So many Ques. so little time !!! 1st, to Jekyll-N-Hyde,What was the G.M. additive Part#,& what type & grade oil did you use for the rear Diff. ?I have a 2019 1LT,V-6 , ^ speed manual. Next,To "Wraith SS" ,What Royal Purple Lubriacant are you talking about ? Is it akso for the Rear Diff [ I know'Please save the smarty pants answers about not having a Front diff, tisk,tisk !!!]. I am new to this generation of Camaro's & honestly don't know if I have a limited slip Diff. I assume I do [ by virtue of having an controlloable "Traction control". Finally, to "redJewell2SS,is the Diff. fluid differant between a V-8 SS & my 1LT V-6 ,6 speed Std. ? Thanks to any & all who wish to respond to my Ques. I have owned loot's of good old U.S. street iron over the past 3 decades,but this is the one that really brings me back to my youth.I really want to treat it well,& most of all, want to start adding goodies to it [ something that Detroit hasn't sparked my interest in decades ].Admitadely,I need help from some fresh new minds. Thanks all. USMC52