The Metro 3 (SA227AC) has no procedure in the AFM for a low oil pressure.
The Metro 23 (SA227DC) does have a procedure in the AFM for a low oil pressure.
No model of Metro that I'm aware of has a procedure for low oil quantity.
grade-3
(helluva thread for what seems a fairly straight-forward question... )
Indeed.
Please upgrade yourself to Grade One!
It was a simple question, no need to get all bent & twisted about useless semantics.