Opinions on Idling to Warm Up - Ford Powerstroke Diesel Forum
General 6.7 Discussion (2011-2016) General 6.7 Discussion

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post #1 of 29 Old 12-11-2019, 06:59 AM Thread Starter
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Opinions on Idling to Warm Up

2015 F350 CCLB 6.7 56xxx

I have my 6.7 for about 3-4 weeks now. I upgraded from a 1997 F250 7.3 with 164xxx.

Its been getting into the single digits/negatives here in Wisconsin. I like to start my truck in the morning to get the frost off the windows if there is any.

I was used to starting my 7.3 in the morning and letting it idle for 10 to 15 before going to work when it was colder. So when I got my 6.7, I got into the same habit. Certain locations I only have a 15 mile drive. I plugged in my 7.3 when it was under 20 degrees and my 6.7 I am still experimenting with since its the first week that its been really cold.

I notice my "cleaning exhaust system" notification comes on more often. Usually if comes on, I will take a longer drive at freeway speeds to clean. After doing a little research on letting theses 6.7 warm up, I've seen mixed opinions.

What do you guys think?
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post #2 of 29 Old 12-11-2019, 08:13 AM
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I don't think I'd idle the truck that long, but that's just me. I usually fire our 6.7, situate my wallet, phone, etc. Set my climate control and go.

I'd say that process takes 2 minutes? I don't feed it a hot supper until it's good and warm, though. I'm in Florida, and it hasn't been *that* cold yet, but where I'm at it can get surprisingly cold for "The Sunshine State".

My 6.0 likes to yawn and stretch a bit before heading out in the morning, but only when it's really cold. Maybe 3 - 5 minutes.

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post #3 of 29 Old 12-11-2019, 09:25 AM
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Start the truck, and have another cup of coffee
prolly takes that long to get the frost off anyways

10-15 minutes of idle time on a cold morning is about right
you said 15 mile drive -- so, basically the idle time doubles your runtime
the "cleaning" is affected because of the cool temps, will get back to normal in the summer

In my defense, I was unsupervised
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post #4 of 29 Old 12-11-2019, 09:57 AM
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Just my thoughts. 10-15 minutes is too long. My 1999 7.3l I would let it idle for about 5 minutes rarely 7min before I just drive easy. this was my policy even in -20s unless I was towing I would let it high idle for 10 before moving. Had maybe an 8-11 mile drive at that time. With your new ride having the emissions components it would be better to idle less and just do a nice long drive on the weekends and once its warmed up get on the throttle a bit and let it complete a regen/fully warmed up etc.

The regen cycles kill fuel economy and its best to just do a complete cycle on a nice highway drive weekly then let it do partials multiple times a week etc.

Again just my thoughts
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post #5 of 29 Old 12-11-2019, 11:33 AM
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Plugging in the block heater would be more effective than a 10-15 warm up time on a cold day. Honestly the 6.7L really doesn't need to be plugged in, but temps in the 20's or lower it's a better choice if you want a warm truck to drive to work.



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post #6 of 29 Old 12-11-2019, 12:59 PM
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Quote:
Originally Posted by DuncanMagerl View Post
What do you guys think?
My neighbor has a 2015 with 500,000 miles. Original engine, trans, emissions. Deleted less than a year ago. I hear him start it up (remote start) a couple times before he actually drives off. He must have a ton of idle hours. It's worked for him.

I'm more of a fan of a good minute to situate my stuff, then drive off and let her warm up on the road.

As long as it gets up to normal operating temp for a few miles, I'm okay either way.
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post #7 of 29 Old 12-11-2019, 01:12 PM
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The 6.7 is not like the 7.3 where it needs to idle for 20 min to be fine to drive. Have a timer set on your block heater for 30 min before you start it and go.
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post #8 of 29 Old 12-11-2019, 02:18 PM
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Quote:
Originally Posted by hboy View Post
My neighbor has a 2015 with 500,000 miles. Original engine, trans, emissions. Deleted less than a year ago. I hear him start it up (remote start) a couple times before he actually drives off. He must have a ton of idle hours. It's worked for him.

I'm more of a fan of a good minute to situate my stuff, then drive off and let her warm up on the road.

As long as it gets up to normal operating temp for a few miles, I'm okay either way.

Holy smokes, 500k on a 2015? He must be a hotshot driver? I'd be curious to know what his idle hours and total engine hours are. That's even more impressive if the DPF and EGR made it that entire 500K without major service or replacement.
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post #9 of 29 Old 12-11-2019, 02:24 PM
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Originally Posted by mjs2011 View Post
Holy smokes, 500k on a 2015? He must be a hotshot driver? I'd be curious to know what his idle hours and total engine hours are. That's even more impressive if the DPF and EGR made it that entire 500K without major service or replacement.
I know right... I figured he had over 400k on that stuff before the delete. But have not seen the hours.
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post #10 of 29 Old 12-11-2019, 07:05 PM
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I used to remote start for 10-15 minutes but found that the block heater is much more efficient without the toll on the emissions system.

I have mine on a timer for about 3 hours before I leave the house in the morning, Ford says that 3 hours will get it as warm as it's going to get. I found that on cold mornings (0-20 degrees), the block heater keeps temps approximately 30-40 degrees over ambient temp. I typically remote start it as I walk into the garage in the morning, load my stuff in the truck, unplug it and go.
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