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I just noticed today while driving that the oil pressure gauge on my 04 CC, really moves from the center while idling to being pinned at 70 (to the right) when I am driving. I just called the service guy and he said this was normal.

Does everyone else experience this movement with their oil pressure gauge? 05 and 06 models as well? I found an old thread about this. I just want to make sure.

Thanks. CM
 

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It's not an Italian thing. It's an Oil Pressure thing.

When the revs go up, the oil pressure goes up. It means the dry sump system is pumping oil from an outboard oil tank (there's about 9-10 quarts) to and through all the moving parts of the motor. A scavenge system then gathers the oil and sends it back to the oil tank. It's a recirculating system.

There might even be an oil cooler in there somewhere that uses the airflow through the nose or under the car to cool it down a little bit while the oil is outside the motor.

It's good that you're actually looking at your oil pressure guage. If you ever notice that the pressure is dropping, PULL OVER IMMEDIATELY AND SHUT THE CAR OFF before your motor seizes up.
 

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Don't try to translate that to a Porsche - at least an older one. The only time the oil pressure gauge registers accurately is at idle, on level ground and with the engine warm.
 

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its only a problem if it drops while the revs are up. As CCPotenza says - pull over if it does.
Also, it is important to check the oil either while the engine is running or has only just been shut off. Otherwise it drains from the small holding tank and wont give you an accurate reading. You only need to do this in cars with a 'dry sump' system.
 

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No, it is a problem if it suddenly goes from 75 PSI to 100 PSI and you don't see it because the flipping gauge only reads to 70 PSI and normal oil pressure is above that. The range of the gauge should cover the normal range of operation. But hey, it's Italian.
 

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It baffles me why the Maserati engineers never resolved the issue ...this went on for several model years. its not an Italian thing, either. Its a MONEY thing. I own an "06 Coupe GT...just got the car and immediately discovered this problem. Needless to say, I have hardly driven it...I am less nervous so now that I see this is not just MY car..
 

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Oil pressure especially in a wet slump car will always fluctuate according to RPM,
As the the oil pump spins directly with the crankshaft thus raising and lowering the pressure accordingly.

Like mentioned above if you see a drop off in oil pressure whilst rpm is stable or climbing shut the engine off!
 
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