The most noticeable difference between the Euro oils and some of the higher end SP oils is the HT/HS. I
still believe the Mobil 1 EP, PUP, Castrol EDGE EP would meet/exceed the euro specs if tested especially for high temperature deposit and oxidation resistance.
The EP offerings from the majors are not just cookie cutter, run of the mill SP oils. They greatly exceed some of the most stringent testing such as the IIIH, by 20-30x.
You can see even by Pennzoil's own chart that PUP matches (in a very general sense) the higher performance that the Euro L does.
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