Yeah, I get it VP but as a long time Astar pilot, I know there have been a few different Oil Reservoirs over the life of the Astar so I find it strange that the res can't be modified. Heck, the original Lycoming used an opaque reservoir that would be perfect for this issue. That being said, I don't know enough about certifications to have a fair comment. And based on previous comments, you wouldn't know that I am probably the greatest Astar salesman in the world but since I spend a lot of time on the end of a longline, I find it a little disconcerting not really being able to tell what my oil level is or if there has been a sudden change in oil burn/consumption. Kinda sad that the operators have to be fixing the manufacturer's problems.