The New Debate! To Warm Or Not To Warm Up Your Engine? Is It Really A Question, Or A Bunch Of Bunk?!
Summary
TLDRIn this video, the host addresses the debate on whether to warm up your car in cold weather. They review an article claiming that warming up can damage modern engines, discuss manufacturer recommendations, and logically dissect the claims. The conclusion supports warming up vehicles, especially for those with older models or in extreme cold, to protect engines and ensure safe driving conditions.
Takeaways
- 🚗 The debate about whether to warm up your car in cold weather is common and often confusing.
- 😅 An article on Facebook claimed that warming up your car can damage the engine, which was humorous to the video creator.
- ❄️ Modern vehicles, especially those built after 1980, do not require extensive warm-up before driving in cold weather.
- 🔧 Idling in cold temperatures can actually shorten the engine's life by stripping away oil from the pistons and cylinders.
- 🚀 Gas-powered cars need oil to stay lubricated, and the oil pump circulates oil within a minute of starting the car.
- 🛠️ Constantly letting a cold engine idle can be counterproductive as it can strip away oil from critical engine components.
- 💡 For recent cars with electronic fuel injection, sensors adjust the air-fuel mixture to compensate for cold temperatures, unlike older carbureted engines.
- 🌡️ Most manufacturers recommend gentle driving after 30 seconds of starting the car in cold weather as the engine warms up faster when in motion.
- 🔋 Electric vehicles (EVs) are an exception, and it's advised to warm them up before unplugging to preserve battery range.
- 📖 Subaru's owner's manual instructs drivers to warm up the vehicle before driving, especially in cold conditions.
Q & A
What is the main debate discussed in the video?
-The main debate discussed in the video is whether or not to warm up your car before driving in cold weather.
What does the video claim about warming up cars built after 1980?
-The video claims that most vehicles built after 1980 no longer need to be warmed up before driving, and that driving after 30 seconds to a minute of starting the car is the best practice.
What harm does the video suggest can come from warming up your car in cold weather?
-The video suggests that warming up your car in cold weather can damage the engine by stripping away oil from the engine's pistons and cylinders.
What role does the oil pump play according to the video?
-The video explains that the oil pump circulates oil in less than a minute after starting the car, but if you let your car idle to warm up, the oil can get stripped away.
How does the video refute the claim that warming up the car is harmful?
-The video refutes the claim by stating that the oil pump is constantly supplying oil pressure when the engine is running, regardless of whether it's idling or driving.
What does the video say about the difference between idling to warm up and driving a cold car?
-The video argues that there is no significant difference because the oil pump provides pressurized engine oil all throughout the engine as long as it's running, and the rich fuel mixture occurs whether idling or driving.
What advice does the video give for electric vehicle owners regarding warming up their cars?
-The video advises electric vehicle owners to warm up their cars before unplugging, as it can help preserve battery range.
What does the video mention about Subaru's recommendations for warming up the car?
-The video mentions that Subaru recommends warming up the car before driving, as indicated by the blue temperature light and high idle during the warm-up procedure.
Why is it important to warm up the engine according to the video?
-The video states that it's important to warm up the engine to allow fluids to flow well and protect the engine components, and to gradually acclimate the engine block, Pistons, crankshaft, and cylinder heads to stable temperatures.
What is the video's stance on the environmental concerns related to idling cars?
-The video suggests that the environmental concerns about pollution from idling are minimal, as the car would still be in open loop whether idling or driving until it reaches a warm enough temperature.
What does the video suggest about the difference in warming up gasoline-powered vehicles versus electric vehicles?
-The video suggests that gasoline-powered vehicles should not be warmed up to avoid damaging the engine, while electric vehicles should be warmed up to preserve battery range.
Outlines
🚗 Debunking Winter Car Warm-up Myths
The video addresses the common debate about whether or not to warm up your car in the winter. The host discusses a news article that humorously advises against warming up cars, which is traditionally a popular practice. The article is said to recommend against it, claiming it can damage the engine. Various sources such as Firestone Complete Auto Care, Smart Motors Toyota, the U.S. Department of Energy, NAPA Auto Parts, and Chuck's Auto Repair are mentioned as authorities supporting the claim that modern vehicles built after 1980 do not require warm-up before driving. The video also humorously points out that while some suggest not warming up the car to protect the engine, others might do so to protect the interior from cold.
🔍 Analyzing the Effects of Cold Weather on Engines
This paragraph delves into the mechanics of why some believe warming up a car can harm the engine. It mentions that letting a car idle in cold temperatures can supposedly strip away oil from the engine's pistons and cylinders, which are crucial for the engine's operation. The video explains that gas-powered cars need oil to stay lubricated, and that the oil pump should circulate oil within a minute of starting the car. However, the host challenges the idea that idling to warm up the cabin would strip away oil, arguing that the oil pump continuously supplies pressurized oil regardless of whether the car is idling or driving.
🔋 Electric Vehicles vs Gasoline Engines in Cold Weather
The video contrasts the advice for electric vehicles (EVs) with that for gasoline-powered vehicles. For EVs, it's suggested to warm up the car before driving to preserve battery range, as the cold can affect battery performance. The video humorously points out the disparity in advice: while EV owners are told to warm up their cars to protect the battery, gasoline vehicle owners are warned against it to protect the engine. The host then discusses the manufacturer's recommendations for warming up gasoline vehicles, specifically mentioning Subaru's advice to warm up the vehicle before driving.
⏰ Manufacturer's Recommendations on Winter Car Warm-up
The paragraph focuses on what Subaru, as a manufacturer, recommends regarding winter car warm-up. It mentions that Subaru advises warming up the vehicle before driving, as indicated by a blue temperature light that signals when the engine is cold. The video explains that during this period, the engine idles higher to warm up quickly and safely. The host also discusses the importance of warming up not just for comfort but for the mechanical well-being of the vehicle, such as ensuring that engine oil, transmission fluid, and coolant reach appropriate temperatures for effective operation.
🤔 Logical Considerations for Winter Car Warm-up
In the final paragraph, the host shares a personal perspective on the logic behind warming up a car in winter. They argue that warming up the engine gradually is better for the engine than driving it immediately after starting, as this could create hot spots and stress the engine components. The video concludes with a call for viewer opinions on the matter, asking whether they warm up their cars and why, reflecting a community engagement approach to the topic.
Mindmap
Keywords
💡Warm-up
💡Idling
💡Engine
💡Lubrication
💡Oil Pump
💡Fuel Injection
💡Carburetor
💡Emission
💡Electric Vehicle (EV)
💡Block Heater
💡Closed-loop
Highlights
Debate on whether to warm up your car in cold weather.
News article on Facebook suggests not warming up your car can damage the engine.
Manufacturers' recommendations and logical analysis to resolve the debate.
Firestone Complete Auto Care and Smart Motors Toyota claim warming up can harm engines.
Most vehicles built after 1980 do not need to warm up before driving.
Driving after 30 seconds to a minute of starting is recommended.
Idling in cold temperatures can shorten engine life by stripping oil.
Gas powered cars need oil to keep engines lubricated.
Modern cars with electronic fuel injection have sensors that adjust the fuel mixture.
U.S. Department of Energy recommends driving off gently after 30 seconds.
Electric vehicles should be warmed up to preserve battery range.
Subaru's owner's manual instructs to warm up the vehicle before driving.
Warming up reduces friction and wear on engine components.
Engine block and cylinder heads expand and contract with temperature changes.
The video concludes with a call to action for viewers to share their thoughts in the comments.
The host wishes viewers a merry Christmas and happy holidays.
Transcripts
greetings viewers welcome back to the
channel in today's video the age-old
debate that happens every single year
this time of year to warm up or not to
warm up your car before driving in the
cold today we're going to look at a news
article that I ran across the other day
on Facebook that made me laugh out loud
we're going to look at the
manufacturer's recommendations and we're
going to look at this logically and
sensibly and try to put the bed once and
for all to or not to warm up your car
before driving in the winter
[Music]
thank you
so guys it is cold and I mean it is cold
I'm literally straddling a kerosene
heater right now trying not to freeze
but we're going to start off the video
by looking at this article I saw the
other day on Facebook saying to not warm
up your car before driving in the winter
time now this was posted on ABC 10.
we're going to look at it yes warming up
your car before driving in cold weather
can damage the engine
yeah that's what they're claiming here
excessive idling does not do anything
positive for your engines long-term
Health we're going to look at this I'm
going to put it on screen I'm going to
read through it real quick and then
we're going to talk about some of the
claims they're making here on why not to
warm up your car and why it's destroying
your engine so we're going to paraphrase
and jump around a little bit I'm not
going to read this word for word I will
leave a link to this article in the
description of the video if you want to
check it out yourself so frigid
temperatures are here it's a common
practice for many drivers to warm up
their car before driving most have a
remote start feature uh but briefly
viewers want to know if they're doing
potential harm to their engine so they
went to some sources and they listed the
sources here uh Firestone Complete Auto
Care
Smart Motors Toyota in Madison Wisconsin
uh the U.S department of energy
NAPA Auto Parts and Chuck's Auto Repair
in Seattle Washington
so answer true yes warming up your car
before driving in the cold weather could
cause long-term damage to the engine
ridiculous
most Vehicles built after 1980 no longer
need to warm up before driving and
experts say driving after 30 seconds to
a minute after starting your car is the
best practice
let's find out why they think that uh
you're going to destroy your engine by
letting it warm up
it's true that warming up gas powered
vehicles before driving in cold weather
can cause damage to the engine according
to Firestone Complete Auto Care and
Smart Motors Toyota
quote if you're one of many drivers who
thinks it's important to turn on your
car let it sit for a bit before hitting
the road in wintry weather you could be
doing your engine more harm than good in
quote Firestone says
letting your car idle in cold
temperatures can shorten the life of
your engine by stripping away oil from
the engine's pistons and cylinders two
critical components that help your
engine run
gas powered cars need oil to keep their
engines lubricated
when you start the car an oil pump
circulates the oil in less than a minute
but if you let your car idle to warm up
the cabin the oil can get stripped away
because apparently the oil pump doesn't
constantly Supply pressurized oil to the
engine whether it's idling or driving
down the road or what RPM is at
keep that in mind
Chuck's Auto Repair explains quote
constantly letting a cold engine idle
can actually be counterproductive
because it gradually strips away oil
from the engine's pistons and cylinders
dot dot dot here's the problem when the
engine is cold the gas may not evaporate
completely as it combines with the air
for more recent cars with electronic
fuel injection there are sensors that
detect
this and compensate by adding more gas
to the mixture when there is excessive
fuel in the chamber some of it
condensates into onto the cylinder walls
and strips away the lubricating oil when
the lubricating oil is gone components
like the cylinder liners piston rings
will wear prematurely quote
quote again less oil means more friction
more wear and tear and a shorter life to
your engine in quote Firestone says
while some people let their cars idle to
warm up the Interiors other may actually
be trying to protect the engine because
of outdated guidance outdated guys
remember that
Firestone is Smart Motors Toyota both
say that most cars made before 1980 did
need two quote unquote warm up when it
was cold out this is because the old
cars had carburetors that regulated fuel
air mixture within the engine and could
not be adjusted for the air fuel ratio
in the cold blah blah blah
in cold temperatures carburetors blah
blah blah blah who cares
again 1980s carburetors blah blah blah
blah so instead of waiting for your car
to warm up in the winter most
manufacturers recommend driving off
gently after 30 seconds because the
engine warms up faster when the car is
being driven according to the U.S
department of energy quote this means
that your cold day driving routine
should look something like this bundle
up start the car scrape the ice off of
the window and mirrors and get in the
car and get going exclamation point in
quote Firestone says
just make sure you don't accelerate too
fast or rev your engine too much in the
first few moments you start driving in
the cold
quote this can add unwanted strain to
your bearings and flood the combustion
chamber with gas which in turn will take
miles off of your engine's life end
quote from Smart Motors Toyota now on
the flip side rules for thee but not for
me for owners of electric vehicles you
got to put EVS in here which don't have
a traditional engine the above
information doesn't apply according to
blog post on NAPA Auto Parts website
instead Napa advises EV owners to warm
up their car before they're unplugging
because it can help preserve your
battery range don't forget you got to
use all of your battery power to warm up
that cabin also your lithium batteries
suck at charging and discharging
properly in the cold among other issues
that the code plays on your electric car
quote EVS have to draw on electricity to
warm the interior if you enter a car
with a cold cabin and begin driving the
vehicle need to take from its stored
electricity to bring the inside air
temperature to a pleasant temperature
this will tax the ev's battery and leave
you with less driving range in quote
Napa says
so there you go guys us fuel injected
gas powered vehicles we can't warm our
cars up in the winter time we got 30
seconds and then we need to start
driving because we're going to destroy
our engine because
apparently the oil pump doesn't pump oil
continuously and when you idle your
engine doesn't get any oil and there's
so much of a rich fuel mixture that it's
just stripping all the oil completely
out of your engine and it's going to
seize up like a rock but if you have an
electric car don't worry let it warm up
plug it into the wall use that
electricity get yourself all nice and
toasty before you take off down the road
so let's unpack what we've read here
we're going to go over the article again
we're going to talk about Subaru what
they say in the owner's manual talk
about Subaru system and just think
logically about how the mechanics of an
internal combustion engine work and
dealing with cold weather so guys let's
unpack what we just read in that article
and uh man they're really trying to
scare some people that don't know much
about their vehicle so the first point
idling your engine cold or letting it
warm up uh the fuel is going to
completely strip the oil out of your
cylinder and it's going to cause high
friction and wear your pistons and your
cylinders more so they talk about the
oil pump providing oil to the engine
within 60 seconds of starting the engine
but then they make it seem like the oil
pump just doesn't work unless you're
driving
absolutely false the oil pump is
constantly supplying uh between 40 and
60 PSI of oil pressure
anytime the engine's running it's
mechanically linked to the engine it's
going to pop oil as long as it's running
so it doesn't matter if it's idling at a
thousand RPM or going down the road 3000
RPM is still going to blast oil
pressurized engine oil off to the
camshaft the cylinder head the rotating
assembly and the Pistons uh now what
they were talking about with the rich
mixture
fuel injected cars are way more accurate
at metering how much fuel they need to
combust compared to Old carbureted cars
that in the cold you had to choke them
and you had to worry about all kinds of
issues with getting it the Run well and
everything was mechanical and nothing
adjusted uh completely different animal
with the fuel injector car with a PCM
and the IAT sensor and all these other
sensors that precisely meter and add
just the right amount of fuel to get it
to run well and idlewale in the cold
until it warms up so it's not like the
fuel injectors are spraying 10 tons of
fuel in here which gasoline is a solvent
they're not spraying 10 tons of fuel in
there it's not washing out your
cylinders it's not washing your
cylinders out getting in the oil
diluting the oil
that's not a thing we would be seeing
lots of issues in the wintertime with
engine failures with oil dilution
um you know just all kind of things that
we don't see in the wintertime because
it's not a real issue they have taken
something in theory and blown it out of
the water so I think logically a minute
about the combustion process your piston
goes down pulls in the air fuel mixture
comes back up compresses it spark plug
fires Rams the Piston back down piston
comes back up on the exhaust rope pushes
the burnt gases out of the exhaust valve
well
if it's spraying too much fuel in there
when the Piston's coming down for the
intake charge and that air fuel mixture
is getting drawn in
when the Piston comes right back up
is still being splashed and supplied
with oil to lubricate that piston and
the cylinder it's I think they're
getting a little confused here I think
they act like this is an old carbureted
engine that just dumps fuel in like no
this is a computer controlled system
with variable inputs that monitor intake
air temperature the air fuel mixture all
this stuff and yes when you first start
you are in open loop and you have to get
closed loop when things get the
temperature but it's not as bad as they
make it sound on this article that I
think they're trying to scare people a
little bit here so that seems to be
their main argument that you're going to
strip away all the oil and the lubricity
for your piston and your cylinder by
letting your engine idle to warm up now
what is the difference between letting
it idle to warm up and driving it down
the road that air fuel mixture is going
to be just as Rich whether you were
driving down the road or idling cold
before you reach closed loop status
so what's the point here I don't
understand exactly where they're going
with this because the oil pump is
providing pressurized engine oil all
throughout the engine no matter what RPM
it's running at as long as it's running
and that rich fuel mixture that's
stripping away all the oil in your
cylinders is going to happen whether you
are idling the engine or driving the
engine while it is cold and not to close
loop status so
non-issue completely here so that's the
first thing I guess the second thing is
uh they're trying to reach out
environmentally and worried about
pollution and you know letting it idle
but it doesn't matter if it idles cold
to warm up or if you drive it cold to
warm up it's still going to be an open
loop until it reaches closed loop when
it gets to a desirable sufficiently warm
temperature so again if it's a minute or
seconds difference between it idling to
the sufficient temperature or driving to
that sufficient temperature is minimal
so again not really an issue so it is
funny that they mention for the EV
owners that hey keep plugged up warm
your car up till it's nice and toasty
and feels good inside before you drive
off make sure you don't use any of your
precious electrical Reserve out of your
battery to make yourself comfortable but
you gasoline-powered Vehicles no no no
you get the freeze and see your breath
as you drive down the road you don't let
the car warm up you don't get to defrost
your windows yes you took the ice off
but uh the cotton sensation fogged up
Windows no you don't get to sit there
until they defog where you can drive
safely and see because you're polluting
and damaging your engine you don't get
to be warm and toasty when you drive off
you better hope you have heated seats in
the heated steering wheel because you're
going to be freezing otherwise so that
in itself is ridiculous the way they
phrase that about the electric vehicle
versus the gasoline vehicle
electric vehicles are just not good in
the cold the batteries don't like the
cold they don't like to take a charge in
the cold they don't like to maintain
their charge in a cold and they
discharge not the way they should in the
cold there are lots of issues with these
electric cars when it comes to the cold
but that's not what we're here to talk
about but what does the manufacturer
actually State what does Subaru tell you
to do about your vehicle do you need to
warm it up and the answer is yes Subaru
wants you to warm up your vehicle before
driving if you've jumped into modern
Subaru let's say 2011 2012 model year or
newer you've started the car up and most
likely seen the little blue temperature
light so think about it for a minute
when that blue light comes on when you
first start your Subaru code your RPM
shoot up to about 1800 maybe 2000 RPM
and they hold there your engine's not
just idling at 600 800 RPM your engine
is idled up so it warms up faster that's
when the blue light is on you are high
idling warming up the engine in quickly
but safely and Subaru states that when
this RPM is high and the blue light is
on to leave the car in park or in
neutral with the parking brake on if you
have a manual transmission
you shouldn't be driving it while it's
in its warm-up procedure until it
sufficiently has warmed as they stay so
there you go so in the article again I
don't understand the whole idling the
car is bad for it most modern fuel
injected cars have a high idle while the
engine is cold and the RPMs will drop
once it is sufficiently warm so it's not
really a big deal between letting it
idle or driving down the road because
it's still idling up to warm itself up
faster than if it was just sitting there
idling as the engine idles when it's
already up the temperature which is
normally between 500 and 800 to 1000 RPM
depending on the engine make and
manufacturer now that blue temperature
light is an indicator of your engine
being cold that light will turn off when
the engine reaches a sufficient level of
warmth it says at in the owner's mail
that your engine should be warmed up
that the blue light will go off when the
engine is warmed sufficiently and that
you should not drive until the car is
that that sufficient temperature in the
section of the owner's manual talking
about winter driving it actually says
that while you are warming up your car
after you've removed any icer scrape the
windshields to check free movement of
your brake pedal gas pedal all of that
stuff before setting out so again in the
owner's manual it says before driving
and while you are warming up your car so
Subaru does want you to warm up your car
before driving so aside for the selfish
reason of our own personal Comfort why
should we warm up our cars and it comes
down to the mechanical side of it now
with your engine your fluids need to be
warm need to be warmed up before they
start flowing well and protecting and
doing what they should now that's more
so in line for people that see like
severe negative temperatures rather than
if it's like 32 degrees outside your oil
should flow as it should at that
temperature when you get down negatives
uh like teens and 20 is negatives that's
when you have some serious issues and
you should be running a block heater but
you want your oils and your transmission
fluid all that stuff to warm up before
you start driving you want your engine
coolant to reach about 100 to 120
degrees Fahrenheit before driving uh
it's just a good area that's
sufficiently warmed up before you start
driving down the road and another thing
with the warming up the engine it comes
down to your mail allergy your engine
block your Pistons your crankshaft your
cylinder heads all of this stuff expands
and contracts with temperatures so you
want to gradually get them up to a
stable temperature of about 120 degrees
before you start driving off so where is
the most of the heat in your engine
especially cold when you first started
up is in the combustion chamber if you
let it run for 30 seconds and start
gunning it down the road you're going to
put hot spots in the cylinder heads the
cylinder heads are going to heat up
faster than the block faster than the
crankshaft the rotating assembly
especially in a box or engine you want
to let it all warm up gradually and
together again 120 degrees Fahrenheit is
where you want to get minimum-ish right
around there before you start driving so
with a Subaru it's not as big of a deal
because your engine block and your
cylinder heads are aluminum and they'll
both expand and contract relatively at
the same rates and same amount but think
about this for a minute like in my
Duramax diesel engine I have a cast iron
engine block and I have aluminum
cylinder heads that cast iron reacts
differently than the aluminum to thermal
expansion and contraction so it's
actually more prudent that warm up my
diesel engine before I warm up my Subaru
engine because the Subaru engine has
aluminum heads and aluminum block and
they're going to basically react the
same way to temperature variants whereas
that Duramax Diesel with a cast iron
block and aluminum heads both of those
dissimilar metals are going to react
slightly differently to temperature
changes so again getting everything
acclimated slowly as the temperature
rises is better than just jumping in and
forcing a lot of hot spots in around the
cylinder heads and the Pistons and uh
you know just not great for the car so
the whole uh don't let your car idle to
warm up because you're stripping away
oil and going to destroy your engine
compared to let it warm up for 30
seconds and then run down the road and
put hot spots in your combustion
Chambers your cylinder heads and not let
the whole engine acclimate to the
temperature change slowly uh you know
that's perfectly fine so again weird
thinking weird logic in that article and
the experts that chimed in on it very
odd but again I'm no engineer so maybe I
don't know what the hell I'm talking
about maybe they got it right and I got
it wrong but just thinking logically or
at least my logical definition of
thinking it seems that warming up your
engine before driving is better for the
engine than letting it run for 30
seconds to a minute and end up going off
down the road but that's just my opinion
so guys what do you think let me know in
the comments below do you let your
engine warm up do you not let your
engine warm up why do you or why don't
you do you think it's dumb to let it
warm up let me know in the comments
below do you think it's dumb not to let
it warm up let me know in the comments
below thank you guys all so much for
watching hope you enjoyed the video I am
about to go into the house and get
warmed up because I am freezing out here
I'm sure you've probably seen my breath
uh this video will probably go up on
Saturday or Sunday Sunday being
Christmas day Saturday being Christmas
Eve so merry Christmas happy holidays to
all of you thank you all for the views
for 2022 and I will see you all in the
next video
foreign
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