Synthetic gear oils

[james accordino]

--- Ari_Palomäki <ari.palomaki at quantec.inet.fi> wrote:
>     Jim,
> 
>     I've been using synthetic oils for many years as
> the
>     temperature over here can get pretty low and
> want
>     to be able to move the shifter. Have had no
> problems
>     whatsoever, no leaks(not even sweat), trans and
>     diffs work OK. Mind you, I do change the oils
>     frequently(at appx. 26,000 miles) and the old
> oils come
>     clean out.
>     Been using Valvoline 75W-90 and Mobil SHC.

Just checked the Castrol website, and they only have
Hypoy gear oil.  Dino and 80w-90 for GL-4 specs.  Both
their Syntec and Hypoy C are NOT for syncronized
gearboxs and are GL-5.  It looks like I'll try the
Mobil SHC50.  

Jim Accordino