Ha! I came by to share the following and the thread's already tee-d up.
After watching the Lake Speed video on lubricant supply chains and the big GTL plant going offline, I bought an oil change's worth of Quaker State Euro. I probably won't be due for this fall, but I figured that while we aren't completely sure it has GTL base oil, if GTL is indefinitely offline, Quaker State would be the first to see it go since it never officially had it in the first place.
I also wondered if I might be too late. Given they seemed to anticipate the Iran war with the Pennzoil Ultimate labels, it's equally possible they anticipated a shortage by reformulating Quaker State Euro.
I ordered it Tuesday, online at Walmart for free home delivery. It came to Portland, OR from Chino, California. My fear that they may have already switched the formulation was unnecessary as the 5 qt jugs had an 18Jun25 date code printed on them. HTH.