Hi All,
Just a quick question,, My Falcon AU SR Series III 2002 has diff code "IR23-4005-BA" 134BA
i am about to change the oil and put some 80-90 Penrite in it ...

But by the code on the Diff makes me wonder is it a BA diff requiring a different grade like 85W-140?
or is 80/90 ok?

thanks

its an au diff, the prifix 1r23 is au, the ba part of the number is used in alot of au part numbers,

but 80w90 is fine for std au diff

Thanks for the quick reply and info ,all good putting in the 80/90 now
cheers