I just wanted to alert everyone here about a possible design defect in the 2GR-FE V-6 engine. There have been many reports about an oil line leaking/rupturing causing catastrophic loss of oil in Avalons, Camrys, and RAV4's with the V-6. Here is some information I've cobbled up from several forums:
There is a TSB out for the newer Avalons concerning a small pinhole leak from the rear bank VVTI oil feed hose which can grow into a larger leak, and in some cases, cause catastrophic failure due to lack of oil in the system.
The problem is that Toyota has ONLY issued a TSB for the Avalon, even though this EXACT same condition can (and has) happened on ALL Toyota vehicles using the 2GR engine. This is causing a MAJOR headache for dealerships (especially the people that handle the paperwork), along with the customers that go through this problem.
Try calling a Toyota dealer and ask for the parts department. Ask the guy for Part 15772-31030 "Pipe Sub-AS". When they tell you its on national backorder ask them why. From what I can tell the V6 engine, a 2GR-FE is also used in the Avalon, Sienna, RAV4, Lexus ES and RX 350 models, Highlander and Previa.
The part # 15707-31030 is the one with the rubber connection.
The replacement part that was installed in all of the RAV4s Limited V6s on 04/2008 and later is metal and the part number is 15772-31030.
Here is the Avalon TSB:
It's a little hard to see from the picture, but that hose that is circled is whats causing the problems. its the connection between two preformed metal hoses and banjo fittings, one of which goes up and over the valve cover to the VVTI (as you can see in the pic), and the other loops around the back side of the bank and is connected to the block's oil feed.
Here's a picture of the line with the rubber hose from a 2006 RAV4:
And here's the same part on a 2008 RAV4 built after the 04/08 upgrade. Notice the all-metal line:
So any of you V-6 owners who are curious should go out and check to see what version you have. It might help to pop off the plastic engine cover to see more clearly. If you do have the rubber hose keep an eye on it and your oil level. Hopefully, Toyota will issue more TSB's for the other models.
Here are more examples from other forums:
http://www.tundrasolutions.com/forums/rav4...rav-4-v-6-lost/
http://www.camryforums.com/forum/showthrea...19036#post19036
http://www.carcomplaints.com/Toyota/Avalon...ing_light.shtml