- Feb 16, 2007
- 45
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I need to change the rear end oil in my 96 Cobra. I had bought some off brand stuff, but decided I didn't wanna run that so I'm back to the drawing board. I think I'm gonna go ahead and get the royal purple. I've got three questions about it though. First, how many quarts do I need? Second, I know you're suppose to use friction modifier. Do I still need this with the royal purple oil (thought I read somewhere that it wasn't needed)? And finally, what weight should I use (located in Arkansas and it's my daily driver if that matters)? Thanks!