This may be the first UOA of Liqui Moly Top Tec 6600 0W-20, which is a BMW Longlife-17 FE+ oil.
The previous UOA was performed on the oil that was in the vehicle when I purchased it. It either has 1k or 6k miles on it, depending on when it was last changed. I posted that UOA here previously: https://bobistheoilguy.com/forums/t...-17-fe-maybe-6k-oci-maybe-2019-bmw-x3.347040/
I'm highly concerned about the sodium level and the possible coolant leak. The coolant level was slightly low recently which triggered the low coolant light. From what I read on the X3 forums, this happens to owners around the 30k mile mark and simply requires a coolant top-up. If it was true coolant in the oil, would the UOA not also show some water content as the coolant is a 50/50 mix?
Could it be possible that Liqui Moly uses sodium as part of its additive package which is causing the high sodium value? The "mechanical coolant pump" was replaced under warranty at 18.5k miles.
The oil had 7,540 miles on it and the TBN is 1.6. Given that BMW generally has a 10k mile OCI, the TBN seems quite low.
What does everyone recommend I do next?
The previous UOA was performed on the oil that was in the vehicle when I purchased it. It either has 1k or 6k miles on it, depending on when it was last changed. I posted that UOA here previously: https://bobistheoilguy.com/forums/t...-17-fe-maybe-6k-oci-maybe-2019-bmw-x3.347040/
I'm highly concerned about the sodium level and the possible coolant leak. The coolant level was slightly low recently which triggered the low coolant light. From what I read on the X3 forums, this happens to owners around the 30k mile mark and simply requires a coolant top-up. If it was true coolant in the oil, would the UOA not also show some water content as the coolant is a 50/50 mix?
Could it be possible that Liqui Moly uses sodium as part of its additive package which is causing the high sodium value? The "mechanical coolant pump" was replaced under warranty at 18.5k miles.
The oil had 7,540 miles on it and the TBN is 1.6. Given that BMW generally has a 10k mile OCI, the TBN seems quite low.
What does everyone recommend I do next?