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Warming up your car before driving in cold weather can damage the engine (2016)

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Re: Warming up your car before driving in cold weather can damage the engine (2016)

#51
post #44

Earlier quoted context omitted.

I don't want to be That Guy[1], but an EV can run the climate control, warm the car and defrost the windows with absolutely no maintenance worries at all. Teslas can do it remotely while you sip your coffee or pack up your ski gear. [1] I totally want to be That Guy

The cold still damages your EV’s battery. It is still, after all, a lithium ion battery.

The battery is heated to avoid that damage though. Nothing does this in an ICE car.

Re: Warming up your car before driving in cold weather can damage the engine (2016)

#52

For me the benefits far outweigh the increased wear on the engine. I don't really need my engine to last 400k miles like it can in perfect circumstances. I need fog free windows, be comfortable driving the car without gloves on making the steering slip. To be able to focus on getting around and not shivering. I don't drive these days but back when I did those were all issues I had for my 5am start getting to work. An…

> I need fog free windows Personally I can't drive with ice on my windows. Can't really see outside and I'm pretty confident that's illegal. Like 80%, but I'm not a lawyer.

100%: Driver must keep the car in state of driving - or something like that - It includes everything.

Re: Warming up your car before driving in cold weather can damage the engine (2016)

#53

I'm sure the cited expert really is an expert, but this article fails miserably at conveying any cohesive understanding from them to you. It's full of conclusions that don't follow from their leading statements. My understanding about warming up an engine before putting load on it had nothing to do with fuel or power steering fluid, it was about thermal expansion of all the machined parts that suffer wear if they are…

Absolutely. The risk of putting load on the engine before the moving parts and oil have reached operating temps is far greater than the threat of tiny amounts of gasoline washing residual oil from the cylinder walls or thinning the oil.

The only risk described here applies to prolonged idling only and is a long term risk mitigated by reasonable elwarmuo and oil changes. The short term risk is the rotating assembly and value train is far more immediate.

Fuel injection has convinced people that they can just jump in a cold car, fire it up and be fine. Doing so, especially in extreme cold is just incredibly damaging.

Re: Warming up your car before driving in cold weather can damage the engine (2016)

#54
My two cents on this, based on personal observation of driving habits: The real problem is that people will warm up the engine and cab, and then drive the vehicle like the entire thing has warmed up. Something that couldn't be further from the truth. Your tires will be low on air pressure. The entire driveshaft will be dry and its lube will be more viscous than normal. The digital traction controls and diff locks could be stuck (or at abnormally slow to respond).

So, IMO, while there's benefit to letting an engine warm up, keep it under 2k RPM for the first couple of miles; until the entire drive train is also warmed up.

Re: Warming up your car before driving in cold weather can damage the engine (2016)

#55
post #5

here in alaska we use block heaters as a must have. Cold oil doesnt recirculate very well, of course a chronicaly cold engine, with cold oil, is going to display excessive wear. so, why "warmup" a vehicle? two parts... 1] old model vehicles dont have digital engine control its electromechanical. cold carburetors run out of tune, unless you have auto choke and idle tuning. so the block needs to be warm for efficiency…

I love how the examples are always Alaskan winters but you see people idling their car to warm up everywhere and often in moderate temperatures. For most, it's a comfort thing and not necessary.

If you're even using a car at all, then you have already decided that comfort and convenience are necessary.

Re: Warming up your car before driving in cold weather can damage the engine (2016)

#56
post #51

Earlier quoted context omitted.

The cold still damages your EV’s battery. It is still, after all, a lithium ion battery.

The battery is heated to avoid that damage though. Nothing does this in an ICE car.

While true, how long can the car heat the batteries before it's practically unusable because the battery has depleted so much you need to charge it again before driving to work? Not everybody has a charging port at home, especially in Europe.

Re: Warming up your car before driving in cold weather can damage the engine (2016)

#57

Earlier quoted context omitted.

Note that, for cost reasons, F1 teams are limited to 3 engines per driver for the season, with penalties for starting grid positions for exceeding this figure.

Right but that doesn't mean they can't rebuild the engine for each race weekend.

The F1 engines are sealed by the FIA. They are not rebuilding them and doing so would result in disqualification.

Re: Warming up your car before driving in cold weather can damage the engine (2016)

#58

I'm sure the cited expert really is an expert, but this article fails miserably at conveying any cohesive understanding from them to you. It's full of conclusions that don't follow from their leading statements. My understanding about warming up an engine before putting load on it had nothing to do with fuel or power steering fluid, it was about thermal expansion of all the machined parts that suffer wear if they are…

Absolutely. The risk of putting load on the engine before the moving parts and oil have reached operating temps is far greater than the threat of tiny amounts of gasoline washing residual oil from the cylinder walls or thinning the oil. The only risk described here applies to prolonged idling only and is a long term risk mitigated by reasonable elwarmuo and oil changes. The short term risk is the rotating assembly an…

I work in this industry (designing tools for automotive diagnostics), and have heard many arguments either way WRT warming up engines; I do not understand yours.

Re: Warming up your car before driving in cold weather can damage the engine (2016)

#60
post #44

For me the benefits far outweigh the increased wear on the engine. I don't really need my engine to last 400k miles like it can in perfect circumstances. I need fog free windows, be comfortable driving the car without gloves on making the steering slip. To be able to focus on getting around and not shivering. I don't drive these days but back when I did those were all issues I had for my 5am start getting to work. An…

I don't want to be That Guy[1], but an EV can run the climate control, warm the car and defrost the windows with absolutely no maintenance worries at all. Teslas can do it remotely while you sip your coffee or pack up your ski gear. [1] I totally want to be That Guy

I am the guy that preheats his Honda to perfection. I will fly like a bat out of hell out of my front door in my boxers to start the car and run back inside to get ready for another 30 minutes. Yes, I am a total badass.

I’m not worried about maintenance because that is a fact of life. For Tesla’s too (mostly defects).

If your car breaks down shortly after you start driving it and the cabin is ice cold you’re in trouble. At least in a rural area.

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