From Left to right. BMW LL17FE, BMW LL14LE, BMW factory oil
Both 2 last are the BMW dealer fills. I have 5K OCI in between the dealers services
Well, I am pretty sure it was BMW oil, as I have been told many times the dealer is using only BMW OEM oil and couple people who I know personally confirmed it.
TAN is insanely high. If this oil is so acidic after 5K miles, it is a mystery how it can last BMW recommend OCI -10-11K miles.
Might be mistake on BS part
Both 2 last are the BMW dealer fills. I have 5K OCI in between the dealers services
Well, I am pretty sure it was BMW oil, as I have been told many times the dealer is using only BMW OEM oil and couple people who I know personally confirmed it.
TAN is insanely high. If this oil is so acidic after 5K miles, it is a mystery how it can last BMW recommend OCI -10-11K miles.
Might be mistake on BS part
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