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Old 05-24-2016, 08:20 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, 08:26 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, 08:46 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, 08:53 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, 10:13 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, 11:06 AM   #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, 11:38 AM   #7
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I would never go over 10000 miles or one year.
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Old 05-24-2016, 11:51 AM   #8
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Once a year. Never any longer than that.
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Old 05-24-2016, 11:56 AM   #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, 08:17 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, 08:42 PM   #11
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Quote:
Originally Posted by Cat320 View Post
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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