Do you let your car warm up?

[B C]

Do you let your car warm up?

I have heard of a couple extreme cases where a guy made his wife walk to work in the winter a few blocks away because not letting it warm up was bad for the engine.

 

I have also heard of a guy that wouldnt even think about flogging the car until he felt that even the diff oil was up to temperature.  

What do you say?

 

 

 

 

 

 

[rampelsauce]

Fixed

 

This hurt my heart.

[i_love_cars]

nice thing with the n52/54/55..er..basically any new bmw  is the electric water pump/thermostat . it starts blowing heat very quickly because it keeps the pump off or on very low till the coolant warms up.. and even when its cold the factory tune limits boost to somewhere around 5 psi till oil is 120f

 

i let mine run for like a minute when its super cold. otherwise i start driving

 

"nice" is relative to context - being there is 0 indication that your water pump is about to fail because it's electronic instead of mechanical. So then you get to be like me and one day pull into work only to have your orange water temp light come on and 2 seconds later go red and piss water all over the ground    

ahah...ha....ahhhhhhh fuck my life.

[Bobdudeman1988]

You could always run a bleed cycle and listen to it once on a while, and i hate the cost, but ive had a mechanical pump fail on a 1.8t vw suddenly without a warning, and it cost the entire valve train when it spat the t belt. Can we complain too much..? Lol

[HipMF]

Remeber too that the oil pump speed is propotional to engine speed. Oil doesn't compress, so the flow volume should be roughly proportional to rpm. My gut feeling is that an engine spinning 4000rpm doesn't require 4x the oil flow of one that's spinning 1000rpm. The pump is likely sized to provide barely adaquate flow at idle so that there's not exsessive losses and heat generated at higher rpms.

[HipMF]

fwiw, my owners manual says NOT to let the car warm up by idling it...

[straight6pwr]

i generally follow the mantra somewhere else also mentioned: easy 'warm up' rpms until the car is up to temp, and in the winter i start the car and let it idle while I clear windows of snow and ice.

[6670charger]

I seem to have the best luck if I just start it and drive. Seems like if I let it mine idle for any length of time on a cold start up, I end up with junk in my ICV and the car starts running like crap. If I just start and go I don't seem to have too many problems. I live in town, so I don't end up going much over 30mph for the first 5 minutes or so anyway.