I think that what it is anyway. Yesterday we were washing the outside of the 5th wheel when I noticed a dirty patch at the top/rear area of the roof. I got the out the ladder and tried to scrub it with a sponge but no luck. It was hard as a rock. Any idea on what could be used to remove this?
2018 Ram 3500 Laramie Longhorn 4X4 Dually Cummins Aisin CC LB / B&W Companion hitch
50 Gallon Transfer Flow in bed tank w/ Trax 3
2018 Montana 3121RL
As long as its not petroleum based (Which could eat the EPDM roofing) it will be fine. Just leave it alone.
2014 GMC 3500 Dually diesel 4x4 CCLB. Curt q24.
2011 Montana 3455 SA. 6 point level up. Disc brakes.
Progressive EMS. Valterra tank valves. Sailun G637 tires. ARP fridge control. All led lighting. Mor Ryde IS to be installed 6/2020