How Much Propane Fills 10 Gal Tank?

[peteco]

Roadtrek 210P has 10 gallon, 45 lb propane tank spec in the Roadtrek Brochure. Typical fill specs indicate fill to 75-80%.

Has anyone done a fill from empty and how much propane did the tank take?

[RT-NY]

For my model year, the brochure says it is a 35lb/8 gallon tank. But it is stamped on the tank as 8.4 gallons. I did a fill from completely empty this summer at about 70 degree temps and the overfill prevention device in the tank stopped it at exactly 7 gallons. That seems about in line with the 80 perecent fill spec that you mentioned.