max2000jp
forum member
I had new FRPP "carbon" clutch packs installed when I had my 4.10 gears put in. I've got about 750 miles on them and I've been noticing a groaning noise when taking tight right turns. As when turning to the right at speed, there is a slight jutter than I can fell. The shop put in Royal Purple gear oil without friction modifier. Now I've searched and found people that say you need to run friction modifier with RP and people that say you don't. Does this sound like a part or install issue or should I just put some friction modifier in?