Slide Maintence question

Ours has a gear mechanism and no cables or worm gear so we don't do anything except spray the track where the gears meet with silicone.If you ahve cables, go to Kano oil on the internet and order cable lube. It is sticky oil. The biggest maintenece item on a travel trailer is the batteries. Keep them filled with distilled water and fully charged. Don't let people tell you that a battery you can pry the lids off does'nt need distilled water either. I maintain aircraft and one requirement is to pull the battery, fill and charge for 24 hrs then test it. The batteries in my pickup last about 5 years.