Actually, I'd be interested to see the TSB, as well. When I took the New Model Training for the Forte, our instructor there told us of the occurrence, and said he was going to issue something to the dealers. I just assumed it was done, and never followed up on it. I just spent 20 minutes searching through 5 years of TSBs, Tech Tips, Recalls and Service Actions and I can't find anything other than the announcement when they swapped to 5W-20 for the 2005 model year. At that time they have said that 5W-30 is acceptable if 5W-20 is unavailable.
The code is either a P0016 or P0017 and we've only seen them in the Lambda engines (3.3 and 3.8 V6) thus far and it's only been a few isolated instances.
As far as I am concerned, as long as your oil is clean, I don't much care what you put in it - as long as it's not 15W-40!
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