ORIGINAL: wmtheflash

It's not, though. It's fake. Think of it like an on off switch. Oil pressure good or oil pressure bad. There is no reading in between. The oil pressure "gauge" is just for looks. I reality it's an idiot light engineered to look like a gauge.

You could be loosing oil pressure and not even know it. The stock sender is binary. The whole point of a gauge is to monitor what the car is currently doing. The stock gauge doesn't do that.

Think of it this way, how would like it if your temperature gauge (I understand that's not very accurate, either) worked that way? You wouldn't know your vehicle was overheating until it was too late to do anything about it. One minute you're at operating temperature and the next minute you're overheating.

Note that you're oil pressure reads the same, no matter what. We all know that when the car is cold oil pressure is going to be high. It drops off as the car warms up. It will also vary with vehicle RPM. Not so with the stock gauge. It "reads" one oil pressure all the time, because that's what it's designed to do.

Is a working oil pressure gauge too much to ask for in a performance vehicle? I don't think so.