I should've added it did it on the flat as well - I moved to flat after cracking the cap and releasing some pressure. It had quite a bit of pressure beneath the cap. Also - tank was not 100% full
Recently purchased a 2013 XM, went for my first ride and could smell fuel. Was on a slight downhill leaning towards the left, and opened the gas cap (slightly pressurized) and fuel started pouring out of the top.
I remember a while ago reading about this issue but have not found a solid fix to...