Ouch - lots of bad advice about the necessity to warm up the Eagle in proper condition for longer that a few minutes.
An Eagle or any vehicle that is warmed up for more that a few minutes is being worn out much quicker than the following method. Imagine me getting into my 82 Eagle in Edmonton at -24 C.
Pump gas twice, turn key, jumps to life, clean windshield of snow or ice. (say 4 minutes)
Drive away without using high revs. This also works at -39 C in the Canadian Arctic. Cabin heat in 3 blocks of slow driving.
By idling for 10, 20, 30 minutes the fluids do not warm up fast. Proven by lack of cabin heat. This results in cold engine components beating each other to death!!!!!!!!!
By driving away without revving engine the fluids warm much faster and thus less wear on the internal components of the engine. An even cabin heat in a few blocks.