[DanEC]

Usually lube from the idler shaft in the transmission doesn't make it's way into the bellhousing - it will run down the outside of the bellhousing to the low point on the transmission and/or bellhousing. If the rear of the engine and front of the flywheel looked dry then that pretty much just leaves the main input shaft seal on the T5. That would be a little unusual for most of the old 4 speeds but maybe not for a T5. I would think it might eventually contaminate the clutch too.