
Don't waste the fuel unless the windows are covered with ice. Just start out slowly and don't rev the engine until the temp gauge starts to move. Stay under 50 mph for the first mile or so. You want the oil to be warm enough to circulate everywhere it should before you put any real strain on the engine.

On startup, the only lubricant available is the film left by the oil when it drained into the oil pan after it last stopped.



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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: SDGuy
Date: February 09, 2019 11:58AM
Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: Yoyodyne ArtWorks
Date: February 09, 2019 12:11PM
30 seconds or so to get the oil completely circulated through the engine after the car has been sitting overnight (my Golf has a fast idle that runs at 1400 rpm or so for about that long), and then I’m off. I pay close attention to the oil temperature (not the coolant temp) and wait until the oil hits at least 160-180 degrees before any hard acceleration.



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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: Buzz
Date: February 09, 2019 12:38PM
In the colder weather, yes. When it's warmer, or hot, not so much.
==
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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: jdc
Date: February 09, 2019 01:03PM
Quote
Buzz
In the colder weather, yes. When it's warmer, or hot, not so much.
==

Yeah, prob a regional thing. Coldest it ever gets here is 30ish, and thats in the dead of night early morning only for a few days out of the year.

meh.



----


Edited 999 time(s). Last edit at 12:08PM by jdc.
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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: TLB
Date: February 09, 2019 01:10PM
If the windshield is not easily scraped, yes. But not for the engine, it is so the defroster can help me out.
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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: Thrift Store Scott
Date: February 09, 2019 01:48PM
Quote
TLB
If the windshield is not easily scraped, yes. But not for the engine, it is so the defroster can help me out.

^ This. My most recent car before the current one was my first-and-only "fastback", so between the extra-large rear window that was a magnet for even the lightest frost and and an equally large windshield, that was a lot of glass area to have to scrape without a bit of thermal assistance.

I was spoiled by the car prior to that one because it was a station wagon with an air deflector on the rear. Although I must have at some point, in 13 years of driving it I don't recall having to scrape the back window on that car even once. It was, however, carbureted, so I had the choice of either stumbling and balking at every red light or letting it warm up a bit before setting off.



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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: DinerDave
Date: February 09, 2019 02:33PM
During bad or cold weather I usually start it, clear the snow/ice off car as needed, then get in and go.
I always try real hard to not go over 2,000 RPM's for the first couple of minutes driving when cold. That's easy going to work in the morning, at 4:45 AM there is very little traffic on my road.

Dave



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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: C(-)ris
Date: February 09, 2019 03:43PM
Only reason I remote start is to make the interior the temperature I want. Has nothing to do with letting the engine get up to operating temp before moving.



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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: N-OS X-tasy!
Date: February 09, 2019 04:00PM
Lubrication requirements for the valve train in my QX70 (and the G37 before it -- same engine) are more stringent than is typical, so after starting the engine I let it run for about ten seconds before taking off to give the oil enough time to provide sufficient lubrication. I can literally hear when it is ready to go.



It is what it is.



Edited 2 time(s). Last edit at 02/09/2019 04:13PM by N-OS X-tasy!.
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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: RAMd®d
Date: February 09, 2019 04:22PM
30sec and easy driving until the temperature gauge needle gets off the peg.

I also keep the fan and heat off, until the needle moves.

I've done this with my FI car and bike.

Previously, with all my carbureted cars, I let them warm until they were close to the fast idle dropping. Then I'd ease on down the road until the needle was off the peg.

Prior to having FI, I always dropped the warm idle lower than factory because I hated having cars do 15mph on idle alone.




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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: M A V I C
Date: February 09, 2019 07:30PM
Poll needs more options.




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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: deckeda
Date: February 09, 2019 07:38PM
Quote
SDGuy

Haha, I knew it before I clicked!
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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: deckeda
Date: February 09, 2019 07:39PM
Quote
M A V I C
Poll needs more options.

And FrankX wins the meta award!
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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: BernDog
Date: February 09, 2019 07:51PM
Quote
C(-)ris
Only reason I remote start is to make the interior the temperature I want. Has nothing to do with letting the engine get up to operating temp before moving.

Yes. For me, not the car. Honestly, I usually just go right away and freeze until things warm up due to impatience and a lack of planning ahead, but this is such a dumb argument. Anyone who lets the car warm up for the car’s sake is misguided, but if its cold enough to warrant that (even if unnecessary), it’s cold enough that the car will be more comfortable once warm.
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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: Rolando
Date: February 09, 2019 08:23PM
About 90 seconds. OTOH, Modern Mazdas take about 5 minutes for the heating system to warm up! I've looked online, spoken with other Mazda owners. It seems to be a side effect of the SkyActiv system



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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: S. Pupp
Date: February 10, 2019 12:33PM
The manual for the three VW's I've owned over the past 21 years have all stated NOT to warm up the engine, but rather drive gently for the first few minutes.
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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: mrlynn
Date: February 11, 2019 08:56AM
Quote
M A V I C
Poll needs more options.

Yep. Didn't answer.

What others said, drive gently until fully warm. Don't have an oil-temp gauge, but would be a good idea. Do have an oil-pressure gauge in my Expy, so I make sure it's up.

Years ago, in the '70s, a neighbor had a big white GM station wagon, which he used to go out and warm up by racing the engine loudly. I kept thinking, "What a fool; he's racing a cold engine; probably will kill the rings." But we moved away, so I never knew what happened.

/Mr Lynn
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Re: Speaking of "Modern Vehicles": Do You Warm Up?
Posted by: mikebw
Date: February 12, 2019 02:14PM
Quote
N-OS X-tasy!
Lubrication requirements for the valve train in my QX70 (and the G37 before it -- same engine) are more stringent than is typical, so after starting the engine I let it run for about ten seconds before taking off to give the oil enough time to provide sufficient lubrication. I can literally hear when it is ready to go.

About the same with my car. It sounds kinda janky until things get going after some seconds. I typically will open the passenger side first (as it sits closer to my house) put in my bag, start the engine and then walk around to the other side.
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