Oil pressure fluctuating at idle

[wazzabie]

I pulled the oil filter and examined the internals. I don't see any metal debris. There is carbon like chunks in the pleats. It has about 30 miles of driving time with the engine oil. I also used an additive to the engine oil.

[kwmech]

Carbon like chunks doesn't sound good. Any pics of them. Also,.... unbolt the small aluminum adapter that the oil filter screws onto and see if the spring loaded check valve is not messed up or has one of those 'chunks' stuck in it