anyone got a good answer.....
here is the scenario, 2ltr air cooled engine, vdo oil sender unit, vdo guage...i start the car up , gauge shoots straight to around 40psi and hovers up and down as I'm driving in traffic. After around 20mins half hour of driving the gauge drops radically to zilch when i come to a stop and stay on idle. If I rev stationary it shoots back up to 30/40 then once off pedal it goes back to zero. My cylinder head temp doesn't alter at all.
I shut down, no oil leaks anywhere, oil level is good, oil looks clean on stick. Ohh and there is no oily smoke from exhaust , plenty of power through the gears. If i rest it for about 5 mins then restart and drive its back to normal until it repeats again
seriuously, WTF
relief valve
oil filter block
oil pump
pick up tube
this is my thoughts