I spray the seals with silicone lube every year, along with the weather stripping on my truck. Keeps them clean and prevents drying out or sticking.
As for the gears and toothed tracks for moving the slide in and out, I haven't touched it. But in my trailer, all moving parts including the motor are inside the trailer under the couch so nothing is really exposed to the underside like most big slides are.
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2013 F-150 EcoBoost MaxTow, Roush tuned (415hp 506tq), lifted on 33s, R.A.S.
2013 Jay Flight 28BHS Elite (Equalizer 10K hitch)
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