I would replace the oil prematurely again using LM Leichtlauf; I use that when adjusted to Stage 2. Conduct an oil analysis via Blackstone Labs. Ceratec is a commendable product; I believe one can suffices. I would use that just per few oil changes, as instructed by LM. Additionally, you may have a mechanic inspect it.
Ensure that if you change the oil prematurely…
Examine the oil filter meticulously for metallic fragments or minor debris. Blackstone Labs is located in Fort Wayne, Indiana, USA. They conduct a comprehensive investigation of metal deposits and will provide notes for you. I already performed it on my supercharged E92 M3. I ultimately replaced the rod bearings with BE bearings that had improved clearance. Subsequent to it, there will be no more issues with wear. This problem mostly pertains to the S65 and S85 models, rather than the S63TU.
Blackstone will provide a free oil change test vial. Subsequently, you must pay their cost online, around $25, and submit it to them together with a sample of the oil extracted during your oil change.
If this is not the case, then just note it and consider consulting a technician. Nonetheless, disassembling the engine is costly and may lead to unnecessary labor and expenses.
Do not hesitate to inquire; I will assist to the best of my ability. Additionally, see the e92 M3 forums, m3post, for further information on Blackstone Labs. Here is a link to their website.
