Don't forget that different the condition of the piston rings is different between different engines. Same goes for the PCV system, fuels, driving habits and local environment. Ultimately this leads to statistically different reports.
Also, Blackstone Labs tells your ABSOLUTELY NOTHING about the condition of the engine or how well the oil protects it. It ONLY tells you how much service life there is left in the oil.
To stay on topic: I would imagine that with increased mixture of E85, one would want to pay more attention to oil changes. I do mine @ 5K miles regardless.
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