6.4L Power Stroke Engine and DrivetrainDiscussion of the 6.4L Power Stroke diesel engine and drivetrain in the 2008 Super-Duty trucks. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.4L Power Stroke engine.
I've read Jay's article on breaking in a new engine but I have a dilemma. I'm going to be getting my truck next week (I sincerely hope) and will be travelling ~230 miles by freeway that weekend. The question is; will varying the speed (55-75) and perhaps moving in and out of tow/haul periodically, vary the RPM's enough to avoid "bad things" during the <1,000 break in period? Or is this something I should be worrying about. This is my first Diesel ever and would appreciate any/all information or suggestions.
I really don't want to take my other vehicles when I have a brand new toy!
Thanks for any info.
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On Order: '08 F-250, Lariat, 6.4L, Auto, CC, SB, 4x4, Dark Shadow Grey/Medium Stone, Audiophile. Due on 5/11/07!!
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The question is; will varying the speed (55-75) and perhaps moving in and out of tow/haul periodically, vary the RPM's enough to avoid "bad things" during the <1,000 break in period?
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Yes.
Stop-and-go city traffic is the best condition for breaking in a brand new truck. But if you hafta hit the superslab with a new truck, then here's how to do it:
1. Take every exit, baby the brakes as much as possible, then get right back on the superslab and go on down the road.
2. One goal is to maximize throttle-off deceleration, so do as much of that as you can safely do at each exit - using the brakes only when necessary.
3. Don't use cruise control for anything for the first 500-or-so miles.
4. Go about 5 miles or 5 minuites at each speed. Assuming a speed limit of 70 MPH, then your speeds
should be:
55
65
73
60
70
Do that in overdrive, then repeat the sequence in tow/haul mode, then back to overdrive.
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My Sierra Blanca is a '99.5 PSD CrewCab hot-rod Towing Machine! BTS tranny; TurboRamAir intake and 4" stainless turbo-back exhaust; DP-Tuner tunes flashed into an Edge Evolution tuner; ISSPRO EV gauges and TTM; AIC; SP-Diesel exhaust brake and torque converter controller. I special-ordered it new and plan to drive it until it quits.
I just picked up my F350 today. It is my first Diesel truck and I want to make sure that I break in the Engine the right way. I tried to find the article that Diesel Jay wrote but can't find it. Can someone find it for me. Love the new truck. I went from the Dealer to the Line-x store to get the bed done. Will pick it back up tonight. I can't wait.
Don
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2008 Ford F350 CC LB SRW Lariat
Dark Shadow Gray w/stone interior
6.4 PSD Auto
All options but Sirius Radio
Job 1
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I tried to find the article that Diesel Jay wrote but can't find it.
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Scroll up to the top of this screen and click on "contents".
Then click on "featured articles".
Then scroll down to "Breaking in..."
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My Sierra Blanca is a '99.5 PSD CrewCab hot-rod Towing Machine! BTS tranny; TurboRamAir intake and 4" stainless turbo-back exhaust; DP-Tuner tunes flashed into an Edge Evolution tuner; ISSPRO EV gauges and TTM; AIC; SP-Diesel exhaust brake and torque converter controller. I special-ordered it new and plan to drive it until it quits.
I think Smokey is pretty much correct. I would add that it is not a good idea to use full throttle in lower gears, but after a few miles, it is a good idea to use a little full throttle in high gear, say like pulling a good grade at 70 or so. Rapid engine revolution increases are not good. Engine load is good.
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2003 KR F-250 4X4 CC SWB, 6.0, 5 Speed Auto, 3.73 Axle, no Limited slip. Rhino bedliner, Unicover bed cover.
Built on February 19, '03
#2 93 F-150 XLT, 5 Liter, Auto, 4X4, X Cab. 231,000 miles. Uses no oil between changes.
About 50 years worth of reading, reading, reading, understanding, then reading some more. Growing up on a farm in the 1940s and 1950s under the tutledge of an excellent instructor - my father. And reading papers and journals of engineers and scientists, not ramblings of good ole boys. And being a lot smarter than the average bear. [img]/ubbthreads/images/graemlins/wink.gif[/img]
Did you read Diesel Jay's article? Most of my technique for breaking in a brand new pickup while on a freeway trip is based on Jay's comment: "3. DO drive the engine at varying RPMs and speeds until about 1000 miles. The idea is to alternately heat and cool the rings under varying RPMs."
But take that a step farther and you want maximum throttle-off deceleration without using the brakes. That helps the cooling of the rings Jay mentions. That's why you want to take every exit when forced to drive on the freeway during the first few hundred miles of breakin. And that's why I said that city traffic is the perfect condition for breakin, but if you have to get on the highway, then simulate city driving as much as you can without getting run over.
That's why with a 70 MPH speed limit, about 55 MPH is the slowest you want to cruise. You'll get slower speeds (and RPM) at each exit. And the "ticket limit" is usually 74 MPH, so that's the max speed you want to cruise at.
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