Not an 80 series filter (off of my LX470) but darn sure NOT 'lifetime'.
Yes the filter did it's job... the fuel I poured out wasn't off colored, but the the filter can become quite 'clogged up'.
You won't see or know about all the 'funk' in one unless you cut it open (see mine below). My fuel pump started whining...and its no surprise why.
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Wow that's freaking awesome, I just replaced mine and I do think the whine from fuel pump is gone now that you mentioned it. I gotta go drive it and listen for the difference. Your post need to be in the FAQ.