Gear box oil.

[Pbirty]

Hello guys.
I'm looking for a bit of advice on changing my gearbox oil. I have looked into it a bit but getting varying answers on the best oil to put in there. It's a 1962 3.8 fhc with correct factory fit 4 speed moss box.
Thanks in advance Paul.

[rswaffie]

Redline MTL.
Used it in my Healey 3000 moss box and now in my 63 FHC. Once warm, really helps the gear changes and makes it a nicer box to use.

[Heuer]

[lopena]

I recently switched to Redline MTL in my ‘64 OTS Moss gearbox and noticed a marked improvement in shifting.

Be forewarned, however, that if your gearbox has any leaks they are likely to get worse with MTL.

Alan
N.J.

[Philk]

I recently switched to Redline MTL in my ‘64 OTS Moss gearbox and noticed a marked improvement in shifting.

Be forewarned, however, that if your gearbox has any leaks they are likely to get worse with MTL.

Alan
N.J.

I would reinforce this. For some strange reason, whilst Redline MTL has a higher viscosity (75/80) it is very, very thin when cold. As such, any seepage you would have from the seals with thicker gearbox oil will be exacerbated with MTL.

[Heuer]

It also takes a few hundred miles before you notice any benefits to shifting. Most people say the same but no one can come up with an explanation as to why