It took almost 4 months, but today Toyota made it official in the PriusChat forums that the oil change interval on the 2010 Prius has been upped to 10,000 miles instead of the previous 5,000 mile OCI.

With some new 2010 Prius owners being charged $100+ for an oil change due to the 0W-20 synthetic oil requirements, we have some good news.  PriusChat forum member Sphyrna has posted a document provided by his dealership in Miami showing that the 2010 Prius oil change interval will be changed to 10,000 miles instead of the current 5,000 miles.  The document appears to be a training material for dealerships and contains other pages showing that th