Bypass air, from the turbine, pushes the fluid to the gearbox lube line at the "Y" connector. The lube flow to the gearbox is reduced once the air gets to the feed line . Looks as if there's no lube going to the turbine and minimum lube reaching the gearbox. But, this is correct.

The turbine is lubricated from the fuel feed via internal plumbing. I assumed that this line was an inlet and when I replaced the stained line with this clear peice and was able to see the fuel backflow, I thought I had a start error. (less info)