Quote:
Originally Posted by Edddison
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!
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Are you certain this piece is from your vehicle and are they saying your whole valve was lodged in your filter? I'd be more concerned that "if" this device did fail was there any collateral damage as a result too.
To answer your question, see below, YES its important
The oil pressure relief valve is usually located at the pulley end of the engine, right around the oil pump. When the engine is cold, the oil becomes cold and thick. It is at this time that the oil pressure relief allows oil to flow directly to the bearings from the oil pump.
As the engine heats up, the oil becomes thinner and hot. Without the oil pressure relief valve, too much oil would flood the engine parts and spray onto the cylinder walls, resulting in excessive oil consumption and a reduction in overall engine power.