I have three Brooks saddles and I will not ride anything else. One is new and the other two are over 25 years old. That being said you must prep the saddle, most use the Brooks Proofide.
This link will take you to their site.
http://www.brookssaddles.com/en/Shop...oofide+40g+Tin
I don't use it, No joke I use A&D ointment it's cheaper and works very well. Spread the stuff allover especially the underside. then let it sit somewhere warm for three or four days wipe off the top and ride. FYI A&D is mostly Lanolin and Mineral Oil. Reapply a little yearly.