Although Royal Purple has some friction modifier in it, the Ford rear ends needs a little bit more. This kit includes one bottle of friction modifier to provide smooth operation of clutch-type limited-slip differentials. The specially formulated additive eliminates rear end chatter for a quiet operation. Included in this kit is two bottles of 75w-140 weight gear oil and one bottle of friction modifier.- MADE IN USA! IT MATTERS, NOT TO SUPPORT THE CHICOMS!
Due to Hazmat regulations, lubricants/fluids cannot be shipped to APO/FPO addresses.
Thank you for considering this item!
SEMPER FI
Oorah!