I have a 99 audi a4 with 126,000 miles i have had fpr almost three months. That bein said im wprried about the oilpressure gage it was at 150 the lowest it goes so did oilchange i was quart and a half low but after oilchange and puttin right amount the gage wont move anyone have or had the same problem if so what is it ? Pls and thank u

 

Maybe bad gauge? Are you loosing oil? Any CEL on? There Def would be a pressure light that would come on if the sensor detects it, also if you go thru the check screen there's even a readout just for oil pressure. I know the 1.8T engine I have the oil is pressurized by the vacuum system, which would be a failure for one or the other.