If you compare these two posts the UPCs are identical, the FSX2 appears to have been made October 16th 2020(J being the 10th letter means October, right? unless there's a letter that's skipped?) the new FS was filled March 16th 2021, so the FSX2 appears to have been obseleted by the FS
Attached is the UPC for 0w40.
Never mind. I didn’t realize there was an FS and FSx2 both in 5w40.
When I saw FS and obsolete I had to go out and check my stash.
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