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A comment on NYC allows citizens to report idling vehicles in exchange for a cut of the fines. Parent comment

Re:NYC allows citizens to report idling vehicles in exchange... by ashwagary on Sunday March 20, 2022 @01:49AM (#30740473)
>allow no more than about 30 seconds to a minute of standing

This heavily depends on the temp range you are discussing.

Lubrication is the least of your worries at certain temperatures. The engine block and pistons being too cold cause problematic expansion and contraction which can lead to block cracks or permanent engine knock issues from what I've seen. This will eventually lead to needing an engine replacement.

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Re:NYC allows citizens to report idling vehicles in exchange... by londons_explore on Sunday March 20, 2022 @05:57AM (#30741412)
But if driven hard while cold, it will warm up faster, reducing the damage that can be done.

It's a trade-off, and nobody seems to have done the science properly - it's just mechanics and engineers guessing which effect is worse.

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Re:NYC allows citizens to report idling vehicles in exchange... by ashwagary on Sunday March 20, 2022 @08:08AM (#30741988)
>But if driven hard while cold, it will warm up faster, reducing the damage that can be done.

Is this sarcasm? I can't tell because it is literally the opposite of the truth.

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