i usually wait till the needle moves on the temp. gauge

 

long enough to clean it off.

 

I drive about two blocks to work, so its more of a waste of gas to let it warm up...clean the windows and go to work...but when i actually do go for a longer drive i normally let it warm up for about 10-15 minutes so she is nice and warm when i get in.

 

When I was living in nevada over the summer I would just get in and go because it was 100 degrees out and I need the wind to power my ac.

Now that its winter and cold out I let it warm up for a few minutes. when I lived in tahoe over the winter and my toilet seat would freeze overnight, I let my truck warm up for ten minutes at least.

 

In winter when its below 40 or so, I give it 10 minutes with heater on full blast. I don't take it out of park until the rpm drops to normal warm idle

 

A couple minutes when it's in the 35-50 range. When I go winter camping and it's in the teens or single digits then i let it warm for 10 minutes or so.

 

I let it warm for about three minutes because I don't like leaving her unattended... she gets cranky when trying to shift the trans if I let her sit for to short of a time.

 

Not long unless it's below 0 (this is MN). It has synthetic in it front to back and I drive gently until the heat gauge is moving.

At least the jeep warms up. I've had small cars where I swear the auto choke didn't shut off for the whole of January, even with the radiator covered.