Quote:
Originally Posted by jkv357
It's not the oil wearing-out that's the problem, it's the depletion of the additives and the increasing level of contaminants that do the damage.
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Exactly.
And in a diesel, the contamination is going to add up - metals, biodiesel or soot never get out of the oil.
The TBN is going to wear down, and so will the engine.