Im looking for some advice! I just got my E53 4.8is back from a service appointment. When I arrived they handed me a piece from my oil pump that they found in the oil filter. It is the oil pressure relief valve. Now, they want nearly 5,000 CAD. to replace the oil pump. Im wondering how important this is, and if i can drive without it? To my understanding its not important until i need it! but i don't full understand its function either. Any one that does?


Thanks!