I thought I would post the response from Toyota in case anyone is interested:
Thank you for contacting Toyota Motor Sales, U.S.A., Inc.
We appreciate the opportunity to address your inquiry.
SAE 5w30 is the recommended oil viscosity for the 2006/2007 Toyota 4Runner V6 and the Toyota Tacoma V6. In terms of maintaining the integrity of your warranty, our recommendation is adherence to the Scheduled Maintenance Guide. The engine oil and filter should be replaced every 5,000 miles or 6 months, whichever comes first.
The recommended oil capacity is 5.5 quarts with a filter and 5.2 quarts without the filter change for both the 2006/2007 4Runner and Tacoma.
We recommend you follow all of the specification in the Owners Manual. Please refer to the section titled “Specifications” in your owner’s manual for more information. The manual is available online at
www.toyotaownersonline.com.
If we can be of further assistance, please feel free to contact us by responding to this email or by calling 1-800-331-4331. We are available from 5 AM to 6 PM, Pacific Time, Monday through Friday and from 7 AM to 4 PM, Pacific Time, on Saturdays.
Gilbert Dyer
Toyota Customer Experience
