The procedure I followed was:
fill with Castrol EP80/90
get on the F3 and drive for 100km varying between 95 and 100kmph constantly
drain diff and fill with good oil
got a 4.77 currently occupying a bit of carpet in my room, while ive been happy with the modification so far happy to unbolt them from my carpet and sell them if some1 wants em
^ and around how expensive is it to get installed by a mechanic? I dont think I have the expertise to install one... and with 4.77 what rpm are you when sitting on 100-110kms??
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