Not sure if you have a limited slip or stock or what. My GT6 has a welded rear - I run Red Line Differential oil. No temperature issues whatsoever. Sounds to me like there was some sort of problem that caused this. From: Jason Ostrowski <jason at multivintage.com> To: fot at autox.team.net Sent: Mon, Jul 19, 2010 9:33 am Subject: [Fot] FOT GT6 Goes Racing