Do I warm up my car?
Not any more!
The practice is ancient, and unnecessary.
I used to warm 'em up, during the "Era", of carburetors, and point induction/coil field collapse ignition days.
(Few might remember...when gasoline was 20 cents a gallon.)
Now that
EVERY vehicle I own, (except my Harley FatBoy)
has Fuel Injection, and some form of High Energy Ignition, along with a crank-case o' synthetic motor oil.
THERE IS NO NEED to "warm up" and waste that precious fluid!!!!!!!!!!!
Some day, I look forward to the day, Saudi Arabia, and "BIG OIL" can't give their products away!!
I will prolly be dead & gone.