Came across this site purely by accident, had oil weeping out of my diff (freelander again)!! starting about 20 mins after having new tyres fitted to the front (yes i now know why). This is my first landrover and hadnt a clue this could happen, neither did the professional tyre store either by the looks of things. After reading posts think my problem has been solved thanks to the members on here, will be swapping front and rear tomorrow in daylight. Just to let you all know you are providing a great service, thanks people!!!!