Hi guys, I have recently had my diff oils changed and asked them to put the correct oil in along with the correct friction modifier additive..
There seemed to be some confusion with the mechanics as they said the oil already has friction modifier in it?
I thought it was an additive done seperate to the oil? So just thinking maybe I could get the FM from somewhere and add it myself to the new oil... the reason all of this has been done is because of a groaning moaning sound when turning only coming from the rear that happens on start up and eventually goes away!! and I was told that without the correct FM this is a a symptom of that?
If this is a possibility to add this myself my question is which FM do I use?
But like the others guys say, a lot (or most?) of us use high-quality fully synthetic "LSD" (pre-mixed with FM.) stuff with no problem. I use Penrite Pro Gear.
But there are plenty of cheap "LSD" oils that would be inadequate.
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Friction modifier!!
2006 Jeep WH Grand Cherokee
Sargent Gutsy
SOLD 06 Limited G/C QuadraDrive II Lovells 2"Lift +30 rims 265/70/17 Imported Saguaro Bar Stedi
