Originally Posted By: volk06
They could have better base oils and they don't need that much more additive to have the same performance. Also It could take away from the ability to have extended oil performance over a long interval for wear/cleanliness. Alot of synthetics also use organic additives that wont show up on a UOA because they're not metallic. With lower quality base oils it take more moly in pyb to create the same low wear as PP with only 50-60ppm moly. Also that was a UOA on the PYB, it could be a little residual from the previous oil fill.
I agree with the points made here, your on to it more so than not, IMO.