help, identification rear group

[deQuincey]

hi

can you help me identifying my rear group diferential, see photo attached

I cleaned it and these numbers arise, do they permit identification of type, performance, maintenance grease needed ?, etc

regards

 

[TodB]

diff

Do not quote me, but I thought if you divided 38/11 (3.45) that indicated the ratio? I need someone to confirm this, however.

 

[Honolulu]

ratio

TodB is correct, divide to obtain ratio. The numbers show the numbers of teeth on the pinion and crownwheel respectively.

 

[deQuincey]

ok,

thanks for the information about the numbers

any advise on the apropriate viscosity of oil for this application ?
I ´ve heard about using:

80w

80w90

or 90w

but which is the correct one ?

and moreover have you heard about the EPaditive-based oils , can they be used ?

regards

 

[30csl]

Hi , a white painted S usually denotes a limited slip but this could have gone over the years. I am not sure on the oil for non LSD diffs but for LSD I use castrol B373.

If you have both wheels jacked up spin one and if the other goes the same way I think its a LSD,

Regards,

Rohan

 

[x_atlas0]

Hi , a white painted S usually denotes a limited slip but this could have gone over the years. I am not sure on the oil for non LSD diffs but for LSD I use castrol B373.

If you have both wheels jacked up spin one and if the other goes the same way I think its a LSD,

Regards,

Rohan

Typically, I have seen a "S" stamped close to the numbers, in addition to the white, painted "S" located on the top of the differential if it is a LSD.