i fix the leak in my 1998 sl500, by adding NO LEAK brand powering steering fluid to my resorvior and allowing about a week to work it way through the system . the leak stoped and it has not returned , that was about 15 months ago . i took out enough fliud fromm my resorvior located in the trunk and added all of the no leak. the NO LEAK brand fluids has a wed page which explains the product . i do not have any assocation with this company they have a great product which has saved me hundreds of dollars and headaches. all of you have saved me money through this forum and i hope i can do the same for you.