i've addressed most of the oil leaks on my 03 disco, and the rear main is the last one that was on my list, my local dealer recommended its replacement ,but the cost of doing it was more than i wanted to spend. is this worth getting involved with if the leak is not to serious. i have a friend who is a tech at a infiniti car dealership who will tackle the job for a lot less cash but i dont want to get him involved in a personal viet nam if the job is really tough