Quote:
Originally Posted by SenorFunkyPants
But it is a trend that is becoming common...a change to 0W40 Mobil 1 is followed by a slight drop in lead and a slight increase in iron.
If the drop in lead is portrayed as a benefit then the increase in iron should draw equal concern. Can't have it both ways.
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Until people start running other thinner oils (PUE 5w40, etc), you can't blame it entirely on Mobil 1. I am considering the PUE on my upcoming change.
Some grades of Mobil 1 have shown trace amounts (1ppm) of iron on the VOAs I've looked at.