Owners Manual page 356 Max allowed oil consumption says 1.1 Qt per 600 MILES? hopefully a TYPO? because that means it could use all 7 Qts before the next service interval of 5K miles or 6 MONTHS ? Makes no sense but that's what Owners Manual states and thats what they will tell you also, when you take it in. BTW the 2 dots on the dipstick represent 1 1/2 Qt not 1 Qt, i called and talked to Toyota and they told me this! Good Luck, If it were mine i would trade it tomorrow!! Even if something is claimed on warranty they wanta see reciepts and records and dates which will also void engine warranty on the 'TIME " interval requierments of 6 months if they were not met! Good Luck with finding reciepts cause they will probably ask for them.
Toyota Parts and Service
Pep Boys could explain your problem but oil should be checked along with tires "WEEKLY" never know when something can go wrong as you now know!