3 ms·Assuming 1.5 US gallons, this converts to 5.678 litres.by I_complete_me 5y agoAssuming 1.5 US gallons, this converts to 5.678 litres.nxpnsv 5y agoNow we have 3 numbers... US units are great...dr_dshiv 5y agohttps://en.wikipedia.org/wiki/United_States_customary_units https://en.wikipedia.org/wiki/United_States_customary_units