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Message |
    
Jess Brandt (Disco285)
| | Posted on Monday, September 30, 2002 - 02:21 pm: | 
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This thread is simply being started for the arguement of warming up your car before driving...i have talk to many people about this and there seems to be two opinions...
-to warm up the car and allow it to come close or to operating temperature...not many facts on this one...but simply that there is an operating temp. for a reason
-the second warming up theory is not to do it...supposedly one of my friends told me that you shouldn't warm it up...because the car was made to run...be turned on and ran...and told me that a test was done years ago to see this and they came to the conclusion that the cars oil pumps don't operate the same or @ all when the car is warming up...causing more damage with the loss of oil pressure...whereas if you drive the car until it gets to operating temp. it will allow the oil pumps to operate as they were made to...
remember these are not my opinions so there is not need to bash me...simply state your feelings on the idea...and feel free to back up what you say with any links....let this be a learning experience after all that is why i am posting...cuz i honestly don't know the answer...my father says not to warm up and my uncle swears on it...thanks,
later, Jess |
Jeremy Katka (Jkatka)
| | Posted on Monday, September 30, 2002 - 02:29 pm: |
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I believe that the owners manual said that you should start it and start driving and not to let it sit and idle to warm up.
JK |
Kyle
| | Posted on Monday, September 30, 2002 - 02:33 pm: |
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Its definaately better to warm it up for many reasons. Just a few are ...
Oil Circulation , warm oil circulates better.
Aluminum motor with some age and piston slap gets tighter once its a little warm..
Firing up most any injected engine and just slamming it into gear before it has settled down a bit will get it all freaked out as to what the base idle should be.
Kyle |
Al Oliveira (Offroaddisco)
| | Posted on Monday, September 30, 2002 - 03:07 pm: |
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There are two schools of thought and I think do what you like best. Either start the car then after a few seconds or a minute drive slowly or let it sit and warm up. But either way don't start and rev up the engine too much. |
James F. Thompson Jaime (Blueboy)
| | Posted on Monday, September 30, 2002 - 03:23 pm: |
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Having lived in W. PA. and snow skied for most of my life, always have let the engine come up to operating temperature before heading out. The defrost and heater actually work then and it is much safer. One of my pet peeves are the people who just drive off without cleaning any of the snow from their cars. They can't see shit out the front or rear of the car.
Jaime |
Mel A. (Krawlrovr)
| | Posted on Monday, September 30, 2002 - 03:23 pm: |
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I warm up only in the winter, but on regular days I just get in and go. The car squeels for a while, but it soon goes away. I haven't had any problems doing this. |
Blue (Bluegill)
| | Posted on Monday, September 30, 2002 - 03:43 pm: |
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shit, I have to start mine up and let it cool down before I take off |
Scott
| | Posted on Monday, September 30, 2002 - 05:10 pm: |
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Blue- you must be in the desert like me!
Phoenix, AZ. Warm it up to cool it down.
Scott |
Rob Davison (Pokerob)
| | Posted on Monday, September 30, 2002 - 05:18 pm: |
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they dont want you warming up because it pollutes the atmosohere. they wasnt you to turn on and go softly so as not to completely ruin your engine
rd |
Al Oliveira (Offroaddisco)
| | Posted on Monday, September 30, 2002 - 05:55 pm: |
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The argument I've heard for driving off slowly is because you don't warm any of the drivetrain and transmission just sitting there.
As for the comment about getting heat and being able to see out the window... that's what butt warmers and heated windscreens are for  |
JB
| | Posted on Monday, September 30, 2002 - 06:02 pm: |
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So - is there is another "they" that asks you to warm-up the car an extra minute and change the oil every 3000k just to make sure we are using as much oil as possible ?1?!? Hmmm...Kyle's point about needed lubrication aside - I once knew a guy in Sweeden that turned-off his car at every red light to " save the earth"...his misinformation was from a source designed solely to make those earth loving sweedes burn more gas and support the oil barrons even more while using bogus info to appeal to their green side to turn off the car and re-start every chance they got just to burn even more fuel.... |
Rob Davison (Pokerob)
| | Posted on Monday, September 30, 2002 - 07:58 pm: |
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well as wacko as it might sound to you not warming up is a good principal, not only does it pollute, but it wastes fuel too. think of all the cars out there and all the idling they are doing, and if you can just cut back a little bit that is just a little less smog in each city. but i guess yome pople would rather have smog than a cold car.
the "they" that everyone talks about are the people who you might ask if you are harming your powertrain buy not warming up. i think you will get a resounding "yes" that it is ultimatley more benificial to the components of the car if you warm up..
rd |
muskyman
| | Posted on Monday, September 30, 2002 - 08:44 pm: |
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well if you have a motor with a carb and a pre-oiler tests on aircraft have shown that a motor under load will warm up faster more evenly and last longer.
but they still dont take off cold
but in a injected car the O2 sensors will get all chocked up with soot if you dont warm up on a regular basis. in a motor such as a rover that allready known for running rich that can get costly. |
Kyle
| | Posted on Monday, September 30, 2002 - 09:23 pm: |
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You get slappin those loose ass pistons around in those bores and it aint goin to last long...
Kyle |
Al Oliveira (Offroaddisco)
| | Posted on Monday, September 30, 2002 - 10:05 pm: |
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For those of you who like to warm up your car, how do you know when the engine is warm? Water temp is not a very good indication and we don't have oil temp gauges in our Discos. |
niall forbes (Forbesn)
| | Posted on Monday, September 30, 2002 - 10:13 pm: |
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Also, my understanding is that starting and stopping an engine doesn't use more fuel. I remember hearing that Mercedes did a test where the started and shut off an engine something like 55 times and it used less fuel then when allowed to just idle for the same amount of time. Probably pretty hard the engine though.
As for warming up, I usually let the car idle for 30 seconds to a minute till it's settled down and ready to go and then start off and take it easy. I'll start it, get out and scrape the windows, then get in and head out. Works for me. I find if you let the car sit idleing for 10 minutes or whatever, your mileage tanks which really sucks 'cause it usually drops enough as it is in the cold. One thing to watch if you don't warm up your car is that when still cold it will have a higher idle so with an auto it will be marginally harder to stop at the end of your road.
I think it's probably a case of six of one, half dozen of the other. |
muskyman
| | Posted on Tuesday, October 01, 2002 - 09:09 am: |
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You get slappin those loose ass pistons around in those bores and it aint goin to last long...
Kyle
thats the point kyle ,tests have shown on aircraft that light load keeps the pistons from slapping.not only that but the real reason is said to be to bring the temp up faster so dissimilar metals reach temp sooner preventing gasket and seal failure due to uneven expansion rates of metals.
but in a road going vehicle driving slow is really not an option. where I live(outside chicago) driving is like ready begin,if you drive slow you get run over /run off. traffic moves fast and you need to be able to drive aggresivly to get into and stay with it. so not warming up in the cold months can mean a stall pulling out into rush hour traffic. so I warm up . |
R. B. Bailey (Rover50987)
| | Posted on Tuesday, October 01, 2002 - 03:37 pm: |
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if you subscribe to the opinion that you should warm up your car before driving it, and that cold oil just does not circulate as well; then doesn't it make more sense to warm the car for 30 seconds or so then to drive gently until the car gets to normal operating temp because the engine gets to operating temp quicker when it is being driven?
Most of us rely on our milage to tell us when our car is getting "old", but actually engine run time is the real indicator. (that is why aircraft mechanics use time for engine and airframe components.) We should actually be putting timers in our cars and warming the oil pans with electric heaters before we drive, no matter what the outside temperature is. |
JB
| | Posted on Tuesday, October 01, 2002 - 03:43 pm: |
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I let my engine warm up..I set the coffee on the roof every morning, open the door , get in ,start the truck and get on the seatbelt - I then realize my coffee is on the roof and I have to get out to grab it... by then the truck is ready to go and I have walked back to the house to get the other things I forgot. |
Kyle
| | Posted on Tuesday, October 01, 2002 - 03:54 pm: |
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By no means do I let it sit there for 30 minutes running. I just give it a few minutes to get its shit together... Dont you like having a few minutes to get your shit together in the AM before you start taking abuse ?
Kyle |
Simon E. Arenas (Simon)
| | Posted on Tuesday, October 01, 2002 - 04:37 pm: |
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i waint until the vacuum lets the revs go down...
then i'm off spreading the black tar all over miami!
80)
Simon |
Bruce
| | Posted on Tuesday, October 01, 2002 - 05:47 pm: |
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I am afraid if I started to let my rig warm-up a couple of minutes before I started off, it would get even more lazy than it is today, get accustomed to this treatment and the next thing you know, you have to step outside and start asking the Disco to cooperate when facing some offroad challenges. LOL, I beg enough in my life already with all of the females in my house, no need to add the damn Disco to that list. |
Al Oliveira (Offroaddisco)
| | Posted on Tuesday, October 01, 2002 - 09:56 pm: |
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JB, Sounds like you could use a preflight checklist |
niall forbes (Forbesn)
| | Posted on Tuesday, October 01, 2002 - 10:00 pm: |
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Here's my advice: Ask George what he does with his Rangie and then do that. His has lasted long neough that whatever he does must be good enough ;-) |
JohnL
| | Posted on Tuesday, October 01, 2002 - 10:09 pm: |
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Try visiting Switzerland and Germany - it's the custom there, and even the law in many Swiss cities, to turn the engine off when you're stopped at lights. Why? With modern fuel injected engines - many of them diesels - this saves fuel, i.e atmospheric pollutants. Perhaps the politicians all retire early to run workshops replacing starter motors but I don't think so. |
Ross Thoma (Rossthoma)
| | Posted on Wednesday, October 02, 2002 - 12:01 am: |
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Yes shutting down at lights does save the environment heck at idle you get 0.000 mpg. nuff said. But starters are expensive and the traffic light system doesn't give you enough notice to start up again, not to mention short lights and stuff...
So I put it in "N" and take some of the load off the engin. At start up I let the idle come down and let the oil get pressured up and the jug walls warm up a bit then drive off about 30 seconds after the engin idles down.
My "Land Ho" doesn't have a block heater so this winter when she is outside I will let her warm up a bit longer. My canadian born Ford Ranger has a block heater and so the oil is warm in the winter so long idle is not needed since the oil stays fluid.
Muskyman I live in the south loop where outside Chicago di you live???
Ross Thoma |
muskyman
| | Posted on Wednesday, October 02, 2002 - 12:19 am: |
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ross,
i'm up in the NW burbs...Barrington |
niall forbes (Forbesn)
| | Posted on Wednesday, October 02, 2002 - 08:24 am: |
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Speaking of block heaters, anyone know about how long they take to take effect? Do you leave it plugged in over night or plug it in for an hour in the morning or something? I can't believe I don't know this but I've actually never used one up here.
Do people like the ones that stick into freeze plugs or the ones that circulate the coolant? I had one of the coolant circulating ones on my IIa and it seemed to warm up very quickly but then it would blow the circuit breaker in the house so I threw it away. |
Ross Thoma (Rossthoma)
| | Posted on Wednesday, October 02, 2002 - 11:51 am: |
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Cool If you are ever in the Loop I work at Carteaux Jewelers, 31 North Wabash ground floor.
From what I know I like the freeze plug one since you want to keep the oil runny for quick lubrication at start up. The coolent one warms up the cab heater faster but doesn't get down into the oil resevoir area to keep the oil runny.
Some people have those fancy shmancy timers on the outlet to there heater cord that sends power 2 hrs before they leave in the morning. ( i think 30-45 min is the least that should be plugged in for read that somewhere) I am lazy and just plug it in at night before I go to bed.
P.S. That was before I moved to Chicago and It is only cold enough to plug in 2 wks of the year...
Ross Thoma |
Paul Long
| | Posted on Wednesday, October 02, 2002 - 07:35 pm: |
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Don't you guys warm your women up before getting rough with them? Be a little courteous! Clearances are designed to be correct at operating temp. The colder the ambient temp. the longer the warm up should be before full load. Live in a cold winter climate? Put a quart of drain oil in your freezer overnight. Try to dump it out in the morning. That's the thickness in your crankcase if your parking next to your dogs frozen water dish. Better to bring the dog and Rover inside. You'll get more mileage out of both. Now if your sure you have a female Rover, (not the dog you perverts) warm her up slowly for best results. |
Blue (Bluegill)
| | Posted on Wednesday, October 02, 2002 - 07:41 pm: |
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you should never let her cool down in the first place |
Alan Yim (Alan)
| | Posted on Thursday, October 03, 2002 - 08:34 pm: |
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Thought I'd wade into this warm-up or not question. In the summer, don't warm-up. Just start and go. In the winter, I let the engine run for about 30 seconds and go (usually long enough to clear the snow off my windshield). I find my truck warms up much quicker that way than letting it idle for like 10 minutes with the heat blasting. So I guess you could say that I don't really "warm-up". Never did either with my Pathfinder. I just started and went whether it was winter or summer. Never had a problem with that truck either. Helps if you use decent oil.
Also, Land Rover has told me before not to let it idle for long periods (like 10 minutes) too. |
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