Rear main seal

[Kneale Brownson]

I originally planned to replace the rear main seal as part of the throwout
bearing/clutch replacement.  But looking at the Bentley, I'd have to get
some additional new parts, namely new flywheel bolts, new needle bearing,
as well as some more tools I don't have yet.  I see no sign of rear main
seal leakage.  This car has ~130K miles.  Is rear main seal replacement
necessary?