What rpm's do you guys shift at for economy? - Ford Powerstroke Diesel Forum
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Old 08-29-2009, 05:52 AM
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What rpm's do you guys shift at for economy?

I know... 7,000 lb truck.. economy.. funny.

But about which rpm do you guys shift at? In my honda I shifted about 3k rpms for max economy, though 3k rpms in this truck is almost red line. I've been shifting the truck about 1500 rpms maybe? I drive it so that you can barely tell its being driven and I dont let the turbo spool at all. This seems like the logical shift pattern for economy but lets hear it from the Pro's..


Matt
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Old 08-29-2009, 05:58 AM
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just under 2000
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Old 08-29-2009, 06:02 AM
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And here is another question.
I know all cars are different.. but do these like very very light throttle to get up to speed, or just barely touching the diesel pedal?

What kind of mileage you get shifting at around 2g?
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Old 08-29-2009, 06:42 AM
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I've got a 6.0 with the 6 speed. From 1st to 2nd, I'l shift about 1500 and work my way to around 2000 when I shift Into 5th. See what I'm saying? My economy will be a little different from yours, but when I do this and drive around 55mph, or draft a bigger vehicle at higways speeds, I'll see anywhere from 20 to 22 Mpg. I drive like this most of the time, but every once in a while I drive it like I stole it. These trucks love and need to be run hard every once in a while.

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Old 08-29-2009, 07:02 AM
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i wuz told by a teacher in a diesel school itz good 2 shift around 2K RPM !!!
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Old 08-29-2009, 07:27 AM
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Quote:
Originally Posted by kimber_da View Post
I've got a 6.0 with the 6 speed. From 1st to 2nd, I'l shift about 1500 and work my way to around 2000 when I shift Into 5th. See what I'm saying? My economy will be a little different from yours, but when I do this and drive around 55mph, or draft a bigger vehicle at higways speeds, I'll see anywhere from 20 to 22 Mpg. I drive like this most of the time, but every once in a while I drive it like I stole it. These trucks love and need to be run hard every once in a while.
Ya as a matter of fact, I just went and ran some imaginary errands and I found myself doing the same thing.. slowly increasing the RPM in which I would shift at. Is that 20-22mpg city, highway or mixed?

But I know what you mean about the truck begging to be driven hard; it seems to love it so far. And it's hard to resist. Ya always gotta play with your new toys!!

Quote:
Originally Posted by pete37922 View Post
i wuz told by a teacher in a diesel school itz good 2 shift around 2K RPM !!!
good info, thank you
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Old 08-29-2009, 07:57 AM
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with a 6.0 and vgturbo, i was told by a ford diesel tech that they should be worked and run at high rpm's to keep the veins from getting crap built up on them and then sticking. Not run high rpms all the time but when u can stretch her legs when u can. u don't want it to load up ( like a 2 stroke) lol it may effect your fuel economy a bit. look at the way a auto shifts when u get on it it'll hit around 3000rpms before it shifts. with my 6speed i get around 19.5 mpgs
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Old 08-29-2009, 08:00 AM
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Ya you def. need to strut these things out once in a while to prevent loading up. Same with gassers too. But I think moreso on the diesels.

Is that 19.5 mpg city, highway or mixed driving?
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Old 08-29-2009, 08:12 AM
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The reason why you need to run higher rpms on the 6.0's is because the turbo has the moving exhaust vanes inside the exhaust side of the turbo, if you dont get on the fuel sometimes they will not get exercised like they need to be, thus they will start to stick in place.
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Old 08-29-2009, 08:13 AM
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Quote:
Originally Posted by 85_305 View Post
Ya you def. need to strut these things out once in a while to prevent loading up. Same with gassers too. But I think moreso on the diesels.

Is that 19.5 mpg city, highway or mixed driving?
19.5 highway. @ around 72-75 mph. in town or rural roads (home) it'll normally get a lil higher, 55-60 mph seems to be the sweet spot for mine
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