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Which Oil
Recently had my local BMW dealer do an oil change and it appears that they used LL-14 FE+. Today I went to the same dealer to get a quart of oil to have on hand just in case. They sold me LL-17 FE+ and said they only carry the LL-17 FE+ so that is what they must have used. Could someone explain the difference and which would be preferred? Thanks in advance.
Steve
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