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Old 05-24-2016, 09:20 AM   #1
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Oil change intervals

How much time/miles are you putting on your Cummins ISC 400 between oil and filter changes ?
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Old 05-24-2016, 09:26 AM   #2
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One year or 15K miles, whichever comes first!

Ours is an ISC-350
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Old 05-24-2016, 09:46 AM   #3
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Quote:
Originally Posted by RT 41 View Post
How much time/miles are you putting on your Cummins ISC 400 between oil and filter changes ?
The Cummins web site does not show an ISC 400...but an ISL 400. My previous coach was an ISL and listed change intervals as 20k or a year, which ever came first.
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Old 05-24-2016, 09:53 AM   #4
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I am doing my cummins about every 10k miles. If I go longer than that then I risk issues with fuel filters. I change all my filters at the same time with the exception of my air filter.
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Old 05-24-2016, 11:13 AM   #5
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I change the oil and filters on my ISL every year. Never come close to the 18K mile requirement as we are 3K to 5K mile per year users.
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Old 05-24-2016, 12:06 PM   #6
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Change all engine fluid filters annually. Do lab analysis on synthetic engine oil to determine condition for change. Annual mileage between 5-7k. Do same for aircraft, boat and coach. Which is same as airline practice.
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Old 05-24-2016, 12:38 PM   #7
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I would never go over 10000 miles or one year.
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Old 05-24-2016, 12:51 PM   #8
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Once a year. Never any longer than that.
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Old 05-24-2016, 12:56 PM   #9
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Here is one source for Cummins scheduled service.

While at it...here is a source for Allison Transmission service.

Fluid analysis has been proven to be a valid substitute for some fluid and filter changes.
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Old 05-24-2016, 09:17 PM   #10
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Just changed mine. Had it in the engine for 2 sears and 10k miles. Did have JG labs do a analisys and they said to run it for another 5k then check again. I changed it anyways.

Our local Freightliner service manager said the are running up to 50k in the trucks they service and have lease agreements on!
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Old 05-24-2016, 09:42 PM   #11
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Quote:
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The Cummins web site does not show an ISC 400...but an ISL 400. My previous coach was an ISL and listed change intervals as 20k or a year, which ever came first.
Yep, that's it! It's in the engine book.
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