Nissan X-Trail Engine Coolant In Oil

I Have Just Replaced A Cylinder Head Casket And It Ran Well When Started The First Time But Eventually Mixing Oil And Water Again In Hours.

Hi, I Have Got A Problem On My Vehicle The Water And Oil Did Mix. So I Did Head Gasket Pressure Test And Skim Head. Now The Van Is Mixing...

I Noticed Some Mixture Of Oil And Water In My Qr20 Engine,i Checked The Radiator If They Was Any Oil Mixed With Coolant,but My Coolant Had...