I recently bought what I've always wanted: a VR-4. 1993, 93k miles, all stock(I was told) except for wheels tires and exhaust and megan Coilovers. Has had 128 miles put on it in the last year until I bought it. Before that it sat in a climate controlled warehouse and wasn't driven much at all either. Everything seems to run smooth except for two things. Oil pressure/knock and small vibration between 35-40mph. The oil pressure tends to fade at idle after engine is warm. Not to bottom, not enough to turn the light on either. And an extra 300rpms from the pedal will bring it back to normal. When oil pres. is low there will be a low knock in the bottom end on the pass. side. I just changed the oil to Castorol 5w-30 full syn with Lucas oil stabilizer mixed in as well with a K&N filter. Operating oil pressure seems to be a tad higher and the knock is barely audible at idle. Pressure still fades at warm idle. I haven't strained the old oil for metal but I didn't notice any while draining or moving the container around. Ran a good magnet through it and didn't pick anything up either. Is there anything I should be worried about or should check? I used to have a 92 sl but didn't get to do much to it so this is kinda my first real foray into the 3s platform. I've read about clogged oil pickups, worn bearings etc, but like I said the knock is almost inaudible so I don't think major damage is happening. But I want to keep this beautiful machine in top shape so I would appreciate serious mechanical advice. I have video of the pressure from cold start to warm idle, and also from inside the wheel well before and after oil change. Can't post them here but will try to link them if needed. And no bickering please too much of that going around on posts.