don't waste money on walbernizer
the '99 and beyond trailers have a clear fluorocarbon PAINT
it is a CLEARCOAT not the older plasticoat...
you can NOT nourish it or replenish as suggested with the older plasti-coat approach.
wash, clean, clay or otherwise prep the skin surface...
i use a soft brush and 2 buckets but many like sheepskip mitts...
then apply your favorite AUTOMOTIVE wax or sealant.
if your unit is stored in the sun carnauba waxes evaporate in a few weeks so
i use meguiars polysealant #20 or synthetic sealant #21 and like the results with both...
#21 is available in big jugs and buffs easier
Meguiars #21 Synthetic Sealant
but i've used #20 for 15+years and it's very durable and easier to find.
Meguiar’s No. 20 Poly Sealant
if you already have a favorite, non abrasive auto wax uses it.
and JUST LIKE AUTOMOTIVE CARE
proper prepartion of the the clearcoat finish is essential for best results...
the window frames/trim and attached fixtures/handles don't have the automotive clearcoat so don't apply wax/sealant to them...
some of the trim is bare metal and some is crappycoated so i use a plastic/detailers spray on trim
and the meg's product for plastic/lexan on the clear rock guards.
the lower segment protectors are brushed stainless steel so DON'T wax them either.
use your favorite stainless steel product.
i'm using soap/water then a solvent (for tar) followed by dap stainless spray (a mineral oil basically)