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i believe the LL-01 and LL-04 are interchangeable. According to bimmerworld.com/BMW-Engine-Oil/
The LL-04 is preferable over LL-01 because of the higher level of zddp and lower level of saps.
My only complaint is that the Pennzoil is a 5w30 and not a 0w20. I can't justify paying double for Pentospeed LL-14 0w20.
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