how many ounces in a gallon?

1 US fluid gallon = 128 US fluid ounces
1 Imperial gallon = 160 Imperial fluid ounces

2 answers

<a href="www.mrdeluofficial.com/2020/09/how-many-ounces-in-gallon_11.html">How many ounces in a gallon</a>
Not only is a US gallon different than the imperial gallon, but the US fluid ounce is
different from the Imperial fluid ounce, as you showed in your post.
To confuse the issue even further, a fluid ounce measures liquid, while a regular ounce
weighs mass.
All the more reason for the US to finally go metric.

in effect you answered your own question, so what else is needed here?