I think I know the answer, but just double checking. Owners manual under capacities has two entries for gas tank. First one says 15.8 gallons. Then there's an entry that says gas reserve 2 gallons. Does this mean:
1) The gas tank actually holds 17.8 gallons; or
2) The little yellow idiot light comes on when there are two gallons left in the 15.8 gallon tank.
I suspect the latter. Can anyone confirm for sure.