my 944 85/5 has no engine noises etc but after highway driving and stopping at intersections the oil light flickers at around .5bar i have changed the pressure switch and also the oil pressure relief valve to the new design i'm running 15w50 redline synthetic. when cold she runs at 5bar solid and then when warmed a little idles around 3bar to 4bar but the presure flicks up and down in .5 bar increments.
Has anybody any ideas please..