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Message: [QUOTE="lincolnlocker, post: 1565424, member: 944"] Sorry. Its not a true synthetic when you actually break it down. Nobody can mass produce a true synthetic and sell it at the price they do. Im actually talking about the blue jug. I haven't seen any data on the "synthetic" version grey jug. Blue jug used to be called a semi synthetic or synpower.. poured like it too. Everything, even Lubrication engineers lost a lot of their zddp add pack when switching to ck4... the only thing the blue jug delo has going is that it doesn't sheer as quick. I would assume that the grey jug is going to be comparable to the original delo 400le synpower... wish i had a 7.3 to do the testing. Id try that one. Their original "synthetic" delo 5w40 wasnt worth a shit in a 7.3 though. Amazon "synthetic" oil isnt synthetic either. Or the parts stores brand versions. Or most any of the oils at the parts stores that say synthetic aren't true synthetic.. more of a semi synthetic. Some Amsoil products aren't either. But you still pay for it. [/QUOTE]

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