Originally Posted by GoneBoatN
Do you have a reference to where they changed that? All the documentation from Reliable that I've seen including the one you posted says to the top of the reliable logo which is about 1/3 to 3/4 full.
It's been a while, like 2 years since I read it but I'll look around. I found it when I was replacing my broken plastic caps with the metal caps. It might have been an MC tech bulletin(just look and it's not an MC TB). I think it had to do with condensation or water build up in them while half full.
I'm going on 2 years without issue with them full of 90wt.