Welcome to the machine....Metabaron....
I also have 5K on my Tutoro Chain Oiler and never have to touch it but to top it off before a big ride if needed
http://www.greenknights36.com/gallery3/index.php/CTX-Mods-Found-on-the-Internet
http://www.greenknights36.com/gallery3/index.php/My-CTX-So-Far