2006 VOLKSWAGEN PHAETON Engine And Engine Cooling Problems

VEHICLE IS AT 80,000 MILES. THERE IS A COOLANT HOSE WITHIN THE VEHICLE THAT CONNECTS THE OIL FILTER RESERVOIR TO THE ENGINE BLOCK. THE HOSE IS MADE OF PLASTIC AND CRACKS IF ANY OF THE MANY FACTORS ARE MET (RAPID CHANGE IN TEMPERATURE, HIGH COOLANT TEMPERATURE, OVER 75,000 MILES). AS A CONSEQUENCE, THE PLASTIC CRACKS AND COOLANT RAPIDLY SEEPS OUT OVER TIME. AFTER READING OVER MANY FORUMS, THIS ENGINE, THE VOLKSWAGEN/ AUDI 4.2L V8 HAS HAD THIS PROBLEM FOR DECADES. AND MANY COMPLAINTS HAVE BEEN SPOKEN OF THE PART FAILING AROUND 75,000 MILES (NOT LONG AFTER THE WARRANTY EXPIRES). IN ADDITION, THE REPAIR TO FIX THE $6 PLASTIC HOSE REQUIRES A FULL ENGINE DROP FROM THE VEHICLE RESULTING IN A VERY COSTLY (I WAS QUOTED $2600) REPAIR. I WAS SPEAKING WITH AN AUDI PARTS DEPARTMENT, AND THEY STATE THIS REGULARLY OCCURS. THUS I FIRMLY BELIEVE THIS IS A DESIGN PROBLEM...