Hi Sorry i call it a drive diff its on a standard XVS1100 2 wheels
will have to check the service book i only got the bike last year with FSH oil looks a bit pearlescent or matalic i checked the oil 4 months ago it was the same then hub not getting hot on travel checked that yesterday. Im just a bit stumped
as i said its never done it before and i use the bike alot i would say 1/4 of a thimble 2 or 3 ml but it was all over the diff so i could have lost more there was nothing the other day done 25 miles on it yesurday and there it was???? books dont tell me much about the diff