Plug on top of G'Box!!

[Bart GTI-R]

Hi,

How come there is a plug at the back on top of G'Box (circled in pic)

I know the one at the front is to fill it up, so whats this one for??

Thanks

 

[geoff pine]

Maybe the top one's to fill it up and the other is to check the level :doh:

 

[Bart GTI-R]

Cheers Geoff, I thought that but then again I thought the one at the front can do both those jobs, thanks anyway