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  1. #1
    Join Date
    Oct 2017
    Location
    Kokomo, Indiana
    Posts
    8

    Default oil consumption

    Ok, going thru oil just a wee bit on my 94 C2500. Daily driver to work, I can go from the full mark on the stick to an 1/8th inch above the add mark in roughly 200 miles thru the work week. Engine has 149K on it, age of injectors/pump is unknown. NO drivablity issues, idles smooth, starts easily, runs on all 8, even after sitting for 10 hours in 20'F temps at work. yes she has blow by out all the normal spots, no leakage to the ground of oil or anything else. Just goes thru it. Using Shell Rotella T 15w40, which has what I have used in every diesel I have owned. Do I just put up with oil usage and start planning to replace the engine next spring/summer or am I missing something. I tried with the CDR vented to the ground vs hooked to normal spot with no real change in oil consumption. With my extension tube, I see the vapor, but there is no liquid oil in the tube or on the part of the frame where I have it mounted. A recent 400 mile trip at highway speeds took her from full to just below add. I get in the upper teens for MPG's. Truck is emaculate, was owed by a diesel mechanic before myself, body is 98% rust free, only a few small bubbles in the bottom of one door. My usual go to place for a rebuilt 6.2/6.5L is nolonger a viable choice from my recent research(Diesel Depot/Avant Salvage). Just want to look at all options before things get worse, I could trade it off right now if I needed to, just do not really want to. But I cannot also afford any long down time due to failure as its my way to work. Thanks for any ideas in advance
    Silly NT's....I have Asperger's!
    1994 Chevy C2500 6.5td
    SSDiesel Heatsync
    4L80e built
    150K miles and counting

  2. #2
    Join Date
    Sep 2003
    Location
    Feeniks, Aridzona
    Posts
    1,114

    Default

    Valve seals.
    1987 Jeep Grand Wagoneer...new 6.5 in process...diamond block, 18:1's, other goodies...


  3. #3
    Join Date
    Oct 2017
    Location
    Kokomo, Indiana
    Posts
    8

    Default

    Doesn't help that I cannot find a shop localy that is famillar with this older engine, being the home town of Chrysler's transmission plants, most everybody drives Dodgers or something with a Powerstroke in it. My old truck is an oddity in the local diesel scene.
    Silly NT's....I have Asperger's!
    1994 Chevy C2500 6.5td
    SSDiesel Heatsync
    4L80e built
    150K miles and counting

  4. #4
    Join Date
    Dec 2003
    Location
    Yukon Canada
    Posts
    1,620

    Default

    Next oil change try a different oil.
    KW dealer changed the oil in my Kenworth to a Rotella oil.It didn't like it,or should i say it loved it because my oil consumption doubled till it was changed out again.
    90 Chev 3500 c/c 4x4,6.2na,400 auto,4:10 gears.DSG Timing gears,main girdle, isspro tach, pyro,boost,oil and trany temp.Dual Tstats, High volume peninsular pump,on shelf, Custom turbo and intercooler 85%complete. Change of plans for the dually, it's going to get a Cummins. Both trucks are Blue 90 4x4 crews

  5. #5
    Join Date
    Jan 2001
    Location
    New Hampshire - Live Free or Die
    Posts
    6,058

    Default

    Quote Originally Posted by Yukon6.2 View Post
    Rotella oil...it loved it because my oil consumption doubled till it was changed out again.
    Changed out for what?
    The Constitution needs to be re-read, not re-written!

    If you can't handle Dr. Seuss, how will you handle real life?

    Current oil burners: MB GLK250 BlueTEC, John Deere X758
    New ride: MB GLS450 - most stately
    Gone but not forgotten: '87 F350 7.3, '93 C2500 6.5, '95 K2500 6.5, '06 K2500HD 6.6, '90 MB 350SDL, Kubota 7510

  6. #6
    Join Date
    Oct 2017
    Location
    Kokomo, Indiana
    Posts
    8

    Default

    Yes, whats in the KW now? Trying to not go to a much more expensive full synthitic oil.
    Silly NT's....I have Asperger's!
    1994 Chevy C2500 6.5td
    SSDiesel Heatsync
    4L80e built
    150K miles and counting

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