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Old 10-19-2018, 06:10 PM   #1
Join Date: Sep 2018
Location: NY
Posts: 27
Question Has the c5500 durmax diesel served you well?


I'm considering a 2003 bus with a c5500 durmax diesel and allison transmission. I don't know a lot about this particular engine. How does it compare in durability to similar ones of that year? (7.3l DT466)

Thank you!
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Old 10-19-2018, 06:44 PM   #2
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Join Date: Apr 2012
Location: So Cal
Posts: 2,647
Year: 1935
Coachwork: Superior
Chassis: Chevy
Engine: 317 ci/tid / Isuzu
You can learn quite a bit about diesel engines by studying their "B" ratings. Here is a site that explains simply enough what they are.

B10 & B50 Life of Diesel Engines.
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Old 10-19-2018, 08:16 PM   #3
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The people over on Pirate4X4 forums say all duramax enginee need a set of injectors about every 90K miles.
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Old 10-19-2018, 09:01 PM   #4
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Location: Ashtabula, Ohio
Posts: 1,376
Year: 1996
Coachwork: Thomas
Chassis: International
Engine: T444E 7.3L
Not the most reliable engines, but way better than a Ford 6.0L diesel. The Duramax gets good fuel economy and plenty of power. Repairs on these engines kind of suck like raising the cab from the frame to replace injectors. Around here we get lots of electrical issues on these trucks because of the wiring and fuse boxes above the RF tire.
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Old 10-19-2018, 09:43 PM   #5
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Join Date: Sep 2014
Location: Eustis FLORIDA
Posts: 21,474
Year: 1999
Coachwork: Thomas
Chassis: Freighliner FS65
Engine: Cat 3126
Rated Cap: 15
My buddy has one. Not the greatest engine but miles better than a 6.0 ford/international!
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