Join Date: Aug 2008
Location: HouseSprings/Ellsinore MO.
Re: friction modifier in differential?
only if you have a limited slip rear diff will you need a modifier.
Save the money on the Amsoil crap and you will be fine with the Valvoline
Amsoil or Mobile 1.
03 lariat cc,4x4 7.3,DP-F5,36''MT,8"lift w/trac.bars,4"Silverline ss.exh,AFE II,Optimas,ATS housing,WW,Turbomaster,6.0 IC & tranny cooler,BTS,ISSPRO gauges,HPX,ITP RR,BRV+,Powerslots,WARN prem-hubs,coolant filter,ccv mod,08 mirrors,ARP's,mod.fuel & inj's.,Crower rods,AIH delete,AMSOIL fluids. ~waitn on the 38R~