Diesel Engine Break In ?

[trbomax]

The trucks are different but a diesel engine is a diesel engine,pickup,boat.med-heavy duty truck,they are just bigger or smaller. The dodge cummins and the psd both started out life as med duty truck engines,and still are used in that app,but they are in pickups too.

Diff gears will pattern in a 100 miles unless they are set too tight to begin with.We are not talking about pulling the space shuttle around here.

[cjnebrig]

I never said the engines were different, the gears and drive trains are different between the semis and pickup trucks, the pickups need that break in period to seat the gears together, otherwise you can burn them up. And there are differences in the cumminings engines that are in the semis and the pickup trucks.

[trbomax]

You missed my point.Pistons and rings,cranks and bearings are all the same in principle and the way they are manufactured.

[EarlyRetirement]

Originally Posted by lesptr

My 2015 F350 diesel supplement said not to tow in the first 1000 miles.

Boy did I blow this one out of the water! I towed before 1000 miles and a couple other times on the factory fill even. The truck didn't explode or anything, as for effect on longevity, I'll have to wait to see what if any.

[lesptr]

Originally Posted by EarlyRetirement

Boy did I blow this one out of the water! I towed before 1000 miles and a couple other times on the factory fill even. The truck didn't explode or anything, as for effect on longevity, I'll have to wait to see what if any.

My memory served me wrong, it said not to tow during the first 500 miles. Someone else copied and pasted directly from the manual.

[aceinspp]

Originally Posted by lesptr

My memory served me wrong, it said not to tow during the first 500 miles. Someone else copied and pasted directly from the manual.

Basically this is what most manufactures recommend whether gas or diesel. Be govern accordingly. Later RJD

[dwaynerz]

I don't understand the long break in period. No otr driver can afford to drive around empty for 500 to 1000 miles to break one in. Granted, one is light duty v heavy duty, but the break in is the same. Vary your speeds and rpm until 500 or 1000 miles occurs. I say hook up and go. Seriously, you are dropping serious coin on a heavy duty light truck. You bought it to work, not go for milk and bread.

[bigdaddy1]

I did not tow my F350 for the first 1K and then hooked up and pulled my new camper to the Tennessee mountains. All I can say is "so far so good"!

[Tonkatoy77]

I am a diesel mechanic and I don't understand why they wouldn't want you to tow with them for 500 miles. If it's for the differential, I get that. But not the engine. When we rebuild engines we load the vehicle up and run the crap out of it for over an hour to seat the rings. I've seen other mechanics not do that and the engine seems to have a ton of blow by. Our school buses run the same 6.7 liter Cummins that the Ram trucks have. The full size transit buses weigh around 20k. When they leave the factory they are immediately going down the road to be delivered to the dealers. There is no light duty break in period. And we never have any issues with them.


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[nineback]

As has been stated several times in this thread the break-in is NOT for the motor but for the differential. My Ram manual explicitly states the diesel does not require a break-in period. The manual doesn't say I can't load the bed up with 5000 lbs it just says do not tow. I can only assume towing more stress on components than in-bed loads.

[stevewise]

My Ford F350 2014 manual said 1000 miles before towing.