Yep.

Have put a few psi on the coolant side of the cooler and air is coming out where oil should be.

I will swap over the unit from the other cab later this week and flush oil/water systems and see how it goes.

There are 2 plugged tappings in the top of the casting which mounts the cooler and filter. Does anyone know if these are a chance for taking lines to an external air/oil cooler? Or am I just an optimist at heart?

Regards,

SNAP