mustangjoe87 Member Jul 23, 2004 364 0 16 Harrison Twp., Michigan Jun 24, 2005 #21 Jun 24, 2005 #21 friction modifier lets the clutches slip. so the diff works correctly, i used valvoline 80w90 works great also i rebuilt my trac lok worth the 50 bucks at summit.
friction modifier lets the clutches slip. so the diff works correctly, i used valvoline 80w90 works great also i rebuilt my trac lok worth the 50 bucks at summit.
jwzg Member Apr 6, 2004 237 0 16 Prattville, AL Jun 25, 2005 #22 Jun 25, 2005 #22 Royal Purple is pretty good stuff as well. tain't cheap.
Mavrick Founding Member Aug 29, 2002 2,264 0 46 Collingwood, ON Jun 25, 2005 #23 Jun 25, 2005 #23 I'll be using RP 75w90.