I changed the head gasket (belts,water pump, etc.),but this 2 year old problem still exists. I lose about a quart of oil per 6,000 miles, and it's showing up in the coolant overflow container. Engine oil and cylinder head are staying clean - no evidence of coolant into the oil.

Does anyone know if there is an engine accessory that could leak oil pressure into the cooling system? It runs perfectly, but the oil will deteriorate hoses & O-rings eventually if I can't find the problem...PLEASE!