Hi All...I am installing the Whiteline Watts Link on my 2011 Mustang GT...How many quarts of Royal Purple 75W-140 Gear Oil do I need to use...some sites sell a 2 quart kit w/ Friction Modifier while other sites note that you need 3 quarts for 8.8" Ford rear ends :

2 Quarts + friction modifier:
http://www.latemodelrestoration.com/...r-Gear-Oil-Kit

3 Quarts required:
http://www.americanmuscle.com/royalp...0-gearoil.html

Also, do you need the Friction Modifier since the RP Max already has Friction Modifer mixed in it?

 

2.7 Quarts IIRC, and no friction modifier.

 

Thanks, Trumpetlon!!!