If I remember right the bulk of Panthers officially tested by the British postwar were actually assembled by REME in the immediate aftermath of Germany's occupation. The 'G' example on display there is certainly a survivor of this programme. (Hence there are high hopes it'll get a running restoration as it's all pretty complete, just somewhat neglected... This could mean
3 fully restored Panthers & the Gibb Jagdpanther residing in the UK!)
Interestingly the French gave their postwar Panthers a transmission life of 150 KMs, there were certainly reliability/maintenance issues to all models, not least the difficulty of changing major drivetrain assemblies when they failed. (There's a very good point by point asessment made by the French in Spielberger which contains the comment that Panther is; "in no way a strategic tank" based on these drivetrain weaknesses.) There's no mention of the fire thing in later/post war Panther testing reports that I have, though of course it was something of a 'feature' on the first models.
Might be worth checking the Pantherfibel to see if any warning was given to crews on routines relating to this:
Panther fibel.pdf (6.6meg pdf.)
Cheers,
Adam.