OldBaldy
Thread starter
I need to do some more reading. I thought that as long as TBN is greater than 1 there is sufficient additive left in the oil to help counter the TAN growth, and that TAN should be limited to 3-4. Your oil is right at this limit.
But if TBN needs to remain at least at the TAN level, then I understand your concern.
Blackstone always says the TBN must be >1, which is where my confusion comes from.
What makes it more confusing is that your wear metals don't (yet) indicate a problem, so perhaps the TBN really simply needs to be > 1 after all?
But if TBN needs to remain at least at the TAN level, then I understand your concern.
Blackstone always says the TBN must be >1, which is where my confusion comes from.
What makes it more confusing is that your wear metals don't (yet) indicate a problem, so perhaps the TBN really simply needs to be > 1 after all?
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