Gearbox oil

[kyboy]

Hi there does anyone know what oil your supposed to use in the gearbox of a manual 850r? Read so many opinions,bit confused now I put some 75w90 synthetic in at work and the gear change is stiff as now!

[oblark]

I ran my m56 box on JCB ep90 gear oil, the M66 box has industrial ep90 gear oil and works a treat :)

[merc85]

Hi there does anyone know what oil your supposed to use in the gearbox of a manual 850r? Read so many opinions,bit confused now I put some 75w90 synthetic in at work and the gear change is stiff as now!

75w80 mineral i thought

[Ettienne]

Millers oil has a reg number look up, 75/80 semi I think they recommend

[Ettienne]

http://www.millersoils.co.uk/whichoil.asp

[merc85]

Just looked in the Handbook, 75w80 synthetic

[no1tosh]

ive just done mine on saturday with 75-90 semi and its fine, infact my gearbox feels better.

i looked on auto data and it did say 75-80, i just could'nt get hold of any and i had already dropped the oil:slap:

[MoleT-5R]

I think in my case any oil has to be better than none ...... lol

http://i1290.photobucket.com/albums/b526/MoleT5R/Moles%20T5%20R%20Project%20Olive/DSC_0088_zps3400e896.jpg (http://s1290.photobucket.com/user/MoleT5R/media/Moles%20T5%20R%20Project%20Olive/DSC_0088_zps3400e896.jpg.html)

30 miles of silent running ... till it ate it own layshaft bearing.... think I'll be remembering a drop of 75w80 next time :doh:

[kyboy]

ive just done mine on saturday with 75-90 semi and its fine, infact my gearbox feels better.

i looked on auto data and it did say 75-80, i just could'nt get hold of any and i had already dropped the oil:slap:
That's what I did oils free at work it's BMW 75w90 and frees the best price;) dropped the oil and it was a dark brownish and quite thick,the new synthetic as always looks v-thin and the drive home the gear selection felt really stiff! The next day and since it feels fine!!!???

[Wally Dog]

I think im going to use the genuine Volvo stuff - I've read everything from 75/80, 75/90, 5w30 engine oil, DexronII, Dexrin III, synthetic, semi synthetic and full mineral.

My brain now hurts so im going to leave the choice to the original designers of the gearboxes and spend that little more to put in the right stuff, so I don't have to think about it any more!!