EGR Cooler Leak Check X15

[marek4792]

With the hours it has, I think its time for inframe. Most likely a liner has sunk or an injector cup is leaking bad enough to push coolant out through the overflow. To be sure drop the oil pan and pressurize the system overnight and then bar the engine over to check if coolant is escaping between the piston and liner and/or liner and block.. Air compressor can also push coolant out too so make sure to rule that out too.