Detroit series 60...'99

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by On The Square, May 28, 2020.

  1. On The Square

    On The Square Bobtail Member

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    May 28, 2020
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    Right out of the gate guys, I'm new to this forum.
    Any help would do. As an O/O for 20+ years, I've owned my share of 60s. Absolutely love em.
    But this '99 I just acquired has a Thermatic Oil Control Valve. Basically an Oil Thermostat in the housing of the Oil cooler. Never have I seen this, and neither has my ole time mechanic. And we've had MANY 12.7s, not to mention '99 models by the handful. Detroit said Some have it Some don't.
    I just now got the cooler put back together with all new stuff. But, under advice, I DID NOT put the (Thermostat) back in.
    No probs, so far. Should it operate any different than ones Without the thermostat?
     
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  3. magoo68

    magoo68 Road Train Member

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    st malo mb canada
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    No real difference except in winter oil temp may run a bit cool which can cause condensation .
     
  4. QUALITYTRUCK

    QUALITYTRUCK Road Train Member

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    romulus,mi
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    Yup. I never put them back in when servicing cooler.
     
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  5. Rideandrepair

    Rideandrepair Road Train Member

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    That’s a cold weather thing. Unless Im going Ice Road Trucking, I wouldn’t want it.
     
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