After pouring over numerous PDS's, it seems that Castrol Edge 5w30 is the only Dexos 1 oil that mimics what is provided by other oil companies' robust European formulas. I think in this regard alone it might make it worth checking out. So basically, it is a European car formula that has a Dexos 1 certification. My investigation of Edge started with this [censored] fold out ad in the front of Car and Driver. I guess they reeled me in on that one.
Last edited: