Ford Sierra Suretrac LSD push in shafts can anyone recommend a diff oil for this I am certainly no expert on LSD's but I am aware of a different oils for open and LSD diffs.
Thanks in advance.

AP (now Fuji Heavy Industries - eg Subaru) Suretrac LSDs use the standard diff oil (EP80/90 to GL5)

http://www.lezo.hu/szerkezettan/hajtas/eroatvitel/kerekhajtas/SURETRAC_differencial.pdf