Hi O8, I assure you it is not in the POH, I have looked in Limitations and in Systems, even searched through the Handling,Service,Maintenance section, and it is not in pre-flight ( normal ops section)- no mention of minimum oil requirements. I did look at the Lycoming Website, but no joy.........I'll simply ask our maintenance engineer, but it would have been brownie points to tell my examiner I sourced the info from an official source
Well I guess it is official if the engineer tells me!!
It may have been an oversight when they printed the POH for that model?