Thoughts? Clearly corporate jews trying to keep people from

>MUH CORPORATE JEWS
Fuck off back to /pol/ and learn how engines work instead of just making retarded IDS HABBEDING threads when you clearly have no idea what you're talking about.

Engines suffer by far the most wear when they're cold and you're doing nothing but prolonging that state by being a fucktard and ignoring your car's manual because you apparently know better.

>>14293100
I woudnt believe in what op is saying nearly as much if it wasnt for people like you

>Your car compensates for this initially by adding more gasoline to the air-vapor mixture
Fag with electronic sensors detected.

>>14293077
The wear is immeasurable. Diesels idle for fucking hours.
I do and will continue to let my car idle for a minute before I drive.
And I will also continue to keep it under 2k rpm and low load until it's at 160.

Fucking starting and driving a car is bad for a car.

Anything you do to a car causes damage.

That being said, fuck it. Cars are idled until warm every fucking day by thousands upon thousands of people and have been for decades. Who gives a fuck?

>>14293155
Diesel also has lubrication properties opposite to gas.

But OP is a fag anyways.

>>14293155
Diesels are also cast iron.

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>>14293077
>Ciatti has worked on combustion engines — engines that generate power from burning fuel, like gasoline —

>>14293107
You mean people who are correct instead of just fedora edgelords who don't even read articles they bitch about?

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>>14293100
>a cold engine idling at 600rpm is doing more damage than a cold engine under load at 2500rpm

>>14293077
Fuck it, I guess I'll go to /pol/ to talk about cars

>>14293198
modern diesels are compacted graphite iron.

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Every fucking time it's mind blowing how things like this are totally new to Burgers and even a controversy while we learn things like this when learning for the driving license.

But then again the schooling takes several months and we have to pay >€1500 for that fucking thing.

Considering that my clutch doesn't want to let me shift into gear when it's that cold unless you really force it, I think I'll keep idling for a minute or two when it's below freezing out.

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My car idles at 2K when upon startup its really cold out but then gets back to 1k when warmed up, is that bad?

>>14293355
no

>>14293297
None of this is totally new to anyone who reads their fucking owner's manuals.

>>14293225
>only the engine speed matters!

>>14293355
its a little high, could be a vacuum leak or ICV problem.

but in general no high idle means nothing except wasting gas.

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>>14293378
>implying anyone reads the owner's manual

Fucking seriously?

>>14293386
Yea, seriously. If you don't, you're a fucking moron. Nothing anyone can do about that.

>>14293100
Most cat manuals say to warm it up above the c, which unless you're in negative degree weather should take less than a minute.

>>14293381
he said under load, can you read or nah?

>>14293383

What's an ICV?

>>14293393
I do but just saying that most even don't know where they have it or don't even did get one when they bought the car second hand

>>14293407
http://lmgtfy.com/?q=ICV+car

>>14293378
>car manuals
>not full of shit

I have a tip, go full WOT to warm up your engine faster.

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Idling a car to warm it up is *best practice,* even in warm weather.

I am a mechanical engineer, just like the person cited in OP's article.

>>14293405
>only the engine speed and load matters!

>>14293457
yes, that's all the matters.

>>14293414
That's too bad for them. They're morons for not keeping track of it.
>>14293449
>I am a mechanical engineer
Highly doubt that. Where do you work, even if you are? This guy works at a national laboratory.

>>14293467
congrats you're retarded

>>14293476
care to explain otherwise?

>>14293419

Ah, thanks.

>>14293488
nope, enjoy your engine wear

>>14293449
This is NOT A THING ANYMORE. With modern oil, engine design and oil pumps you DO NOT NEED TO WARM A CAR UP!!!! Jesus Christ. Oil is flowing where it's needed the second you start the car. Go spread your bad 1920's information elsewhere.

>>14293498
exactly you don't know shit.

>>14293506
an engines tolerances are measured while at operating temperature. it has nothing to do with oil.

>>14293510
and you should learn some manners. you'll find people are a lot more helpful then.

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>>14293506
It's not about lubrication, it's about how metals change with heat. Engines are made of many different materials, and they expand with different rates as they are heated. Engine tolerances are designed for operating temperatures. When I had an STi, it would have piston slap like a mofo if you didn't warm it up for at least ~2 minutes.

Pic related, metals actually change their states depending upon temp and composition.

>>14293469
I work as an FVT&E Engineer at Harley-Davidson, degree from Kettering University.

>park car in garage
>attached to house so always above freezing
>25 years of owning GM products
>never a single engine issue

>>14293520
>Cylinders shrink when cold
>pistons shrink the same amount when cold
>same for all bearings
>tolerance is the same when cold as when hot

>>14293506
Found the jew

>>14293552
You're an idiot.

>>14293550
>range from 0 to 3000F
>engines run at 210f when hot

Pistons and cylinder walls run a bit hotter, but no where near 1300f where you graph starts to show changes.

>>14293520
you silly fuck

>>14293577
that's not the point lel

>>14293100
this

/pol/ is fucking stupid

>>14293577
water temp is 210f..

cylinder temps are 600+

>>14293579
sorry, but this is common knowledge to anyone who has ever raced or worked in the automotive engineering field.

>>14293577
>engines run at 210f when hot
That's the *water/coolant temperature,* temperature inside of a cylinder can be much hotter.

>>14293629
engine tolerances are measured at room temperature
source: i build engines

>>14293577
I'm no engineer, but it's well known that piston tolerances are designed based on heat expansion. And everyone knows an aluminum head on a cast iron block will fuck up your head gasket (or for special ed GM, aluminum block and cast heads...).

>>14293577
that graph has nothing to do with heat expansion

>>14293620
>cylinder temps are 600+

Maybe that why they made these things called cylinder rings to seal the piston over a range of temperatures...

>>14293637
>grease monkey logic
When you rebuild them yes.. not when they are designed..lmao

>>14293637
They are measured at room temp when determining, as a customer, if the pieces you got were mad correctly. However, when they were designed by engineering, they consider only operating temperatures.

>>14293641
What the fuck are you arguing against you incredible moron? Operating temp has nothing to do with oil. Period. End of discussion. You were wrong. Bye now.

>>14293648
no shit. i'm responding to someone who said "tolerances are measured at operating temperature" which isn't so.

>>14293639
>it's well known that piston tolerances are designed based on heat expansion.

Sure, they are designed to expand, but that doesn't discount the fact that they are optimized at operating temp.

>And everyone knows an aluminum head on a cast iron block will fuck up your head gasket (or for special ed GM, aluminum block and cast heads...)

What's your point? I've had cars with iron blocks/alum heads.

>>14293121
wat.

Holy fuck takes an engines 101 class. More fuel = lower combustion temps, even carburetted cars have this kind of system at cold start.

More fuel does not equal higher RPM, you need more air to thats why the choke also opens the throttle (And the cold start idle in cars with electronic sensors)

>>14293077
Okay...

And what about the fact that the oil temp and pressure is still low from being shit off overnight? All they mention is that more gas might wash some of the oil off... But that's going to happen anyway when you start driving for the first minute or so, and to make things worse, you're putting more load on it while the oil is still cold, thick, and before pressure has built up, meaning that it isn't going to be applied to the cylinder as effectively, anyway!

Most people aren't idling their DD for more than 1-2 minutes at a time. I usually start my car before I start brushing/scraping the frost off the windows and windshield, which I will keep doing, regardless of what one mechanic says to Business Insider.

>>14293687
if it takes more than 5 seconds to build oil pressure your engine's fucked

>>14293355
that is completely normal. It idles faster until the engine warms up. People who let their cars sit and idle until the entire inside of the car is hot are retarded. Letting your car idle for any amount of time after its warm is not good for it; it's better to be putting a load on it than let it sit. Idling is a way to keep fuel consumption low while sitting stopped for short periods of time where it would not make sense to turn the car completely off, it is far from the optimum operating condition.

>>14293100

off yourself, bernstein

>>14293786
And temperature, Einstein.

>>14293833
what matters is having oil where it should be, hot or not.
getting your engine under load will help warm it up

>>14293865
The oil isn't going to flow well when it's colder, man.

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>This old argument

What's your manual say? Do that. There isn;t a one size fits all answer to this debate.

>>14293917
well the other options are to get a block heater or catch the bus

>>14293927
Or, you know, idle for about a minute.

>>14293920
>There isn't a one size fits all answer
Yes there is.

It's "Do whatever you want because it doesn't fucking matter in the slightest"

>>14293933
you dumb bastard. did this thread go over your head?

>>14293951
No, please enlighten me on what's wrong.

Idling is not bad for your car.
Only an idiot could imagine this.

>>14293959
lmfao
just read the thread again

>>14293966
Sounds like you're wrong, Bill.

>>14293973
does it?
okay...

>>14293976
It indeed does, my friend.