what's the gallon size gas tank on a 1994 toyota camry .And how many gallons of gas does it hold.Please answer asap.

I just need to how many gallons of gas does it hold because i just bought one used and it runs well except for some small miner things .But when i go to put gas treatment in the tank i need to know the gallon capacity so i will know how much treatment to put in .I have another question i how long the transmission usually last on a 94 cam with 148,000 miles if you keep the fluid changed?One more question if the fuel injection feels a little clogged by the car sitting before i puchased what do i have to do besides putting in gas treatment to clear the flow of the fuel injection.Give me clear details what to tell the mechanic i need done because if i act like i don't know what's going on the will do something expensive i don't need done and charge me a whole lot of money!e-mail me at mocha_teddybear@comcast.net