maybe many of you guys already know this, but I didn't, and I have a feeling that many others do not. I recently discovered while trying to open the blue cap on the washer fluid reservoir that the fill tube telescopes up so you can easily begin pouring from a full bottle without spillage. It's amazing some of the thought and detail that went into the X308.

 

I too discovered this several weeks into my X308 ownership in a similar way to yourself! Though much later in the first year of ownership I noticed this mentioned in the owner's manual! LOL
I just wished mine would tell me when the fluid is running low like it's supposed to, and that it didn't have a leak where the motors mount in the bottle!
I'll get round to sorting them at some point but getting to them is such a task!