Been a long time since ive seen gauges on a dash but oil pressure at idle sets at 20 when pressing on pedal picks up to to 40 even while driving let off 20 smash it to the floor 40 is this normal or should i expect a problem latter has over 300k miles

 

Sounds pretty normal.

 

Thanks didnt know been 25 hears since i have driven anythjng with guages.