Engine Breakin How Many Miles?

john2669 · 11-01-2009, 08:42 AM

Have a 07.5 with only 17K on her, I have noticed the the truck is starting to sound different (out the exhaust) and the engine is really starting to respond. My question is, how many miles does it usually take for these 6.7's to settle in? Thanks

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07.5 2500 4x4 6.7L, EJ w/ Att., MP-8,S&B CAI, Quadzilla Boost Fooler,Aero T Muff , BAPD Turbo Down Pipe to Stage 1 H&S kit, EGR Delete, Banks Dual Monster Exhaust out the back, BFG 285/70/17 Mud Terrain T/A KM2 Tires, Mineral Grey Clearcoat Quad Cab Short Bed

LittleOleHotShotter · 11-01-2009, 08:48 AM

My truck runs better with 210,000 miles on it then when it was brand new.

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Offroadjunkie · 11-05-2009, 03:19 AM

i read in a magazine once 10-20 for a gas motor and 30-40 for a diesel motor. Just make sure that you are pulling stuff with your truck from time to time... from what i have heard it makes the motor break in better which leads to a longer lasting motor

__________________
1998.5 Dodge Ram 3500 4x4 5speed only cold air intake, 50hp injectors, 3 piece manifold for now. Came with bags that are not hooked up

dougeendreno · 11-06-2009, 12:42 AM

i gave it the 3rd oil change at 12k then i used amsoil. around town and rural backroads jumped 50 miles a tank. same time as the weather broke springtime. now with 20k it's getting colder lets see if it continues.

WILDDUX · 11-06-2009, 04:23 AM

My truck started running a little smoother and getting better mileage right around 17 to 18k.....

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07.5, 6.7L, Quad Cab Laramie 4x4, 295/70R17 Toyo MTs.

7492 · 11-06-2009, 12:42 PM

Drive it like you stole right off the lot and never look back.

Every new Caterpillar machine I put together receives no such "break in" and we have no problems....and Cat doesn't even require such nonsence.

__________________

07 Megacab 2500 4x4 6.7Liter 68RFE 3.70 limited slip . Bone stock and no problems 20 MPG highway easy .. 21.75 best so far.1999 Durango 5.9 Liter 3.92's ALL the options.
Work truck 09 Freightliner M2 33k GVW ISC 260/840 RFO9210B

SouthernBoy · 11-06-2009, 01:21 PM

Ive built plenty of race engines, and the only break-in was for a solid lift cam. If we used a roller, you can race it right outta the box. Only important thing is to make sure everything is up to operating temp, but once she's warmed up, put your foot in it.

__________________
2009 SLT QC SRW 4x4 • 6-speed-auto • 3.73 gears • 285 BFG-AT tires • All Stock

clark4131 · 11-06-2009, 02:36 PM

You'll know it's broken in when you hear cheering and confetti comes out of your tailpipe, probably around 20K or so...SC

__________________
'08 2500HD 6.7L SXT/SLT MegaCab, Smarty 6.7ME, EDGE Insight, AirDog II, BMK-21, Bilstein 5100's, HBS Level Kit, Cooper Zeons on 20's, EGR MIA, Stealth DPF/NOx, Tank Vent Mod, Mag-Hytec Pans, Thuren Trackbar, DSS Steering Brace, RCX Dual Stabilizers

DAVECS2 · 11-07-2009, 04:06 AM

Quote:

Originally Posted by clark4131

You'll know it's broken in when you hear cheering and confetti comes out of your tailpipe, probably around 20K or so...SC

That is classic. I am keeping this quote if you do not mind:-)

One of the reasons I bought a diesel rig is I heard they like to be abused right form the start until they die 500K later. My truck almost has 3000 on it and it is already sounding different, and it has always been quick. SO I am either putting it in the grave early or there is some truth to driving it hard. I am doing AMSOIL and a bypass for my first oil change. Why wait for parts to wear.

__________________
2009 2500 Heavy Duty Quad Cab 4X4

Joshua Lee · 11-07-2009, 06:12 AM

If it's bone stock drive it like a sports car... It will keep the EGR/DPF clean.

__________________
'07 6.7L Cummins, 6 speed Manual, 5" TBE

***azpyroguy*** · 11-07-2009, 12:21 PM

My DPF and EGR fell off at around 12k miles... I now have about 35k on it, and started noticing better mileages and a slightly different sound around 25k or so...

Now I tow regularily with it as well..

Have not had a single problem other than a loose bolt on the EGR cooler which I thought was a failing turbo as it sounded awful.

__________________
Scott (AzPyroGuy)
2007 Dodge Ram 3500 QC DRW, 6.7 Cummins, AirAid Airbox, H&S 4" TBE-BlackMaxx-Complete EGR Delete, RBP Tailpipe, EBC Yellow/Green Stuff Rear Brakes, BM Engineering Wastegate, HID Lights, Panasonic Deck, Sirius, Rockford 3Sixty.2, Power Series Mids/Highs/Amps, ProBox Rocks Dual 10" subwoofers.

11-01-2009, 08:42 AM	#1 (permalink)
john2669 Cummins Nut Join Date: Aug 2008 Location: Maryland Posts: 377 Thanks: 0 Thanked 1 Time in 1 Post john2669's Truck Pics	Engine Breakin How Many Miles? Have a 07.5 with only 17K on her, I have noticed the the truck is starting to sound different (out the exhaust) and the engine is really starting to respond. My question is, how many miles does it usually take for these 6.7's to settle in? Thanks __________________ 07.5 2500 4x4 6.7L, EJ w/ Att., MP-8,S&B CAI, Quadzilla Boost Fooler,Aero T Muff , BAPD Turbo Down Pipe to Stage 1 H&S kit, EGR Delete, Banks Dual Monster Exhaust out the back, BFG 285/70/17 Mud Terrain T/A KM2 Tires, Mineral Grey Clearcoat Quad Cab Short Bed

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11-01-2009, 08:48 AM	#2 (permalink)
LittleOleHotShotter Diesel Head Join Date: May 2008 Location: Somewhere in the USA, but I live around CLEARWATER, FL Posts: 1,461 Thanks: 1 Thanked 9 Times in 6 Posts LittleOleHotShotter's Truck Pics	My truck runs better with 210,000 miles on it then when it was brand new. __________________ Need something shipped??? How about transport talk??? *Shipping Quotes & Auto Transport Forum<-----------Check it out***

11-05-2009, 03:19 AM	#3 (permalink)
Offroadjunkie Cummins Enthusiast Join Date: Jun 2009 Posts: 268 Thanks: 3 Thanked 2 Times in 2 Posts Offroadjunkie's Truck Pics	i read in a magazine once 10-20 for a gas motor and 30-40 for a diesel motor. Just make sure that you are pulling stuff with your truck from time to time... from what i have heard it makes the motor break in better which leads to a longer lasting motor __________________ 1998.5 Dodge Ram 3500 4x4 5speed only cold air intake, 50hp injectors, 3 piece manifold for now. Came with bags that are not hooked up

11-06-2009, 12:42 AM	#4 (permalink)
dougeendreno Cummins Fan Join Date: Aug 2008 Posts: 56 Thanks: 0 Thanked 0 Times in 0 Posts dougeendreno's Truck Pics	i gave it the 3rd oil change at 12k then i used amsoil. around town and rural backroads jumped 50 miles a tank. same time as the weather broke springtime. now with 20k it's getting colder lets see if it continues.

11-06-2009, 04:23 AM	#5 (permalink)
WILDDUX Cummins Fanatic Join Date: Oct 2007 Location: Elk Grove, CA Posts: 106 Thanks: 3 Thanked 1 Time in 1 Post WILDDUX's Truck Pics	My truck started running a little smoother and getting better mileage right around 17 to 18k..... __________________ 07.5, 6.7L, Quad Cab Laramie 4x4, 295/70R17 Toyo MTs.

11-06-2009, 12:42 PM	#6 (permalink)
7492 Diesel Freak Join Date: Apr 2007 Location: Monessen ,Pennsylvania Posts: 738 Thanks: 102 Thanked 14 Times in 12 Posts 7492's Truck Pics	Drive it like you stole right off the lot and never look back. Every new Caterpillar machine I put together receives no such "break in" and we have no problems....and Cat doesn't even require such nonsence. __________________ 07 Megacab 2500 4x4 6.7Liter 68RFE 3.70 limited slip . Bone stock and no problems 20 MPG highway easy .. 21.75 best so far.1999 Durango 5.9 Liter 3.92's ALL the options. Work truck 09 Freightliner M2 33k GVW ISC 260/840 RFO9210B

11-06-2009, 01:21 PM	#7 (permalink)
SouthernBoy Cummins Fanatic Join Date: Oct 2009 Location: Central Texas Posts: 113 Thanks: 0 Thanked 4 Times in 3 Posts SouthernBoy's Truck Pics	Ive built plenty of race engines, and the only break-in was for a solid lift cam. If we used a roller, you can race it right outta the box. Only important thing is to make sure everything is up to operating temp, but once she's warmed up, put your foot in it. __________________ 2009 SLT QC SRW 4x4 • 6-speed-auto • 3.73 gears • 285 BFG-AT tires • All Stock

11-06-2009, 02:36 PM	#8 (permalink)
clark4131 Cummins Nut Join Date: Sep 2008 Posts: 473 Thanks: 1 Thanked 9 Times in 9 Posts clark4131's Truck Pics	You'll know it's broken in when you hear cheering and confetti comes out of your tailpipe, probably around 20K or so...SC __________________ '08 2500HD 6.7L SXT/SLT MegaCab, Smarty 6.7ME, EDGE Insight, AirDog II, BMK-21, Bilstein 5100's, HBS Level Kit, Cooper Zeons on 20's, EGR MIA, Stealth DPF/NOx, Tank Vent Mod, Mag-Hytec Pans, Thuren Trackbar, DSS Steering Brace, RCX Dual Stabilizers

11-07-2009, 06:12 AM	#10 (permalink)
Joshua Lee Cummins Enthusiast Join Date: Aug 2008 Location: Haltom City, Texas Posts: 243 Thanks: 0 Thanked 4 Times in 2 Posts Joshua Lee's Truck Pics	If it's bone stock drive it like a sports car... It will keep the EGR/DPF clean. __________________ '07 6.7L Cummins, 6 speed Manual, 5" TBE

11-07-2009, 12:21 PM	#11 (permalink)
*azpyroguy* Failure is NOT an Option! Join Date: Jun 2008 Location: Surprise, AZ Posts: 419 Thanks: 10 Thanked 25 Times in 22 Posts azpyroguy's Truck Pics	My DPF and EGR fell off at around 12k miles... I now have about 35k on it, and started noticing better mileages and a slightly different sound around 25k or so... Now I tow regularily with it as well.. Have not had a single problem other than a loose bolt on the EGR cooler which I thought was a failing turbo as it sounded awful. __________________ Scott (AzPyroGuy) 2007 Dodge Ram 3500 QC DRW, 6.7 Cummins, AirAid Airbox, H&S 4" TBE-BlackMaxx-Complete EGR Delete, RBP Tailpipe, EBC Yellow/Green Stuff Rear Brakes, BM Engineering Wastegate, HID Lights, Panasonic Deck, Sirius, Rockford 3Sixty.2, Power Series Mids/Highs/Amps, ProBox Rocks Dual 10" subwoofers.