Recent content by Brody

Originally Posted By: Dyusik This oil has a good slug of Mg, it will do fine for much more than 3K miles. It is not rated as an API-Sx, due to phos content and is why it is stated not to be used in XXX conditions. Just like the CJ/CK with no API-SN/SM stuff that can and does work fine in...

Originally Posted By: Donald TBN depletion is not linear. However an oil with a VOA TBN of 10 will last longer than one with 8. I'm assuming non-linear because it's purpose is to counteract acid and the rate at which acid is produced varies? Originally Posted By: Quattro Pete Starting TBN of...

Hi all, my current understanding is that TBN is a measurement of the alkaline additives in an oil which in the case of a UOA seems to be one factor used to determine how much longer the oil can remain in service. In almost every VOA or UOA I've seen TBN is always mentioned in reference to the...

Most common use I know of is within the Porsche air cooled crowd. Another potential use could be in a performance built engine spec'd with looser rod and main bearing clearances, around .003" usually.