[wagonwheels]

Hi bob,yes you're right the oil has entered the DEM,sorry for the bad discription.Because the units been on and off so often I suspect one of the seals has been damaged.Strange thing I its been fine for months.Going to call the dealers tomorrow and order new seals.The Dem will then need to go off to Lukas again to get rebuilt (it still works fine) and reseal the unit.