Butt-O-Meter...

[richc22a]

At almost 50,000, my truck seems to have 'juiced up a bit". It seems in this past week, it has increased noticeably in power. I do play a bit, locking up the rear end, taking traction control off, playing 'conservatively' saving rubber. The rear end seems to break loose easier, and seems to pull harder.

I would not think the compact iron block would break in quicker than the old navistar motors. But then, with the newer fuel that has less lubrication....

From a dead start, or from a roll, it seems to accelerate quicker..by quite a bit. I know my impressions are extremely subjective. But after starting each day at 6:30, in and out of the truck, and shutting it down at 7-9 pm, I got a pretty good handle on what it will do. And this Beast seems to be waking up a bit...

[Painted Horse]

You got a tank of summer diesel fuel and used up all the winter fuel.

I've never noticed any of my Powerstrokes changing much as they broke in. It's all pretty subjective and as you say, Seat of the pants.

[4x4ord]

Originally Posted by richc22a

At almost 50,000, my truck seems to have 'juiced up a bit". It seems in this past week, it has increased noticeably in power. I do play a bit, locking up the rear end, taking traction control off, playing 'conservatively' saving rubber. The rear end seems to break loose easier, and seems to pull harder.

I would not think the compact iron block would break in quicker than the old navistar motors. But then, with the newer fuel that has less lubrication....

From a dead start, or from a roll, it seems to accelerate quicker..by quite a bit. I know my impressions are extremely subjective. But after starting each day at 6:30, in and out of the truck, and shutting it down at 7-9 pm, I got a pretty good handle on what it will do. And this Beast seems to be waking up a bit...

So what is its 0 - 60 time?

[richc22a]

I'll check... 0-60....

[DavidPhillips]

Tires are worn out, starting to spin?

[dieselkane]

Now the big question on everybody's mind, what are you getting for MPG now that you've racked up some miles

[richc22a]

I just finished a 1250 mile run, will do the flip flop next week. I hand calculated, will post after the flip on the same highway. I ran the speed limit, usually 75, hit 86 up the mtn out of Phx. Bucked head winds, lowest was about 14, highest 18.41. One helluvalotbetter than the stock 6.4, and the 6.0. Not a Toyota Pious...but pretty darn decent for a 1 ton mac daddy chick magnet...

[richc22a]

Tires not worn.....yet!! Actually on my third set, these will last a bit longer, I like THESE!!

[Lead Foot]

I would not think the compact iron block would break in quicker than the old navistar motors. But then, with the newer fuel that has less lubrication....

less lubrication? I Thought they made sure it had the correct amount of lubricant ?

At what what Mileage do you feel a Diesel Motor breaks-In ?

You say Your at 50,000 miles on the ODO ...I have always felt the Diesel motors Broke-In around 35,000... This of course would have a Lot to do with How hard the truck was worked during break-in ,

My Rule of thumb has been,Gass motors break-in around 10,000 and Diesels 35,000 ,I'm going by what i have seen with My own trucks nothing else....Your truck may Very :~)

Keep us posted on your findings, Thanks LF

[DavidPhillips]

My 6.4 was really sounding sweet when I let it go. 75000 miles.