elevated aluminum on 300 hr 912ULS

Alan,

First of all, what did the lab report say about it?  Blackstone Labs indicates the universal average for aluminum is 4 PPM with a 40 hour oil change interval. That can be extrapolated as 1 PPM for each 10 hours of operation, so 10 PPM at 100 hours would be the average.  So you are double that average and I would want to know why this changed.  

Did you cut and inspect the filter?
Are other wear metals high also or just aluminum?

last aluminum was 8.4

filter was normal

no other abnormalities except aluminum.

Alan