2AZ-FE Engine Oil Consumption

engine burning eating oil
Consumer Reports Excessive oil consumption isn't normal: Automakers say adding oil between scheduled changes is acceptable. It's not.

TSB Search result Scion S-SB-0024-11 2AZ-FE Engine Oil Consumption: 2008-2009 xB (August 11, 2011) Engine number F190625

Piston ring: oil control ring, low temsion rings reduce friction, oil cleaning detergent/cleaner 
2AZ-FE Engine Mechanical: oil ring

Toyota T-SB-0094-11 2AZ-FE Engine Oil Consumption (August 11, 2011, updated 2/9/2015)

Some 2006 – 2011 model year vehicles equipped with the 2AZ-FE engine may exhibit engine oil consumption. The piston assembly has been changed to minimize oil consumption. Use the following repair procedure to address this condition.

Warranty guideline for acceptable oil consumption is 1 quart per 1,200 miles of operation.
Warranty Enhancement ZE7: 10/31/2016, 10 years or 150,000 miles
Toyota Recall VIN lookup
xB forums, New Scion xB, Scion Life, Club xB

Toyota and Scion Engine Oil Consumption – Class Action Lawsuit
MY 2007-2011 Toyota Camry HV
MY 2007-2009 Toyota Camry
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MY 2007-2009 Scion tC
MY 2008-2009 Scion xB

Class Action Allege Toyota Knew About Excessive Engine Oil Consumption

* Engine Oil Consumption
High Mileage 5W-20 Motor Oil, High Mileage Oil Filter

Toyota U transmission U241E, rebuilt re-manufactured, $2300, $2000 (3-year warranty)
U241E DTC code