Four gallons is 512 fluid ounces.
Four gallons.
4 US gallons = 512 US fluid ounces
512 fluid ounces is four gallons. (128 fl oz per gallon)
20 gallons = 2,560 ounces.
13.2 gallons is 1,689.6 ounces.
8320 ounces is 65 gallons.
169 ounces is 1.32 US gallons.
Two gallons
15,360 fluid ounces is 120 gallons.
15 US gallons = 1,920 ounces.
400 US gallons = 51,200 ounces.