If you still have the owner's manual for the 2004 echo there should be a specifications section that will tell you the oil capacity (drain and refill) with a filter change and without a filter change. For instance, I have a 2002 Toyota echo. On page 217 of my owner's manual it shows that the capacity with a filter change is 3.7 liters, 3.9 quarts or 3.3 imperial quarts. I would imagine that the oil capcity of your 2004 echo is similar. After you change the oil and filter add the 3.9 quarts and check the oil level on the dip stick. Also note, my owner manual states that the amount of oil to fill between the low level and the full level on the dipstick is 1.5 liters, 1.6 quarts and 1.3 imperial quarts. Hope this answers the question.
3.5 liters
http://www.carspace.com/guides/Toyota-Echo-How-to-change-oil
Bottom right hand side (if you're sitting in the car) of the engine oil pan. 14mm wrench.
You have to take out the engine to get to it.
(3.7 liters or 3.9 quarts, 5-30 SAE) This includes the oil in the filter.
For my 2002 Echo it is 3.7 Liters with a filter change.
3.6 litres
5-30
3.6 liters
3.5 Liters
A 2004 Toyota Tacoma takes 5.5 quarts of oil, according to the owner's manual.
It is important to know how much oil a car will need for an oil and oil filter changed. For a 2004 Toyota Camry 4cyl, the oil needed will be 3.8 quarts of SAE 5w30 oil.