9 91foxbod50 Member Sep 26, 2007 486 0 16 Sep 25, 2009 #1 Sep 25, 2009 #1 Any suggestions? Should I also use l,s additive? Posted via Mobile Device
87GT Drop Top Member May 1, 2009 500 3 17 South Florida Sep 25, 2009 #2 Sep 25, 2009 #2 Royal Purple 75W90. It has the additive in it already.
Shakerhood 20+ Year Stangneter Oct 28, 2004 3,356 208 114 Ohio Sep 26, 2009 #3 Sep 26, 2009 #3 The Owners Manual and the Service Manual call for 75W-90, but I believe Ford has issued a TSB that calls for 75W-140 for all 8.8s. That being said I still run 75W-90 with Friction Modifier.
The Owners Manual and the Service Manual call for 75W-90, but I believe Ford has issued a TSB that calls for 75W-140 for all 8.8s. That being said I still run 75W-90 with Friction Modifier.