Is it over full and where is the vent .

Ok for the record, off my milk jug. one Canadian qt is 1.14 liters; so an ozCan would be .0285 liter.
Your sissy qts having just 32 oz, so they would then be .912 liter or 912 cc
Cuz an ounce is an ounce/the world around, or some such kiddy-rhyme.

We get a lot of stuff up here that's labeled .91liter; a straight-up re-label of a quartUS .
At the supermarket, we have to be careful when price shopping.It's getting trickier all the time.