2015 Cascadia coolant filter change.

Discussion in 'Freightliner Forum' started by 9400i, May 8, 2020.

  1. 9400i

    9400i Bobtail Member

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    olathe,kansas
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    So I just bought this truck 6 months ago from a lease dealer and I don't get any maintenance records so I've been replacing filters here and there.
    Yesterday I changed the coolant filter and let her get up to operating temperature but was a few degrees higher than before Took her out for a run today and the same thing. Used to run 188 regularly, today her avg. is 197.
    The highest she got was 204,as the day started to warm up, and a 44,000 lb. load.
    Confused would be an understatement!!
    The fluid is nasty and needs to be changed but my first thought is sludge oozed off and fell into the filter compartment and is now clogging some small water line, or something.
    Any thoughts???
     
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  3. uncleal13

    uncleal13 Road Train Member

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    Around 2015 they said you no longer need that filter if you use an OAT type antifreeze.
    Detroit PowerCool Plus.
    It's probably original antifreeze and should be changed out by now.
     
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  4. RocketyMan

    RocketyMan Medium Load Member

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    You could also try cleaning your radiators exterior. They can get pretty dusty and dirty just from use OTR.

    I find that coil cleaner really helps clean things up. Also, taking shop air and reverse flowing air through the radiator really helps. Be careful not to bend the fins!
     
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  5. Rideandrepair

    Rideandrepair Road Train Member

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    Valves turned back on? Coolant topped good, no air pockets? May need to let it run a couple hours with cap off, or loose, to burp it.
     
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  6. jason6541

    jason6541 Road Train Member

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    Do a coolant flush, however I will say don’t be surprised if you end up doing a coolant pump soon. Sounds like cooling system was neglected. Newer DD series engines no longer have coolant filters.
     
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  7. Rideandrepair

    Rideandrepair Road Train Member

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    Maybe when you drained it, the thermostat got some crud in it, now it’s sticking. Definitely need to clean the fins in the radiator, take the ata cooler and a/c condenser off and clean them all good. Check fan operation, flush fill, replace hosrs, thermostats. Other than a plugged radiator core, which can be flushed with rust remover, but only if you’re a cheapskate like Me. Buys time.
     
  8. 9400i

    9400i Bobtail Member

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    I wondered if I should try to burp some of the air out of there if there had been some that had gotten in. So you have to run the engine with the radiator cap\ Reservoir cap off for about an hour or two? Because I did not try that.
     
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  9. 9400i

    9400i Bobtail Member

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    how expensive is that stuff?
     
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  10. 9400i

    9400i Bobtail Member

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    I unfortunately don't have valves that I can open and close.
     
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  11. Rideandrepair

    Rideandrepair Road Train Member

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    Sometimes, if you drained and refilled the system air gets trapped. It usually works out over time, and you need to top it off. Mine for instance recently took an extra 2 gallons, after an OH, it was totally dry, new radiator. Even though I ran it for an hour, after filling it, with cap off, vent open. Yours being a closed system, may need to run a while with cap off, I’m just guessing, it could be a little harder to get the air out than mine. Often there’s a petcock vent on the high point in the system. On the top radiator (steel part) of hose. If so open it also, while running engine. till coolant comes out of the vent,( high point), to get air out.Hope this helps.
     
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