We have run into a few problems with the forum upgrade.

Currently only registered users can post. If you do not want to register, please send your question via the contact form and I will post it anonymously for you.

Really sorry about the trouble. We have a support ticket in and hopefully the problem will be fixed soon.

Also, there are 231 cubic inches per gallon.
So, if we know there are 231 cubic inches per gallon, and you have 11,250 cubic inches, we can calculate as follows;

(11,250 cubic inches )/ 231(cubic inches per gallon) = 48.7 gallons total

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