As a business owner who sells propane I can tell you that any propane filling station that attempts to fill a DOT tank affixed to a motorhome, without first opening the brass bleeder vent should be reported. This is an extremely unsafe act and could cause great personal injury and property damage. I fill any tank 100lb and down. Normally motor homes do not have a OPD valve. The 80% tube(vent) serves as the OPD. I also use a certified flow meter by the gal. Portable tanks are by weight,(state certified). TW+WC=fill weight. No more no less.
Jerry and Carol
2014 38CK-Auto Levelers
2012 F350 Super Duty Crew, Air Bags, Pull-Rite Superglide, Splendee Combo.
F R O G, GS