When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I thought python gave you an answer in the other thread. I'm thinking around 3 gallons though. If you really want to know without any guessing just wait til it comes on and then fill up.
I don't believe the manual states this but I'm just going from memory since I wanted to know this info a while back. I just would fill my tank at various intervals to figure out how much gas I was using and what was left.