It's interesting to me that Syntec 5w40 along with GC are both on Castrol Edge's list of oils that won't be in the initial change to Edge w/ Syntech Technology as they are apparently leaving both as is until the new versions get all of the testing done to be able to match their existing specs.
This makes me think it is still perhaps made in Belgium as if they were to mess with it then they would have to retest for the specs, no? I'm not sure myself, just asking. But it makes sense if they're leaving it off the list of grades they are moving to Edge w/ Syntec Technology for that reason then they probably haven't already messed with it, without us knowing, for those same reasons.
I do know this, I've seen some recent used oil analysis of the 5w40 here from the States that is absolutely MOST impressive. The former along with this makes me think it still probably is the Belgium stuff. It's still listed as A3/B4 too isn't it? If so, that alone makes me have faith in the stuff.
I'd love to be able to find some on one of the parts stores sales myself as the current GC run in my car is not doing well on several fronts; and after seeing those two BC used oil analysis on the same car as mine, that were among the best I've ever seen for it, I'd love to get some in my stash to try. Where are you guys getting it at? Is it like GC and only available at certain stores like PB and AZ?
