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Old 09-06-2011, 01:04 PM   #1
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Cummins Diesel Break In

I bit the bullet and bought a new 2011 Dodge 2500 Diesel truck. Has 30 miles, the dealer told me to drive @ least 500 miles before towing.

How did you break in your new diesel trucks. Do you use any fuel additives?

I can hardly wait to tow my Eagle 322FKS with this truck. Have towed with a 6 liter gas in the past, did Ok,.
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Old 09-06-2011, 03:56 PM   #2
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Congratulations on the new truck. The Cummins part dosen't need any breakin (that takes around 30K miles). The drive train probably needs a little wear in time.

Do not use any additives as they may clog the DPF filter on your exhaust. The DPF is a large $1500 muffler. Also don't let it idle for extended periods of time as that will soot up the DPF.
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Old 09-06-2011, 04:08 PM   #3
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I have a 2010 Dodge diesel Laramie 3500 and was told you do not have to have to break it in and I didn't. I use additives in my fuel and it gives me better mileage. If the filter does clog the engine will clear itself and show you on the front display.
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Old 09-06-2011, 04:29 PM   #4
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Usually the mfgr's recommendations on the break in before towing is so that the ring and pinion gears in the rear axle have a chance to wear into each other before applying a heavy towing load.
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Old 09-06-2011, 04:54 PM   #5
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Congrats on your Cummins! Yes you need to run an additive because the ultra low sulfur diesel does not have the same lubricating characteristics as the old diesel, and is hard on the injectors. also if you turn on your exhaust break everytime you start it and use it all the time this will help keep the DPF clear, the best thing to do is drive it!
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Old 09-06-2011, 11:06 PM   #6
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If you use an additive be sure to use the one that Cummins recommends.
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Old 09-06-2011, 11:39 PM   #7
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Check out this study.

http://www.motormayhem.net/wp-upload...-version-3.pdf


It should answer a lot of your questions.
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Old 09-07-2011, 06:56 AM   #8
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Thumbs up Thanks for the help

Thanks for the responses. This is my first Diesel truck. Great to have the input from all us Jayco owners, no matter what the subject!
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Old 09-07-2011, 10:12 AM   #9
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Take it on a solo highway trip of a few hundred miles .. Vary the speed never more than 10 min at one speed 60 mph then 70 then 55 ..you get the idea... its the best break in you can do
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Old 09-07-2011, 11:10 AM   #10
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----> wishes my F150 could grow up to be a Cummins Diesel <----

Congrats Buckeye!
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