What oil for GKN diff in my Griffith

Hi chaps,

Spotted a little leak from the diff seal while I've been grovelling around under it. Nothing to worry about for this year but I don't know how much oil I've lost so I might as well drop the lot out and refill while I've got easy access with the body lifted.
Can anyone recommend an oil for the GKN diff and how much I should get?
Its got a drain on the bottom and a refill plug on the offside if thats any use.

Ta
Ian

Thanks LG, I'll look that stuff up.

Alright mate . . . This is what I've been using for the last 3-4yrs. Excellent stuff.

Millers CRX LS 80/140 BM

Make sure your diff is draining now, tilt it up and let it drain over a couple of days to get everything out of it. Run a magnet round in it to make sure you've not got any bigger bits floating about and then fill with the above.

Apologies if that's the case but I definitely asked him what he'd put in my diff.

He and I obviously had wires crossed - I had both gearbox and diff replaced so that's probably where any confusion came about. Anyhoo, he's dropping my Griff back tomorrow so I'll ask again.

Richard's just dropped off my Griff - v happy I am too.

He confirmed there was no misunderstanding - HD90 is correct. It's what is recommended in my manual:



... and it feels just fine.

Maybe the others are thinking BTR Salisbury diff?