Now that the federal government controls our fishing season and made it dismal and short at best here in Fl, I scarcely put 50 hrs on my V8 duals since 2012. Yet, I have noticed that the gear lube is extremely dark blue with higher viscosty in the lower units vs upper resoviors. End of last summer, I pulled one lower drive to replace pick up pump. I had to pinch line from resoviore to prohibit lube from draining and being wasted. I drained lower into coffee can for inspection and saving. Lube was not milky at all but apeared thicker as it came out of lower unit. The weather was HOT like in July! Other unit's lub was the same appearence. Neither appeared milky but very very dark blue. Any concerns???????