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2009 Sedan
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The report is odd. Usually they have a column like the bottom, where it says an acceptable range. The middle says unit/location averages?? Universal averages on the right column might be what you look at. That middle column is strange though. It's not an average of your 2 samples??
 

· Premium Member
2009 Sedan
Joined
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1,365 Posts
Zinc is from the oil's additive package. You WANT high zinc. Silicon comes from dirt. I know that one from big truck oil tests. If that is high, it's a sign of unfiltered air, or dirty air filters.
 
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