I need some input. I read somewhere on here about the numbers off the oil analysis sheets. I seem to remember that the TBN or BN and the vicosity were the biggies. My last report had a TBN of 8.5 and vicosity of 14.4. What do these numbers tell me? I need to know more about this. DO I need to change it more often, less often? Are these numbers good, bad or indeferent? Thanks in advance, Layoutshooter
