So the saga of the gearbox rear seal continues. When it had the rear crank seal done the garage also fitted a prop/tailshaft seal which promptly leaked just as badly as the one they took out.

When I had the horrible vibration issue it was coming from the prop not fitting into the gearbox. Thinking this might have damaged the bush inside the tailshaft and caused the leak I ordered a new one and another seal. Now if anyone tells you this is a DIY job DON'T believe a word of it. Getting the seal out is an easy one with a modified puller, getting down the side of the tailshaft past the bush is bloody impossible without the right tool. According to the haynes manual for the Ford Sierra its a ford dealer job...I now agree. As it was needed for work tomorrow the new seal went in without changing the bush, a right pain in the arse.