Hi all. After some advise again!! Just had an oild seal replaced on the rear of my sump. They had to drop the gearbox to do it. Anyway, I was driving home after picking it up when i heard a strange noise. Sounded like it was sucking air or something and also had a slight rattle. nearly got home when i lost all drive. may aswell have been in nuetral. had to push it a couple of hundred meters ( i was *#*#ed). Any ideas? It's obviously going back but don't want them pulling the old "that was nothing to do with us" ploy!

You should check the fluid level and also smell it and look for signs of burning. You might be lucky and find its just not been filled enough or lost some transmission fluid when it was off the car. You get the same symptoms when the box is stuffed but the oil smells bad and is dirty when it really dies. Usually you can get back drive for a few minutes.

oil hasn't leaked and is still clean. would having an air lock in there cause it?

or maybe a bloked filter???