3406e low oil temp

Discussion in 'Trucks [ Eighteen Wheelers ]' started by javelinjeff, Dec 31, 2015.

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  1. Dec 31, 2015 #1
    javelinjeff

    javelinjeff Medium Load Member

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    5EK series 3406e model cat runs too cool on the oil,,sending unit has been replace and guage tested,,both good,,will only get above 160 if pulling heavy on a long steep grade,,water temps never exceed 206F,,EGT's never exceed 950F,,oil is usually between 125-140F on gauge,,doesn't seem right,,checked wiring,seems ok,,grounded temp sensor,guage moves to 250F
     
    javelinjeff, Dec 31, 2015
    javelinjeff, Dec 31, 2015
    #1
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  3. Dec 31, 2015 #2
    Superhauler

    Superhauler TEACHER OF MEN

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    Sounds normal to me. Did you recently change water pump or oil cooler?
     
    Superhauler, Dec 31, 2015
    Superhauler, Dec 31, 2015
    #2
  4. Dec 31, 2015 #3
    javelinjeff

    javelinjeff Medium Load Member

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    been this way since i bought it in 2010,,engine inframed early 2013,,,water pump changed summer 2013,,so, no on any recent changes of parts
     
    javelinjeff, Dec 31, 2015
    javelinjeff, Dec 31, 2015
    #3
  5. Dec 31, 2015 #4
    Superhauler

    Superhauler TEACHER OF MEN

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    I dont know what temps are where your at. But cooler outside temps around 70 to 60deg. Your oil temp seams normal. For that engine.
     
    Superhauler, Dec 31, 2015
    Superhauler, Dec 31, 2015
    #4
  7. Dec 31, 2015 #5
    javelinjeff

    javelinjeff Medium Load Member

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    always thought oil should be within 10 degrees of water temps
     
    javelinjeff, Dec 31, 2015
    javelinjeff, Dec 31, 2015
    #5
  8. Dec 31, 2015 #6
    Superhauler

    Superhauler TEACHER OF MEN

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    On the newer cats (a-certs) yes on your engine not so much.
     
    Superhauler, Dec 31, 2015
    Superhauler, Dec 31, 2015
    #6
  9. Dec 31, 2015 #7
    swaan

    swaan Road Train Member

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    Is your engine braked saved?
    If so,then that's normal .
    Cats with a brakesaver have a huge oil cooler.
     
    swaan, Dec 31, 2015
    swaan, Dec 31, 2015
    #7
  10. Dec 31, 2015 #8
    AModelCat

    AModelCat Road Train Member

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    If your water temps and EGT's are normal, I wouldn't worry too much about it. Cooler oil (to a point) is actually beneficial for it. Oil oxidizes much more rapidly at higher operating temperatures.
     
    AModelCat, Dec 31, 2015
    AModelCat, Dec 31, 2015
    #8
  11. Dec 31, 2015 #9
    rank

    rank Road Train Member

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    Stupid question but maybe the sender isn't submerged in oil?
     
    rank, Dec 31, 2015
    rank, Dec 31, 2015
    #9
  12. Dec 31, 2015 #10
    javelinjeff

    javelinjeff Medium Load Member

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    maybe if i drained all the oil,,,,,,
     
    javelinjeff, Dec 31, 2015
    javelinjeff, Dec 31, 2015
    #10
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