Some folk also use gasket sealant with them. Perhaps the surfaces weren't cleaned properly and some old gasket or dirt is causing the prob? Or maybe its just oil from the previous leak working its way off or a cv boot split and spreading grease about and not oil.
I haven't done it myself, but Autodata reckon it's 3 hours for the front seal and 4 for the rear. And that's for a competent mechanic, not that i'm doubting your skills, you may be a master for all i know
But i guess it'd be a fair old job anyway, but do able.
It is a PIA job, really. The front one means you have to take down the timing belt (and recommend to do it rather swiftly, as the oil could lubricate the belt and make it skip with catastrophic results).
The back one means taking down the gearbox and flywheel. It is probably the front one, if it was the rear youd probably have the clutch slipping already.
Ok so Milly defo is leaking from the crankshaft seal hubby started taking her apart this morning and has decided it's not a job for the driveway so it's gonna have to be done at the garage :'( so he's put it back together again
On the plus side focus is back on the road and back to being my main driver passed the mot with just a missing wheel but to note!
So I just need to find lots of £'s to have it done!