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ISX 550HP Cummins #3583360 12/31/14 10:50 AM
Joined: Jul 2008
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n5ifi Offline OP
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Flatbed 80,000 lbs a load.
2500 hundred miles a week and 2 gallons of Rotela a week.
No oil leaks and not excessive blow by.
No signs of oil burning out the stack.
Oil Pressure good

Oil change.......
Because the old head driver begged me to went to Delo 400 and added a Gallon of Lucus oil syrup which I have never used before.

Now truck uses 2 quarts in 2500 miles which is most acceptable.
Truck has about 800,000 miles so I'm thinking valve guides maybe. Not going to go into it now. It runs to good to do that.
What does the board think?
I have heard complaints in the past about Rotella and high oil usage but I cannot find anything on the web about it anywhere. These complainers were not on a board of any kind.

Re: ISX 550HP Cummins [Re: n5ifi] #3583379 12/31/14 11:03 AM
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OneEyeJack Offline
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When an engine is worn out oil can't fix it.

Re: ISX 550HP Cummins [Re: n5ifi] #3583383 12/31/14 11:04 AM
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xxch4osxx Offline
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2 gallons a week at 2500 miles seems a bit much based on my experience. The ISX powered trucks at my work only use a couple gallons through an entire 30,000km OCI. We gross 136,000lbs each load. The owner buys Castrol Hyperion semi-syn 15w40 in bulk delivered to the shop.

Last edited by xxch4osxx; 12/31/14 11:10 AM.

2015 RAM SXT Crew Cab 5.7 with 6 speed tranny.

2008 Mazda 3 GS Sport Hatchback 5sp MT (Girlfriend's car)

Re: ISX 550HP Cummins [Re: n5ifi] #3583420 12/31/14 11:23 AM
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JTK Offline
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I'd rater add 4gal/week of Rotella than mess with a modern day DEF injected, check engine light special like the FreightShakers we have at work.

More power to ya n5!


2019 Nissan Pathfinder SV
2017 Ram 1500 4x4, 3.6L.
2015 Nissan Versa 1.6 S
Re: ISX 550HP Cummins [Re: JTK] #3583444 12/31/14 11:39 AM
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n5ifi Offline OP
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2007
No DEF

It's a distinct possibility that the 2 gallons of Rotella oil are not going into my tuck to begin with but I'm assuming for now that it is being used in my truck.

It's in a 387 Pete

Last edited by n5ifi; 12/31/14 11:39 AM.
Re: ISX 550HP Cummins [Re: n5ifi] #3583528 12/31/14 12:46 PM
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ktmrider Offline
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I work for a commercial truck leasing company and we use the Rotela-T exclusively. Most of our fleet is running Volvo D-13 / Mack MP8 but we have a fair amount of Cummins ISX 500hp/13-Speed & ISX 450hp/10-Speed powered Volvos. We have had zero issues with out of the norm oil consumption on any of the engines with the Rotela-T.

Only issues with the ISX have been false low oil pressure readings causing the engines to de-rate and shut down. This has been due to Donaldson oil filter issues. They clog and cave in on the ISX. We also have issues with the crankcase breather filters that seem to get dirty easy and wind up clogged on the pre-DEF ISX models. These are the 2008 through 2010 model engines that only have the DPF.


2011 KTM 500 E/XC Motul 300V 10w40.
2006 modded Chevy HHR (wifes car)Mobil 1 5w30.
2001 F150 44 (5.4/Auto) selling this week.
Re: ISX 550HP Cummins [Re: n5ifi] #3583589 12/31/14 01:26 PM
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Chris142 Offline
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Try it without the lucas


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
07 fjcruiser Car lube plus 10w30
Z400 castrol T 10w40
Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: ISX 550HP Cummins [Re: n5ifi] #3583599 12/31/14 01:32 PM
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Dufus2 Offline
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Could be a turbo problem burning the oil. ISX has issues with the variable geometry turbo, check the charge air pipe for excessive oil.


ASE Certified in Med/Heavy Truck Service including A9
Heavy Equipment Repair, Fleet Maintenance
Real Cars Rattle and Smoke a Little
Re: ISX 550HP Cummins [Re: n5ifi] #3583623 12/31/14 01:53 PM
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4wheeldog Offline
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Originally Posted By: n5ifi
2007
No DEF

It's a distinct possibility that the 2 gallons of Rotella oil are not going into my tuck to begin with but I'm assuming for now that it is being used in my truck.

It's in a 387 Pete


I take that to mean, someone else is doing the actual oil checking/topping, and 2 gallons a week were going.......Somewhere. It seems like maybe some shrinkage control may be in order.......More so than lucas motor syrup.

Re: ISX 550HP Cummins [Re: n5ifi] #3583792 12/31/14 04:06 PM
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ktmrider Offline
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So yes, I think 2 gallons week are going somewhere... Any drivers with a diesel pick up work there?

Last edited by ktmrider; 12/31/14 04:11 PM.

2011 KTM 500 E/XC Motul 300V 10w40.
2006 modded Chevy HHR (wifes car)Mobil 1 5w30.
2001 F150 44 (5.4/Auto) selling this week.
Re: ISX 550HP Cummins [Re: ktmrider] #3583841 12/31/14 04:45 PM
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n5ifi Offline OP
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I have checked the breather tube. It's open. There is a little bit of oil where tube goes into the motor but nothing major.

Re: ISX 550HP Cummins [Re: n5ifi] #3584250 12/31/14 09:54 PM
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TiredTrucker Offline
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2 gallons added between OCI's was a stretch for my Cummins ISX that had 968,000 on it when I sold it. Using Mystik JT-8 15w40. My previous Cummins N-14 used 1 gallon in 8000 miles at 1.4 million on the engine, using Kendall 15w40. My Detroit 60 12.7 I have now uses 1/2 gallon in 25,000 miles and it uses Schaeffer 7000 15w40.

As was stated, the VG turbo on the ISX can really slobber the oil. I replaced the VG turbo on my ISX at around 900,000 when it started slobbering too much. Need to check. It can lose oil out the exhaust or send it to the CAC. That latter is a very bad thing.


Freedom is not about having the choice to do what you want, but the choice to do what you ought.
Re: ISX 550HP Cummins [Re: n5ifi] #3584271 12/31/14 10:16 PM
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CT8 Offline
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The good old days a 318 Detroit 2 cycle would Use a gallon on a turn around from San Francisco to Los Angeles Calif approx 800 miles . The Cummins Would get 3,000 miles per gallon towards the end of the oil change.

Re: ISX 550HP Cummins [Re: CT8] #3584451 01/01/15 05:38 AM
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BBDartCA Offline
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Originally Posted By: CT8
The good old days a 318 Detroit 2 cycle would Use a gallon on a turn around from San Francisco to Los Angeles Calif approx 800 miles . The Cummins Would get 3,000 miles per gallon towards the end of the oil change.


smile


Former lube industry insider...now vehicle OEM engineering insider.
Re: ISX 550HP Cummins [Re: n5ifi] #3584487 01/01/15 06:51 AM
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CDX825 Offline
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Seems like most of the Ford diesel boards I'm on guys swear up and down that Rotella burns off faster than anything else.

That's not been the case though with my truck. I tried delo once though about 2 years ago and my oil consumption more than doubled.


1984 Ford F250 6.9 Diesel C6 2WD Rotella T 15W40 NTZ Bypass Filter

1992 Mazda B2600 4x4 Amsoil Series 3000 5W30

1998 Ford Ranger 4x4 Pennzoil Platinum 5W30

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