From the 2006 Scion xB owners manual (pg 229):
Recommended oil viscosity: 5W-30
Oil Capacity:
w filter 3.7 Liters / 3.9 quarts / 3.3imp quarts
w/o filter 3.4 Liters / 3.6quarts / 3.0 imp. quarts
4.2
3Q but pick up 4Q
4 quarts
4 quarts
4 quarts
4 quarts
4 quarts
The 2006 Scion xA typically requires about 4.5 quarts of oil when using an oil filter change. It's always a good idea to consult the owner's manual for the most accurate information regarding oil capacity and specifications.
3.9 but 4 will work just fine
5.5 quarts
If you mean how many quarts of oil it's 4 if you're also changing the filter. Less if you're not changing the filter.
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