FRICTION MODIFIER FOR CLUTCH-TYPE LIMITED-SLIP DIFFERENTIALS
Specially formulated additive to provide smooth operation of clutch-type limited-slip differentials.
JDM Engineering recommends using one bottle of friction modifier mixed with Fords rear gear oil when installing new gears or a posi unit.
Detroit Truetrac posi units do not take Friction modifier so to be sure what is right for your car call a JDM technician.
