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I think I am using correct spec oil (BMW LL04) and thicker oil (5w40 instead of 5w30). OCI are about 3000-4000 miles which is less than 7500 mile OCI manufacturer recommendation. Never revved high before complete warm up. Will do a filter replacement in about 1000 miles too and see what comes...

While I wait for UOA, is there any other method of pinpointing if this is top or bottom end wear? If this is not normal then I am leaning towards cam bearings. Both jobs are pretty demanding for sake of just investigating. Is the N54 bearing material different between cam and rod bearings? Only...

I wrapped it in paper towels so the oil is soaked up. Most particles are between the folds, some are not. These are the particles. I cut open the oil filter of my other car and it had similar non magnetic silver pieces but less of them. Both cars are unlikely to be suffering rod bearing damage...

I thought rod bearings was a typical N55, S65 and S85 problem. This is something that I have read too. Large particles are not assessed and oil analysis shows engine is healthy when it is not. Probably still the original cam ledges. It threw a vanos code once about 5k miles ago but after...

After leaving the oil to stand for like 5 minutes, 1 and 2 disappeared but I thought maybe if they are particles they are settling to the bottom. On a second look I can see silver shiny particles sparsly embedded in the filter material but when I take these out and try to stick them on a magnet...

Need to wait a week for the oil analysis. Just thought I could maybe look for some opinions online. Engine is BMW N54 with about 78000 miles, bought used and this is the first time I have noticed this. Never cut the filter open before. Oil used is 5W40 bmw LL04. Obviously I can't be sure just by...

There was some oil left over in the oil filter housing so I soaked it up with a microfibre cloth and squeezed it back into the drain pan. I then saw bronze/gold particles (number 1) and when shook or blown onto they turned into what looked like a fine mist/dust of bronze/gold particles as shown...