Originally Posted by microsnook
I guess this is where aftermarket gauges come into play
Wouldn't have made any difference. Oil pressure is not linear to the amount of oil left, and by the time you start noticing that pressure is dropping via a gauge, the oil pump is already sucking air and the CEL is going to be on. Measuring oil level of a running engine is actually a fairly tricky thing to do reliably, and even more so if you are trying to retrofit the system to an existing engine.