there certainly isn't any rust.
I was more concerned if there was a substantial upgrade from the blue to yellow. I guess i shoulda clarified that, haha. I certainly don't expect metal/media/silicone to spoil.
I just didn't want puro classic quality for pureone money.
i was tempted to send it...
I recently ordered a pl24011 for my grand prix 3.8. I received a blue version of the filter, to which i raised an eyebrow. I have the current gold version on there now. upon my research these were changed for the gold version in 2008 sometime. i can't seem to find much info on if there were any...