Originally Posted By: d00df00d
Originally Posted By: Petersubaru
just wondering why some of the 0w/20 oils have a much lower TBN(5.1)..does that mean the oil is not intended for long term useage or are these oils more designed for specific applications..one ex: http://www.eneos.us/product/1
TBN refers to additives that fight acids. Some oils are just less prone to acid formation, so they don't need as high a TBN. A lower number will do just as well. That's one possible reason.
Another possible reason is that the oil is intended to be used in markets where gasoline does not contain ethanol. This also translates to lower acid formation, hence less need for a high TBN.
A third possibility is that the oil is formulated to be friendly to the emissions systems of modern "clean" diesel cars. That entails minimizing certain additives, which can affect the TBN.
Noob question.
Chemically speaking, is TBN a buffer?
In a UOA, Does the TBN measure correlate to how contaminated the oil is?
Originally Posted By: Petersubaru
just wondering why some of the 0w/20 oils have a much lower TBN(5.1)..does that mean the oil is not intended for long term useage or are these oils more designed for specific applications..one ex: http://www.eneos.us/product/1
TBN refers to additives that fight acids. Some oils are just less prone to acid formation, so they don't need as high a TBN. A lower number will do just as well. That's one possible reason.
Another possible reason is that the oil is intended to be used in markets where gasoline does not contain ethanol. This also translates to lower acid formation, hence less need for a high TBN.
A third possibility is that the oil is formulated to be friendly to the emissions systems of modern "clean" diesel cars. That entails minimizing certain additives, which can affect the TBN.
Noob question.
Chemically speaking, is TBN a buffer?
In a UOA, Does the TBN measure correlate to how contaminated the oil is?
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