How long, generally, is a break-in period?

RockinChair · Dec 4, 2022

Lockport said: ↑

If it was a CAT, one would say "drive it like you stole it" and that was a break in. But with a Cummin's Progressive Warranty they'll only pay for the first item that breaks. All the collateral damage downstream is on you (or the carrier). Always remember though, with a Cummins, you're actually getting 2 engines. No really.
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That sounds like a violation of the Magnuson Moss Act to me.

The_Kenworth_w990 · Dec 20, 2022

Dave1837 said: ↑

I was issued a new truck, a very nice one at that. So far I'm pleased with it, and I'm not trying to sound non-appriciative, but it does not run good at all. It's a W900 with an X15 565/1850 Cummins and an 18 speed, and won't get out of its own way on a hill. Everyone I talk to says it needs broke in, and once it gets past the break in period it will be an animal. Is this true? If so, how many miles does that generally take?
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It Was 50,000K On My 2019 With A 565 X15 Before It Built FULL Boost And Took Off.

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