4 ms·

> The only practical reason to let them warm up before moving is to get some heat into the passenger compartment. Which can be pretty critical for safety - my

> The only practical reason to let them warm up before moving is to get some heat into the passenger compartment. Which can be pretty critical for safety - my breath fogs the windows if I don't let the engine warm up for at least a couple minutes before driving when it's -20C.

tharkun__ 5y ago
This makes no sense to me. I drive at or around those temps all the time. Sure today it was only -16C but it has been like that for forever now. Like the GP since about November. Some breaks with warmer weather, some stretches of -25C for weeks on end. I have yet to have my breath fog up the window even if I start the car and drive off right away. Of course it's cold. Of course the radio display is sloooooow. You can feel how much slower releasing the clutch is. Can't get into first gear at all unless the car is fully stopped either. So rolling stops need to use 2nd gear. Make sure you don't use the washer fluid. Scrape everything free. Even with pure "-40" fluid you will get it to freeze and you will have to wait or use the wiper fluid constantly until things get warm. Have the blower on de-fog for the windshield and even if you don't wait even a second before driving off you should have no issues at all. Even the cold moving air is enough to keep things fog free. And defog actually runs the AC too, not that it's needed when the cold outside air you're blowing onto your windshield there has much need to be dehumidifierd.
- SECProto 5y ago
  Not sure what to tell you. I do all those, obviously, I live in a place where I also experienced -25 for couple weeks straight straight (and never anywhere close to -40). Agree on clutch and LCD, agree on not using washer fluid and scraping the windshield properly, and I'd add on lift your wiper blades now that the sun has some heat as your wipers will easily freeze on top of the mini-greenhouse that is your dash. But if I hop in my car and drive away immediately, the windshield will be foggy before I've gone a km - regardless whether I have the compressor (defog) on or not.

tharkun__ 5y ago

This makes no sense to me. I drive at or around those temps all the time. Sure today it was only -16C but it has been like that for forever now. Like the GP since about November. Some breaks with warmer weather, some stretches of -25C for weeks on end. I have yet to have my breath fog up the window even if I start the car and drive off right away. Of course it's cold. Of course the radio display is sloooooow. You can feel how much slower releasing the clutch is. Can't get into first gear at all unless the car is fully stopped either. So rolling stops need to use 2nd gear. Make sure you don't use the washer fluid. Scrape everything free. Even with pure "-40" fluid you will get it to freeze and you will have to wait or use the wiper fluid constantly until things get warm. Have the blower on de-fog for the windshield and even if you don't wait even a second before driving off you should have no issues at all. Even the cold moving air is enough to keep things fog free. And defog actually runs the AC too, not that it's needed when the cold outside air you're blowing onto your windshield there has much need to be dehumidifierd.

SECProto 5y ago
Not sure what to tell you. I do all those, obviously, I live in a place where I also experienced -25 for couple weeks straight straight (and never anywhere close to -40). Agree on clutch and LCD, agree on not using washer fluid and scraping the windshield properly, and I'd add on lift your wiper blades now that the sun has some heat as your wipers will easily freeze on top of the mini-greenhouse that is your dash. But if I hop in my car and drive away immediately, the windshield will be foggy before I've gone a km - regardless whether I have the compressor (defog) on or not.