Originally Posted By: wemay
Originally Posted By: d00df00d
Castrol told me GTX Ultraclean is actually a synthetic blend, and therefore a different product from regular GTX.
I guess that could be. But since "GTX Ultraclean" became available, "GTX" has disappeared off the shelves around here. Leading me to believe Ultraclean is the replacement.
Yes, it is the replacement. But it's not something they'd throw into bottles with the old product labeled.
(one would hope, anyway)