Gearbox Oil Finally Changed - Castrol Syntrans

Andrew came around today and welded a nut onto the drain bung with his tig and was able to unscrew the bung. What a relief after taking so long to try and get it off he was able to do it easy.
We replaced the bungs and tightened them up nice and easy so as to avoid the previous issues although we suspect it was more to do with the silicone used more so then the tightening.

Here is the nut welded onto the drain plug bung

Decided to try Castrol Syntrans oil in the gearbox this time becasue it is cheaper then the Motul gear 300 by about $10per bottle and also readily avaible at places like REPCO and Supercheap Auto. I picked up these three bottles from REPCO when then had a recent 25% Off sale so saved even more.

Inital feel with the oil is very good with a lot less noise from the syncros and gear shifting from cold to hot very good with no cruching. I am actually quiet surprised and happy with how it has gone.

The new diff fluid and friction modifyer i talked about previously seems good and i drove around my suburb and did a fair few figure 8's and donunts for a while at about 20klm/h and under just to work the fluid into the friction plates. Diff noise is good with still some shutted but seems to be maybe not as good as with the penrite oil initially although hard to tell. Still a lot quieter then what i am used to and hopeing this oil hangs on a little longer then the Penrite but i suspect with the broader oil weight range it will.