Hello dear Volvo community, I am now almost again despairing ………….. now my Dickelch ( Volvo S80/2.9 l ) was back in the workshop, oil change was due again, now after about 500 km the message No oil pressure immediately stops in BC and from 2500 u/min it starts to clap. I of course immediately turned off the engine and had the car dragged into a workshop, check the oil pressure switch was I.O. now the guess of the workshop master either it acts s I am very disappointed now and play with the thought of getting 5 l of fuel and finally burning off the scissor………. First of all I will drink a frustration beer ….. What is your opinion and experience ?? Who has had the problem ?? gruss a frustrated eifeler33