I am seeing TBN used, and I am wondering how to interpret these numbers. I realize that as more miles pile on, the number goes down.
But what does a low TBN mean? Does it mean the oil is still neutralizing acids just as well as it always had, but that it won't be able to do it for much longer? Or does a low TBN mean that the ability to neutralize acids has decreased?
But what does a low TBN mean? Does it mean the oil is still neutralizing acids just as well as it always had, but that it won't be able to do it for much longer? Or does a low TBN mean that the ability to neutralize acids has decreased?