Originally Posted By: 69GTX
I have a question to this...and I don't know the answer(s).
Does a satisfactory UOA as explained in the examples by Dnewton3 where wear metals are low ensure your engine is not producing and applying sludge to its internals? In other words can sludge be produced when TBN levels appear satisfactory? That begs another question....are the same satisfactory TBN levels identical for all cars/engines/uses?
I don't have all the answers,
but I have been gathering that it is the "insoluables" number that you need to watch
to prevent sludge buildup.
I have a question to this...and I don't know the answer(s).
Does a satisfactory UOA as explained in the examples by Dnewton3 where wear metals are low ensure your engine is not producing and applying sludge to its internals? In other words can sludge be produced when TBN levels appear satisfactory? That begs another question....are the same satisfactory TBN levels identical for all cars/engines/uses?
I don't have all the answers,
but I have been gathering that it is the "insoluables" number that you need to watch
to prevent sludge buildup.