It seems the c 10 and c 20 panel with the filler door towards the rear has a larger tank , about 18 gallons where as the c 30 with the filler door just behind the
drivers door has it seems only a 15 gallon tank .
My 62 c 30 has the original tank and when the needle hits the E mark it quits . When at this point when I fill up I'm hard pressed to get a little better than 15 gallons US.
when filling up right to the cap .
I average just over 12 mpg a US. gallon and am comfortable running about 150 miles between fill ups.
That being said on the long haul I generally carry a full jerry can although I haven't had to use it yet .
John
