I have a 2011 Fabia 1.6tdi - have just had a look to see what's needed to do an oil change, and found that my biggest 30mm socket isn't big enough to get the filter housing lid off.

 

I was wondering if anyone would know the correct size of socket, or a link to the appropriate tool.

 

I'm reluctant to use an adjustable socket / mole grips as that'll end in tears...

 

Ta

32mm hex IIRC. Don't use a double hex as they are more liable to slipping and as you say, don't use mole grips or an adjustable. You'll need the hex socket to torque it back up correctly.