One of the first things I put on this site (way back in 2014) was my page on basic horn maintenance and cleaning.
And in recommending it to a student, I realized that it was due for an update.
So I’ve just recently overhauled almost all the text and some of the pictures. I’ve added a load of different oil and grease recommendations as well as a few different techniques for both oiling the valves and greasing slides.
If you’ve never looked at it, or it’s been awhile since you’ve checked it out, give the new cleaning page a look and let me know what you think.