Yes, I recall buying some UltraGuard Gold (full synthetic wire backed media then) spin-ons way back in 2002 for the Z06. I think Fram came out with the Ultra (whatever it was called back then) to compete with the UG Gold, or maybe it was the other way around ... not sure on the exact timing.
The filter in the eBay Auction appears to have a June 99 date code, The Fram Xtended Guard came out right around 2000 from what I found around the time Allied-Signal took the Honeywell name, I don't think the Xtended Guard ever had the Allied Signal branding on the packaging yet Extra Guard and Tough Guard filters still used the Allied Signal branding until a packaging update sometime in the early to mid 2000sYes, I recall buying some UltraGuard Gold (full synthetic wire backed media then) spin-ons way back in 2002 for the Z06. I think Fram came out with the Ultra (whatever it was called back then) to compete with the UG Gold, or maybe it was the other way around ... not sure on the exact timing.
I don't think they have been for a long time, I found a post from 2012 where someone bought one and found, at that point they were identical to a Champ made Mobil 1. https://bobistheoilguy.com/forums/threads/new-acdelco-oil-filter-cut-open-same-as-mobil1.173946/
