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Oil leak.

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by BRD TRANSPORT, Mar 24, 2024.

  1. Mar 24, 2024 #1
    BRD TRANSPORT

    BRD TRANSPORT Light Load Member

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    Jul 6, 2018
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    Had no leaks on my C15 Acert 475. except a moist small bleed comming out or rear oil seal.no worries.
    Had an oil change and service guy asked if I wanted lucas oil treatment.
    I said sure being in a good mood . Being gone 2 weeks headed home.
    45 miles later I was leaking oil around my oil pan gasket
    W T H happend.
     
    BRD TRANSPORT, Mar 24, 2024
    BRD TRANSPORT, Mar 24, 2024
    #1
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  3. Mar 24, 2024 #2
    Big Road Skateboard

    Big Road Skateboard Road Train Member

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    You're certain it's not a problem with the filter?

    Absolutely nothing about the Lucas will cause issue with the gasket
     
    Last edited: Mar 25, 2024
    Big Road Skateboard, Mar 24, 2024
    Big Road Skateboard, Mar 24, 2024
    #2
  4. Mar 24, 2024 #3
    Diesel Dave

    Diesel Dave Last Few of the OUTLAWS

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    Hesperia, Ca.
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    Dump the Lucas, drop Wally World Gear oil instead. Half the price and your putting the strip additives back in your oil.
     
    Diesel Dave, Mar 24, 2024
    Diesel Dave, Mar 24, 2024
    #3
  5. Mar 24, 2024 #4
    BRD TRANSPORT

    BRD TRANSPORT Light Load Member

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    Jul 6, 2018
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    Will definitely check it out.
    Weather has made it tough to get under and check.
     
    BRD TRANSPORT, Mar 24, 2024
    BRD TRANSPORT, Mar 24, 2024
    #4
  7. Mar 24, 2024 #5
    W923

    W923 Road Train Member

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    Possibly oil from the rear seal is following the pan gasket
    Maybe some of the extra dipstick holes that are plugged are leaking and following the pan gasket (this seems to be pretty common). maybe the pan gasket is actually leaking
     
    W923, Mar 24, 2024
    W923, Mar 24, 2024
    #5
  8. Mar 25, 2024 #6
    Magoo1968

    Magoo1968 Road Train Member

    2,054
    5,475
    Mar 18, 2021
    St Malo mb
    0
    My experience with a c12 after adding Lucas was oil pouring out of blowby tube on a 50000 mile rebuild also was pushing out dipstick. Next oil change none was added and oil consumption stopped. Mechanic couldn’t explain it other than saying it somehow caused crankcase pressure to build up.
     
    Magoo1968, Mar 25, 2024
    Magoo1968, Mar 25, 2024
    #6
  9. Mar 25, 2024 #7
    uncleal13

    uncleal13 Road Train Member

    3,797
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    Apr 9, 2009
    Humboldt, Sk
    0
    Lucas is really thick. I put it in a Cummins N14, it puked it all out the same day. Topped back up with normal oil, normal consumption resumed.
     
    uncleal13, Mar 25, 2024
    uncleal13, Mar 25, 2024
    #7
    Magoo1968 Thanks this.
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