How many of us oil nerds still "warm up" your car?

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Originally Posted By: Jarlaxle
Actually, it does...the AC drys the air, and it DOES work to defog the glass.



Exactly, works that way on my cars to defog the windshield. NO warming up needed.
 
Originally Posted By: grampi
Originally Posted By: Jarlaxle
Actually, it does...the AC drys the air, and it DOES work to defog the glass.


Then why doesn't the defroster in my, or my daughter's Corolla, my wife's MPV, or my other daughter's Cube (all of which are equipped with A/C BTW), or any other vehicle I've owned my entire lifetime for that matter, clear the windows until the defroster starts blowing warm air? I suppose you're going to say there must have been something wrong with each and every one of the defrosters in those vehicles? I realize vehicles equipped with AC dry the air when set to defrost, but that doesn't mean they will clear/keep the windows clear when there's no heat coming from the vents...


Then clearly, there IS something wrong with them...either a problem with that vehicle, or a poorly-designed HVAC system. The only vehicle I owned that WOULDN'T clear the fog off the windshield immediately was my old Jeep pickup...with no A/C and a heating system that was, at best, only fair. (It was a 1983, but basically an early-60's design.) Everything else, from my wife's Metro to my Cadillac to her Grand National to my Cherokee to the Freightliner M2 I drive at work...turn on the defroster, the windows will clear. It takes a bit longer cold, but still works.
 
I get in, crank up and drive for the most part. But as of late I wait 20-30 seconds when its cold outside. I find that the power steering is looser if you wait a few seconds. To be honest I have floored less that 5 minutes after starting the car. After I seen that the cross hatches were still on my cylinder wall at 142k my veiw of engine wear changed. Car has 192k on it now and shows no sign of stopping.

The a/c does help with defogging the glass. Maybe not so much in the winter but in the spring/summer it helps big time. Have you ever had a car with no a/c and its raining, the fog on the window makes it almost impossible to drive. One of the reasons I think a/c is a must if you live in the south humidity and heat.
 
Originally Posted By: Maxima97
. My friend there always pour a gallon of warm tap water on window and go.


Yeah....and wonderful way to crack a good windshield, not on one, but two cars.....ask me how I know?????

Never again.

In Colorado's winter, this year, I'm not getting into a sub-zero vehicle, not when I DO work outside all day long.....it's one thing for those that might work inside and don't get cold easy and don't mind being chilled for the first several minutes.

Not me, I'm having a hard enough time getting heat out of this 4-cylinder truck cause it's been so cold....nothing wrong with the truck, it's brand-new.

I let this truck idle for about 5min or so; my cummins diesel, I let it idle for about 10min, same with my personal vehicles.

I think it depends upon the vehicle as to whether the transmission fluid is circulated upon idling, on 2 of my vehicles, the tranny circulates in park just as it does in driving....so I do notice a huge difference in those first few shifts if I allow it to warm up a bit versus just putting it in drive.

There is no room for casual, slow warm-up here where I live....2 blocks and you're on a 75mph highway bumper to bumper truck traffic; i.e 3,500rpms and then some......take an ice cold, sub-zero transmission and ask it to shift.....NOT happenin!

I have driven every single vehicle of mine from a cold start, and I've driven all of them after allowing idle for 5-10min....huge difference....I'll stick to my ways of allowing them to idle for 5-10min.

Obviously hasn't done me any harm; have 204k, 350k, and well over 100k on the other 2.
 
Originally Posted By: Jarlaxle
Originally Posted By: grampi
Originally Posted By: Jarlaxle
Actually, it does...the AC drys the air, and it DOES work to defog the glass.


Then why doesn't the defroster in my, or my daughter's Corolla, my wife's MPV, or my other daughter's Cube (all of which are equipped with A/C BTW), or any other vehicle I've owned my entire lifetime for that matter, clear the windows until the defroster starts blowing warm air? I suppose you're going to say there must have been something wrong with each and every one of the defrosters in those vehicles? I realize vehicles equipped with AC dry the air when set to defrost, but that doesn't mean they will clear/keep the windows clear when there's no heat coming from the vents...


Then clearly, there IS something wrong with them...either a problem with that vehicle, or a poorly-designed HVAC system. The only vehicle I owned that WOULDN'T clear the fog off the windshield immediately was my old Jeep pickup...with no A/C and a heating system that was, at best, only fair. (It was a 1983, but basically an early-60's design.) Everything else, from my wife's Metro to my Cadillac to her Grand National to my Cherokee to the Freightliner M2 I drive at work...turn on the defroster, the windows will clear. It takes a bit longer cold, but still works.


LMAO! I guess no one here knows much about HVAC? So thermistors, pressure switches, pcm(BC) and temperature sensors play no part in air conditioning? So liquid coolant which absorbs heat and converts to gas, which is then drawn out, cooled and pressurized to be released again works at all temperatures??? well that's fantastic, where do I get one of those? The systems generally work in conjunction with one another, plus there is this whole physics thing with hot and cold air and absorption/saturation rates. Anyways that's besides the point...

I drive a Diesel, if it's plugged in I don't bother to let it idle. If I'm unable to plug it in, I always give it 5-10 minutes.
 
i like to, but cant always let it idle for a few minutes. My normal is to let the engine idle until the oil pressure drops from 75psi cold, to 50psi before I drive slowly out of the neighborhood. It takes about 4-5 minutes of idling.
 
Originally Posted By: Jarlaxle
Originally Posted By: grampi
Originally Posted By: Jarlaxle
Actually, it does...the AC drys the air, and it DOES work to defog the glass.


Then why doesn't the defroster in my, or my daughter's Corolla, my wife's MPV, or my other daughter's Cube (all of which are equipped with A/C BTW), or any other vehicle I've owned my entire lifetime for that matter, clear the windows until the defroster starts blowing warm air? I suppose you're going to say there must have been something wrong with each and every one of the defrosters in those vehicles? I realize vehicles equipped with AC dry the air when set to defrost, but that doesn't mean they will clear/keep the windows clear when there's no heat coming from the vents...


Then clearly, there IS something wrong with them...either a problem with that vehicle, or a poorly-designed HVAC system. The only vehicle I owned that WOULDN'T clear the fog off the windshield immediately was my old Jeep pickup...with no A/C and a heating system that was, at best, only fair. (It was a 1983, but basically an early-60's design.) Everything else, from my wife's Metro to my Cadillac to her Grand National to my Cherokee to the Freightliner M2 I drive at work...turn on the defroster, the windows will clear. It takes a bit longer cold, but still works.


Sorry, you're wrong...no heat, no clear...
 
Originally Posted By: DC44
I get in, crank up and drive for the most part. But as of late I wait 20-30 seconds when its cold outside. I find that the power steering is looser if you wait a few seconds. To be honest I have floored less that 5 minutes after starting the car. After I seen that the cross hatches were still on my cylinder wall at 142k my veiw of engine wear changed. Car has 192k on it now and shows no sign of stopping.

The a/c does help with defogging the glass. Maybe not so much in the winter but in the spring/summer it helps big time. Have you ever had a car with no a/c and its raining, the fog on the window makes it almost impossible to drive. One of the reasons I think a/c is a must if you live in the south humidity and heat.


You're absolutely right that AC does help with keeping the windows clear, but when it's below freezing outside it will not clear the windows as some are claiming before the defroster is blowing warm air...it's physically impossible to do so...
 
Originally Posted By: slammds15
Originally Posted By: Jarlaxle
Originally Posted By: grampi
Originally Posted By: Jarlaxle
Actually, it does...the AC drys the air, and it DOES work to defog the glass.


Then why doesn't the defroster in my, or my daughter's Corolla, my wife's MPV, or my other daughter's Cube (all of which are equipped with A/C BTW), or any other vehicle I've owned my entire lifetime for that matter, clear the windows until the defroster starts blowing warm air? I suppose you're going to say there must have been something wrong with each and every one of the defrosters in those vehicles? I realize vehicles equipped with AC dry the air when set to defrost, but that doesn't mean they will clear/keep the windows clear when there's no heat coming from the vents...


Then clearly, there IS something wrong with them...either a problem with that vehicle, or a poorly-designed HVAC system. The only vehicle I owned that WOULDN'T clear the fog off the windshield immediately was my old Jeep pickup...with no A/C and a heating system that was, at best, only fair. (It was a 1983, but basically an early-60's design.) Everything else, from my wife's Metro to my Cadillac to her Grand National to my Cherokee to the Freightliner M2 I drive at work...turn on the defroster, the windows will clear. It takes a bit longer cold, but still works.


LMAO! I guess no one here knows much about HVAC? So thermistors, pressure switches, pcm(BC) and temperature sensors play no part in air conditioning? So liquid coolant which absorbs heat and converts to gas, which is then drawn out, cooled and pressurized to be released again works at all temperatures??? well that's fantastic, where do I get one of those? The systems generally work in conjunction with one another, plus there is this whole physics thing with hot and cold air and absorption/saturation rates. Anyways that's besides the point...

I drive a Diesel, if it's plugged in I don't bother to let it idle. If I'm unable to plug it in, I always give it 5-10 minutes.


Yes, I would also like to know where these people are buying their vehicles with these magical HVAC systems that totally defy physics...
 
Originally Posted By: grampi
Originally Posted By: DC44
I get in, crank up and drive for the most part. But as of late I wait 20-30 seconds when its cold outside. I find that the power steering is looser if you wait a few seconds. To be honest I have floored less that 5 minutes after starting the car. After I seen that the cross hatches were still on my cylinder wall at 142k my veiw of engine wear changed. Car has 192k on it now and shows no sign of stopping.

The a/c does help with defogging the glass. Maybe not so much in the winter but in the spring/summer it helps big time. Have you ever had a car with no a/c and its raining, the fog on the window makes it almost impossible to drive. One of the reasons I think a/c is a must if you live in the south humidity and heat.


You're absolutely right that AC does help with keeping the windows clear, but when it's below freezing outside it will not clear the windows as some are claiming before the defroster is blowing warm air...it's physically impossible to do so...

Exactly! I don't think you can make a blanket statement when you consider that different parts of the country have different weather.
For example, we had a little rain yesterday. Even here in Southern Ca. at 5:30 this morning, there was ice on my windshield. The air temperature was about 34. It took about 3 - 4 minutes to get enough heat to melt the ice on the outside on the windshield and start to clear the fog on the inside.

But normally I let the car idle drop down - usually about 30 seconds or so, and drive easy for the first 2 or 3 miles.

BTW, haven't we discussed this topic Ad nauseam before?
 
Originally Posted By: grampi

Yes, I would also like to know where these people are buying their vehicles with these magical HVAC systems that totally defy physics...

It came standard on my Neon... But seriously, the inside of my windows are rarely frosted when I get in my car in the morning. To keep them clear I blow any temperature of air over my windows. At no point from 0F air to 100F air do they fog up as I drive and the car warms up... It doesn't defy physics and no AC is needed either(mine broke 5 years ago).
 
I used to wait 30 seconds, now i will seriously consider cutting that down to 5 or so.

If i had some type of heavier oil in my car, such as W number to 10 or 20, id likely wait 30 seconds before engaging gear.

I could likely turn the key and go on near every vehicle, especially new ones. Still though.. some cars, i would not do this.

It may be unnecessary but every comparison in oils i see says the maximum it takes the oil to lubricate the remote-most areas is ~45 seconds on the worst performing heavier dino oils, so ~30 seconds is ok with me.

I also like the BMW M's electronic tach warm-up guide (RPMs caution) in this respect.

Mom "turns the key and goes" quite literally and the vehicle is moving (in gear) less than one second after key turned even on the 10W-40, but she doesnt gun the engine. I used to be in a place with government ways and Ford V10 engines.. where they (the drivers) turned the key on 10 degree mornings and 2. FLOORED it. No lie. I feel they did it because they could, and had no respect for anything and enjoyed doing so
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Originally Posted By: Stewart Fan
My wife likes the "start and dart". Her car is in reverse and backing out of the driveway a split second after its started.



Yeah thats my Mom. With 10W-40!!!!

And as long as she isnt applying a lot of gas i think it might be ok.. not so sure with 10W-40..
 
Originally Posted By: IndyIan
Originally Posted By: grampi

Yes, I would also like to know where these people are buying their vehicles with these magical HVAC systems that totally defy physics...

It came standard on my Neon... But seriously, the inside of my windows are rarely frosted when I get in my car in the morning. To keep them clear I blow any temperature of air over my windows. At no point from 0F air to 100F air do they fog up as I drive and the car warms up... It doesn't defy physics and no AC is needed either(mine broke 5 years ago).


Who said anything about frost being on the INSIDE of the windows....except you? I will say it one more time for the slow people. It's physically impossible for a defroster blowing cold air to clear either frost/ice from the outside of the windows, or fog from the inside. If you think your's is doing this, you either don't have anything on your windows to begin with, or they are not fogging after you get in the car. There is no such thing as a magic defroster that'll clear the windows while blowing cold air...
 
Originally Posted By: grampi
Originally Posted By: IndyIan
Originally Posted By: grampi

Yes, I would also like to know where these people are buying their vehicles with these magical HVAC systems that totally defy physics...

It came standard on my Neon... But seriously, the inside of my windows are rarely frosted when I get in my car in the morning. To keep them clear I blow any temperature of air over my windows. At no point from 0F air to 100F air do they fog up as I drive and the car warms up... It doesn't defy physics and no AC is needed either(mine broke 5 years ago).


Who said anything about frost being on the INSIDE of the windows....except you? I will say it one more time for the slow people. It's physically impossible for a defroster blowing cold air to clear either frost/ice from the outside of the windows, or fog from the inside. If you think your's is doing this, you either don't have anything on your windows to begin with, or they are not fogging after you get in the car. There is no such thing as a magic defroster that'll clear the windows while blowing cold air...

Dear god...
crazy.gif
Get one of these then.
9120014_hpo_13054_pri_larg.jpg
 
Originally Posted By: IndyIan
[/quote]
Dear god...
crazy.gif
Get one of these then.
9120014_hpo_13054_pri_larg.jpg




Why, I'm not the one whose so impatient that I can't wait for the engine to heat up before I drive...I don't need one...
 
Originally Posted By: IndyIan
Originally Posted By: grampi

Yes, I would also like to know where these people are buying their vehicles with these magical HVAC systems that totally defy physics...

It came standard on my Neon... But seriously, the inside of my windows are rarely frosted when I get in my car in the morning. To keep them clear I blow any temperature of air over my windows. At no point from 0F air to 100F air do they fog up as I drive and the car warms up... It doesn't defy physics and no AC is needed either(mine broke 5 years ago).


So what you are saying is that there is no fog to begin with, you have the defroster on, which is exchanging air in the vehicle, not allowing moisture to saturate the air and condense on the "cold" windshield. I can agree to that. With no temperature or humidity difference no change will be noticeable. Remember your heater core receives coolant all the time whether your engine is "up to temp" or not. So even a few degrees will make a big difference.

I love the snow brush post btw, I own one but if it's that bad I tend to be lazy and put it on defog till it melts or I run out of washer fluid lol
 
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