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Old 08-15-2010, 10:16 AM
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idle time

i've been searching, but haven't really found a good answer yet. I'm wondering when/how long it is fuel efficent to let the truck idle and when to shut it off? I'm looking into getting gauges so that i know how long it takes to let it cool off.
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Old 08-15-2010, 11:28 AM
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Cool off as in EGTs? I usually shut it off 375 and under. Doesn't take much to get to 375. Longer to get to 350 and under.
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Old 08-15-2010, 11:49 AM
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i just want to know when is it cheaper fuel wise to shut the truck off or let it idle.
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Old 08-15-2010, 12:27 PM
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It's always cheaper to shut it off right away. But cheaper by maybe a few cents. I've heard these trucks use somewhere around 1/2 a gallon per hour? Which is 1/120th of a gallon a minute. So using about $3/gallon (it's like 2.70 here), that's $1.50/hour. Roughly .025 cents per minute. SOOOO it doesn't matter Compared to old IDIs and such, the amount of fuel used to start up is negligible which is why I'm not even accounting for that.
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Old 08-15-2010, 03:11 PM
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i shut mine down when it hits 250*
sometimes when you get off the freeway pulling it takes a while to cool down
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Old 08-15-2010, 07:43 PM
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250? Man how long does that take?
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Old 08-15-2010, 07:48 PM
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Most trucks will excede 250 at idle even from cold start up..... When you have the gauge, just idle till at 350-ish. Or about a minute after a long drive.
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Old 08-15-2010, 08:26 PM
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Quote:
Originally Posted by jesilvas View Post
250? Man how long does that take?
sometimes it seems like forever
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Old 08-16-2010, 06:31 PM
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man cant wait to get my pyro.. i just let her idle a lil bit but ya...
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Old 08-16-2010, 06:37 PM
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i mean like he said u leave more change is the dish at the counter than you are burning by leaving it running.. mine never gets shut off if its just running into the gas station autozone... runnin back into the house to grab something etc.. winter time if its cold may stay running while im in eating or a walmart or such hate cold vehicles
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