My HWH owner's manual says to spray off the tope of the tank and cap with WD-40...wipe and spray again. This will loosen any dirt and other crud and will wipe off easily. A 2nd cote of WD-40 will then spray away any really small stuff left behind.
Ron
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Ron, Sandie and Lilly
2013 Tiffin Phaeton 42LH 400 ISL | 2011 GMC Terrain SLT-2
Roadmaster All Terrain | US Gear Unified Brake System | Pressure Pro
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