We have a Sequoia, which uses exactly the same engine as the Tundra (2UZ-FE V-8). I've used Mobil-1 filters on this engine, and my other vehicles for years, and must have installed dozens of them by now. I always personally inspect each filter I buy, both in the store, and before it actually goes on the engine. I've used both the "standard" size M1-102 (like 05 Tundra), and now use the "tall" M1-209. I also use M1s on my G35 sedan. I have yet to detect any indication of a quality problem with an M1, either in the form of noticeable pre-install discrepancies or in the filter's performance. It's simply not fair to judge a product line based upon a sample of one.