Cooland Leaking from OVERFLOW coolant pipe Help please. DD15

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by KHAN363, Mar 29, 2022.

  1. KHAN363

    KHAN363 Bobtail Member

    17
    13
    May 25, 2013
    0
    Past few days coolant is coming from the overfill hose that connects to the coolant reservoir.
    No leaks anywhere on the coolant reservoir. even replaced the caps. holds pressure.
    ONLY drips from the overflow went PIPE.. when driving or parked when truck is on

    Added half a gallon while cold and after 300 miles reservoir was half. Truck runs great no issues no overheating nothing. Doesnt make sense any help would be great.
    Did my reservoir go bad? it was replace 4 months ago by a aftermarket one. wanst oem.

    see pics rig is 18 cascadia 385k
     

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  3. Magoo1968

    Magoo1968 Road Train Member

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    Mar 18, 2021
    St Malo mb
    0
    Rad cap is weak or head gasket is pressurizing system.. I’d start with rad cap
     
    Rideandrepair Thanks this.
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