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07-22-2016, 06:34 AM
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#1
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Senior Member
Winnebago Owners Club Nor'easters Club
Join Date: Oct 2012
Location: South Jersey
Posts: 901
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Oil and Filter interval
ISB 6.7 340HP
Changed my oil and filter yesterday 6K miles and oil was black. Cummins recommends 15K. I usually change at 5 to 6K, was just wondering what others are doing ?
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Bob & Karen & Buddy "yourkie"
2008 Winnebago 39W Destination DP
2015 Jeep Grand Cherokee
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07-22-2016, 07:20 AM
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#2
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Senior Member
Monaco Owners Club
Join Date: Jun 2014
Posts: 14,608
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When I change my oil it is also black. As soon as I change the oil and as I check the level while traveling you can see that it almost immediately turns black, this is the nature of the beast with diesel engines.
I change my oil annually unless I am in the middle of a trip and using the coach, I will run it a little longer and change when I get home. I try to change it in the fall before we put the rig up for the winter. In 2009 we put 15K miles on the rig because we took a trip to AK. Normally we will put 5-7K miles a year on.
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Jim J
2002 Monaco Windsor 38 PKD Cummins ISC 350 8.3L
2005 Jeep Grand Cherokee w/5.7 Hemi
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07-22-2016, 07:24 AM
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#3
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Senior Member
Freightliner Owners Club
Join Date: Apr 2004
Location: Show Low Az
Posts: 1,325
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Once a year or 15Kmi
Or sign up for Cummins QuickServe Website
https://quickserve.cummins.com
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Dale&Susan, 08 Alfa Gold, DaGirlsRv Blog
2015 F-150XLT_2000W Solar_800 AmpHr Lithium
Magnum_MSH 3012 & PT100
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07-22-2016, 07:56 AM
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#4
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Senior Member
Join Date: Aug 2002
Location: Where ever I park it
Posts: 1,345
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The reason it turns black right away is because there are a lot of places that the old oil collects that doesn't get drained out. It doesn't hurt anything, but makes the oil black soon after changing it.
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2005 Dodge Ram Four Door Dually Southern Comfort Conversion
2017 Forest River 365RK
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07-22-2016, 08:05 AM
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#5
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Senior Member
Winnebago Owners Club
Join Date: Feb 2008
Posts: 728
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Quote:
Originally Posted by scooterbob
ISB 6.7 340HP
Changed my oil and filter yesterday 6K miles and oil was black. Cummins recommends 15K. I usually change at 5 to 6K, was just wondering what others are doing ?
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I have changed oil in my 02 Journey approximately every 6,000 miles since new. On several occasions I let it go 10,000.
Just got back from a 6,800 trip and the oil just went below the add line. The coach has 202,000 miles.
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07-22-2016, 10:28 AM
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#6
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Registered User
Join Date: Feb 2008
Posts: 3,607
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My Cummins ISL recommends 20,000 mi between changes and I use that as to when to change oil. In addition, I have my oil analysis done by Blackstone at the same intervals and it supports the 20,000 mi change interval. We're at 60,000 miles on the Bus so the "annual" change and the 20k falls at about the same time. If you're concerned, get the oil analyzed. Color doesn't have a thing to do with the quality of the oil.
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07-23-2016, 05:59 AM
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#7
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Senior Member
Freightliner Owners Club
Join Date: Apr 2004
Location: Show Low Az
Posts: 1,325
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Pigman1, I called Cummins the other day and also look on Cummins QuickServe website. Both stated 1 year or 15 K miles not 20,000. You may want to verify this for yourself by calling
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Dale&Susan, 08 Alfa Gold, DaGirlsRv Blog
2015 F-150XLT_2000W Solar_800 AmpHr Lithium
Magnum_MSH 3012 & PT100
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07-23-2016, 11:43 AM
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#8
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Registered User
Join Date: Feb 2008
Posts: 3,607
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Quote:
Originally Posted by gatorcq
Pigman1, I called Cummins the other day and also look on Cummins QuickServe website. Both stated 1 year or 15 K miles not 20,000. You may want to verify this for yourself by calling
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It depends on the exact ISL model you have, what it's installed in and how it's used. I've checked both the books and with Cummins.
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07-23-2016, 12:25 PM
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#9
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Senior Member
Join Date: Nov 2008
Location: Cosby, Tn
Posts: 6,587
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Quote:
Originally Posted by gatorcq
Pigman1, I called Cummins the other day and also look on Cummins QuickServe website. Both stated 1 year or 15 K miles not 20,000. You may want to verify this for yourself by calling
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Pigman1 is right. Cummins calls out 20,000 miles for an ISL in motorhome service.
https://cumminsengines.com/showcase-...00#maintenance
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Steve Ownby
Full time since 2007
2003 Monaco Signature
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07-23-2016, 12:45 PM
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#10
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Registered User
Join Date: Mar 2010
Posts: 8,777
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Quote:
Originally Posted by scooterbob
ISB 6.7 340HP
Changed my oil and filter yesterday 6K miles and oil was black. Cummins recommends 15K. I usually change at 5 to 6K, was just wondering what others are doing ?
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scooterbob
Most of us follow the engine manufactures recommendations.
If you call Cummins Care at 1-800-343-7357 with your engine serial number they will give you the correct recommendations for your particular engine.
Mel
'96 Safari
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07-24-2016, 07:15 AM
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#11
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Senior Member
Join Date: Nov 2013
Location: Elko, Nv
Posts: 2,464
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The oil is black because it is carrying contaminants which it supposed to do. If the oil didnt do this you would get a sludge buildup inside the engine.
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07-24-2016, 09:31 AM
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#12
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Senior Member
Ford Super Duty Owner
Join Date: Dec 2009
Location: Mcdonough, Ga.
Posts: 5,932
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Have you ever followed a diesel truck? Did you see the black smoke when he floor boards it? Diesel fuel has more oil in it. It makes more black soot. It comes off the wall of the cylinders and collects in the oil. Oil will always be black when changed in a diesel.
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1998 Pace Arrow 35 ft. F53 Ford V10 2014 Honda CRV toad
32 years mechanic at Delta Air Lines 15 year motorhome service manager. 3 popups....2 travel trailers....5 motorhomes....loved them all.
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07-24-2016, 09:36 AM
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#13
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Member
Join Date: Feb 2016
Location: Pinky of Michigan
Posts: 50
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Black oil after change is normal for any around 2004.5 year cummins, more so with egr, and diesel emissions equipped rigs, not from contaminants, non oil flow, just nature of the beast, sorry for posting a link to another forum, but this one explains it well. I've have many cummins equipped trucks oil was for the most part clean looking between changed, but with the modern emissions wonderful stuff, oil is black almost right away, remember just because oil is black, certainly does not mean it's dirty/bad/needs to be changed, it's not 1980's or prior anymore, just about all oils now-a-days are fantastic!
6.7 Black Oil - Dodge Diesel - Diesel Truck Resource Forums
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1998 Monaco Dynasty 38ft
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07-24-2016, 02:30 PM
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#14
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Senior Member
Newmar Owners Club Spartan Chassis
Join Date: Sep 2014
Location: Las Vegas, NV
Posts: 499
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Quote:
Originally Posted by Steve Ownby
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My ISL also calls for 20,000-mile oil and filter intervals OR 12 months, whichever comes first. I average 15k a year so I do annual oil and filter changes... it'd probably take me and extra 4-6 months if I waited to tick over to 20k. I don't think that would hurt anything, but if we're going by the recommendations from Cummins that means annual oil and filter changes.
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