Yup,... and the manual also says to use 87 octane on your car

Road and Track magazine says.....
In cold weather,..warm it up for 1 minute just to make sure that oil thins out enough and lubricates all the valves, pistons , etc.
Also, remember metals tend to shrink with extreme cold temps. and expand with heat. If someone revs their car past 3500 rpms @ 30 degrees or below,... they'll be decreasing the life of the engine with out even going anywhere. They stressed that if you think your car needs warming up,.. at least drive it somewhere,..you won't be polluting the air more than you have to by sitting down in your car.

They also said,.. in the warmer climates,...30 seconds is sufficient.