Quote:
Originally Posted by HunterDave
I'm curious as to why you think that you need to idle it for 20 minutes to warm it up.
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For my truck it is to defrost the windshield. If I don't let it warm up properly 5 mins into my drive during the winter I end up with the inside of my windshield fogging up so bad I have to pull over to let it defog. This is due to when the engine finally puts warm air into the cab it causes the windshield to fog up to the point of not being able to see out it.
For me it is a safety issue to high idle my truck when I start it in the morning.