Cummins Engine Break-In Procedures

[HBarlow]

Cut and paste from Cummins Turbo Diesel News email

Fact or Fiction: Breaking in Your New Engine

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Fact or fiction? You should run your new Cummins 6. 7L Turbo Diesel at light loads to allow the engine to “break in. ”

That statement is fiction. The Cummins 6. 7L Turbo Diesel does not require a light-load run-in period. Operating at light loads actually extends the amount of time your Turbo Diesel requires to achieve its full level of efficiency. With current manufacturing quality, your new Cummins Turbo Diesel is ready for loaded operation right out of our manufacturing plant.

The mating parts in the engine should achieve final finish and fit during the first 6,000 miles with properly loaded operation. After the run-in period, you should achieve optimum power and fuel economy from your Turbo Diesel.

 

[mwilson]

Agreed.



Hook it to something heavy and drive it like you stole it... ... .....



You don't see new Class 6-8 trucks getting babied out of the gate, same reason.



They are hooked to a load and put to work at Max Registered Weight (or higher up here, see American Loggers) from day 1.



Mike.

 

[GoodmanS]

So what if you normally run empty? Will it break in ok or should i Get a trailer and fill it with rocks? I dont mind hauling stuff around, but dont really want to burn oil for no reason either...

 

[HBarlow]

"Operating at light loads actually extends the amount of time your Turbo Diesel requires to achieve its full level of efficiency. "

According to Cummins published words on the subject it will take your engine longer to achieve full break in efficiency.

 

[FParisi]

Yeah, when I got my new truck, I read the manual + told my wife - It says we need to take the trailer for a trip! She liked it!;-)