hi could anybody give me a link to buy a drain plug for a astra gtc as one is missing 
or is it a visit to a vauxhall dealer.

My mate nearly rounded off the drain plug which is shaped like an allen key, fortunately he stopped before this happened. 

Which has resulted in me not getting my gearbox oil changed.

Anybody know the correct size I need to undo this or where I can purchase the correct size from?

Cheers

Hi I have noticed that most of the grommets are missing or badly blocked up is it best to leave them out or shall I replace them all as my drivers door tends to get a lot of water in it when it rains and were could i find out the part number for the grommets or a good place to get some from please many thanks for your help

Hi guys newbie here just wondering if anyone has fitted a tesla style head unit to an Astra j gtc and suffered any battery drain