The Mégane II Owners' Club

As I have a little bit of time I thought I would replace the air con switch & give it an oil change at the same time.

Firstly the air con switch was the wrong one ARRRRRGGGGGGHHHHHH.
Oil change. What bell end at Renault thought it would be a good idea to use those bloody awful not captive for long bolts for the side arms of the bottom tray? Both side just spinning like a merry go round ARRRRRRRGGGGGGGGHHHHHHHHHH.
Had to cut one side of the tray around the bolt & let it flop down but at least I could get to the sump plug only to discover I don't have a torx that size, bummer.
Does any one know what size torx the sump plug is?

Also the pressure switch for the air con looks like this one

https://www.buycarparts.co.uk/topran/13897383

does anyone know if it self seals when its removed?

Sorted the sump plug issue it was an 8mm square which I did have so at least that's sorted.

Still like to know about the A/C pressure switch though.