On my Flagstaff, the Lippert manual that I downloaded from this website states that no maintenance is needed, (electric slide outs) and may actually cause more harm than good- as far as the gears and tracks go. The seals do need maintained however; and I have been using baby powder as well- works very good!
/SIGPIC]'08 V-lite Flagstaff 30WRLS
'06 Ram 1500 QC hemi
Reese dual cam sway control,
K&N series 77 intake, Hellwig helper spgs. LT tires,
Flowmaster "true duals", 380 h.p., Bilstein shocks