Gearbox oil change help needed!!

[HughS47]

Changing the gearbox oil today and couldn't get the filler bolt loose (thanks to everyone who suggested trying this first before draining). It is a square headed bolt on the gearbox of a mk1 eunos, 1.8 manual (1996), passenger side.

Took it to a man, he welded on a big nut, took a socket set to it, still stuck fast. We're in the situation that we can't undo the 'fill' bolt to replace the drained oil.

Question:

Is there any other way of putting oil into our gearbox if we use the drain plug to empty it?

[MG CHRIS]

You need a 6ft breaker bar and half inch socket and if that doesn't work stick another bar over the end of it for extra purchase.

[Rum Runner]

Try some heat on it, Is use a samll Creme Brulee gas torch for stiff bolts etc, plus wall drive socket

[Rum Runner]

Try some heat on it, Is use a samll Creme Brulee gas torch for stiff bolts etc, plus wall drive socket