this post was submitted on 09 Feb 2024
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Cue the sound of me revving the engine to heat the defrost after I half ass the scraping
I just got a manual for the first time in a while and I forgot how great driving at 45 mph in 2nd gear to warm up your car is.
Most (all?) automatics have a couple gears to manually select.
Or at the very least you can put it in "L" which will keep it in a lower gear longer, which burns more fuel but warms the car up faster.
Though I'd only do this on really cold days because it's incredibly inefficient.
Wonder what’s more inefficient, a little extra wear and tear, and gas for low gear revving, or letting it warm up for 10 minutes.
Iirc, most car manufacturers don’t recommend letting it warm up on idle. Most say to take of at a moderate speed to warm the engine up “properly”.
I know that driving a car will get it up to operating temperature faster, but whether it's more efficient to let it idle for 10 minutes or to drive in a lower gear could be a toss-up.
This is why we need the MythBusters to get federal funding so they test these things.
The car will override it if it wants to