@TOLSON They state it's "Full Synthetic" in this VOA (link below) but then the Blackstone report says "Blend". I do know Mobil did label, at least, their 10w-30 as a Synthetic Blend at one time. TBN of 8.5 is the corrected result. Notice the add pack is lower than yours here.
Your Silicon is half of what is posted here. This could just be lab variance. but the consistancy on the rest of the add pack makes me think this is a change on the latest oil. May I ask what oil you ran before this run?
Delvac VOA
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