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Originally Posted by ekpolk
The original poster's interpretation of the TSB is incorrect. Right up in the header, and again in the middle of the first page, it clearly says that it applies ONLY to 06 and 07 model year vehicles. If your vehicle is a 2005 model or older, this TSB simply does not apply to you.
The TSB is ambiguous because it also lists, in the table, engines that went out of production (for US vehicles anyway) before the 06 MY. Don't be led astray by this error. If the TSB is N/A to your car, whether its content is right or wrong is irrelevant.
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It is my opinion that you are the one who is missinterpreting the TSB.
The reference to '06 and '07 model year vehicles is related to the first part of the TSB which states that "Toyota Motor Cormporation manufacturing plants have begun using ILSAC GF-4 engine oil." and "This oil has been set as the Toyota genuine engine oil, starting in February 2006 for the U.S."
The second part of the TSB shows (IMO) the engines that Toyota has either tested with the oils, or agreed that they are able to be used based on engine tolerances and clearances. That is why the 5W-20 has been allowed in more engines than the 0W-20, it is mush less of a viscosity change from 5W-30. The bottom part of the table which lists the allowed engines for 0W-20 clearly states that it is '06 - '07 engines only.
My local Toyota dealer has agreed with my interpretation and recommends use of 5W-20 in my 5VZ-FE engine, as long as the oil is GF-4.
This is no error. If you have proof of the error, such as a retraction by Toyota, then post it. Otherwise, this TSB is quite clear and is not to be considered an error.