Don't fill oil up past 3/4 and it will never leak
If u fill it up, oil expands with heat and pushes out the cap or vent
I can go two long, hard rides on 3/4 to 1/4... No need to have it right full on a etech
I've noticed this as well recently on my 13 . Found the tank fill spout was "out of round". Same issue I had on my 08 so no it has not been resolved by BRP. The insert will address the issue. Most dealers or Mod shops should have them on the shelf.
What would the difference be between half and quarter ??? Even if it was 3/4 full and up side down the bottom would be empty in theoryI would be concerned about getting air bubbles in the system riding with less than half a tank no?
Mine leaks out of the breather in the oil cap. If you tighten that oil cap to tight it will, deforms the filler and leaks