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Originally Posted by JFP in PA
That is "Castrol Edge with Syntec Technology", a replacement for the old Syntec, which holds ACEA A3,B3,B4. "Edge", which is not available in 10W-40, does not hold those ACEA ratings, it holds different ones (A1, B1, B5). The replacement Syntec is basically the old product with a different additive package, which limited UOA's say is doing pretty good
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so there's a "Castrol Edge with Syntec Technology" and a regular "Castrol Edge" that's different... what marketing putz came up with that.
regular 'ol Castrol Syntec is getting hard to find around here - it used to be everywhere. now the regular places I go have limited supplies of it.