I e-mailed redline with two questions,



Redline;

Does the TBN reflect the amount of NaOH or KOH in the oil?

No it doesn't.
The TBN level in the Red Line motor oils is from CaCO3, Calcium Carbonate.


Is there any NaOH in motor oil? if so how does it get there. combustion or in fresh oil?

There isn't any NaOH in our oils.