I have a mechanical Pressure oil gauge but just about to fit a new dash with a clock ( I always seen to be in a hurry and have little time + I feel lost with out one ) Also fitting an electric oil temp gauge . But I feel the pressure is more accurate mechanical ( just my thoughts ) and electrics can go wrong , hence my petrol tank cleaned the spade connector and gained 2 gallon . Think I will go and clean it again to see if I can get a full tank.
ps try Holdens web site the owner used to have several mogs