Gearbox oil (91 Brumby)

Brumby91 · Post by **Brumby91** » Wed Dec 14, 2011 11:37 am

What's the best type/brand of gearbox oil to use for the standard 4 speed Brumby box?

I've noticed it's getting a bit thin.... ( it's probably never been changed)

Post by **TOONGA** » Wed Dec 14, 2011 11:49 am

there are many brands and it depends on how much you want to spend.

I have fuchs mp80 titan gear oil in my brumby box (admittedly it is a 5 speed liberty single range) and it works well.

Jetcar has repco brand gear oil in it for now, when I have time I will change it to the same oil as my brumby.

TOONGA

Brumby91 · Post by **Brumby91** » Wed Dec 14, 2011 12:09 pm

TOONGA wrote:there are many brands and it depends on how much you want to spend.

I have fuchs mp80 titan gear oil in my brumby box (admittedly it is a 5 speed liberty single range) and it works well.

Jetcar has repco brand gear oil in it for now, when I have time I will change it to the same oil as my brumby.

TOONGA

What is the Fuchs worth, if you don't mind me asking? And how much do I need?

Post by **TOONGA** » Wed Dec 14, 2011 1:01 pm

Sorry I've got no idea I was given 8 litres by a mate of mine when he moved house.

I did a search and the only price I could find was in English pounds £28.78 for 4 litres. which according to the currency chocolate wheel is $44.50 AU.

According to the gregorys manual you need 3.3 litres, I normally put in 3.5 litres.

TOONGA

Post by **Alex** » Wed Dec 14, 2011 1:27 pm

i like penrite oils and use nothing else.

alex

Brumby91 · Post by **Brumby91** » Wed Dec 14, 2011 1:50 pm

TOONGA wrote:Sorry I've got no idea I was given 8 litres by a mate of mine when he moved house.

I did a search and the only price I could find was in English pounds £28.78 for 4 litres. which according to the currency chocolate wheel is $44.50 AU.

According to the gregorys manual you need 3.3 litres, I normally put in 3.5 litres.

TOONGA

Thanks for the info Champ, appreciate it

YouTube · Post by **El_Freddo** » Wed Dec 14, 2011 3:48 pm

I've been using an LSD gear oil in my gearbox as it's better in hotter conditions - if you're planning to be doing some tough 4wd'n that will heat the gearbox it could be a good idea.

I found mine shifted better after the gear change.

Cheers

Bennie

Brumby91 · Post by **Brumby91** » Wed Dec 14, 2011 6:23 pm

El_Freddo wrote:I've been using an LSD gear oil in my gearbox as it's better in hotter conditions - if you're planning to be doing some tough 4wd'n that will heat the gearbox it could be a good idea.

I found mine shifted better after the gear change.

Cheers

Bennie

Ooh ooh! Do tell ? What is it? Brand etc etc that's what I need ha ha!

alang · Post by **alang** » Wed Dec 14, 2011 7:00 pm

Nulon smooth shift 75w - 90 for gearbox and differential combo's 4lts $44.95 at supercheap

run it in the liteace 8 seater along with Nulon street and track 15w - 50 5lt $56.95

have a look at the Nulon oils

YouTube · Post by **El_Freddo** » Wed Dec 14, 2011 10:33 pm

Brumby91 wrote:Ooh ooh! Do tell ? What is it? Brand etc etc that's what I need ha ha!

Not sure! It's been so long since I've changed it.

If I can find the bottle I'll let you know what it is

Cheers

Bennie

Backyard_Brumby · Post by **Backyard_Brumby** » Thu Dec 15, 2011 9:31 am

+1 to the nulon oil, have run it in my beamers that got a very hard treatment as well as the brumby before the rebuild. Their transmission oils are great (particularly the full synthetic lsd oils). I would recommend adding their gearbox additive at the same time. From memory it is nulon g something (in a white tube). It has P.T.F.E in it ..which I am pretty sure is basically a teflon coating. Found especially in my rough 4 speed it made a big difference.

As far as nulons engine oils, they are quite well priced but I tend to be a penrite man through and through

my 2 cents

Backyard_Brumby · Post by **Backyard_Brumby** » Thu Dec 15, 2011 9:36 am

Oh and this not changing the gearbox oil seems to be common amongst old subi owners...When I picked up the brumby we drove it from glen innes up to Brisbane. Upon arrival starting checking over it (because it drove horribly) and one of the many things we found was the fact that when we checked the gearbox for oil it was hard to even get a drop on the dipstick but there was plenty of dust and gunk. I don't know many gearboxes out of any car that would even last 10ks in the condition this was in.

Just crazy

rubisubi · Post by **rubisubi** » Thu Dec 15, 2011 10:04 am

Penrite

YouTube · Post by **El_Freddo** » Thu Dec 15, 2011 10:14 am

I've had a mate that "did his own oil change" from the advice of another mate. Well he went too far back and drained the gearbox then topped up the engine oil not thinking of the little amount that went into the engine...

~350km the L series stopped. Seized gearbox! And an expensive repair

Cheers

Bennie