Bobby said:I broke one tab off the first time I did my oil change @ 1800 miles. I slapped it back on thinking it'll probably fall off. I changed my oil again at ~7000 miles since I put on a fram filter (crap from what everyone told me) and the cover was still there. Now that I have a genuine Toyota filter and Syntec 5w30 in there, I'm good until 17,000 miles.
Pitbull said:10K mile OCI? With the 4.7 V8 you might be ok if you were using Mobil 1 but your warranty will be history on any oil related problems with anything longer then a 5K mile OCI.
PS - Checkout what the guys on www.bobistheoilguy.com think about Castrol Syntec 5w30, they like the Castrol GTX 5w30 better then the Syntec. They love the imported Castrol Syntec 0w30.