Personally I run a mix of honey, silly putty, bourbon and mustard. I have no gear whine and great traction. Only down fall is if your ridding behind me it smells like none other............... JK .........................I run Mobil 1 75w140 synthetic with friction modifer from Ford. Dont use any gear oil synthetic or non without the friction modifier. The FM is that nasty god aweful smelling blue **** in the 4 oz bottle. Dont get it on your hands, youll never get that stench out. Anyway AMSOIL and MOBIL make the best lubricants, use one of those and swing by the Ford dealer and grab a 4oz bottle of whale sperm.