I have gen1 3sge and am having some oil pressure problems.Ive had them before but they were fixed by fixing a leak and cleaning the pressure sender.Ive done this again today and have done a full change using Morey's stabiliser and Penrite HPR 30 (20W-60) When im at idle my pressure drops and comes back again on acceleration but as soon as i have a constant speed it starts to drop again. Whats going on? It doesnt smell like the car is burning up and the temp stays the same, could my pressure sender unit be stuffed?If so, how can i tell and check etc?