Originally Posted by haggler
This is the oem mazda oil for Europe made by Total. Can tell by the packaging. Comes in 0w20 and 5w30.
The USA Mazda "moly" oil is made by
Idemitsu - ZEPRO Eco Medalist Advanced Moly. On the amazon questions section Idemitsu confirms it's the Mazda factory fill, maybe Subaru also.
Subaru uses the Ecomedalist Dex1 version.
I actually run that in my Mazda, as I think it's a better oil. Much lower NOACK and higher TBN. It has less moly, but still a ton (350 ppm) compared to virtually any other oil. It's a little down on VI but still super high at 205.
IMO, Mazda recommends the Moly oil mostly for fuel economy reasons. I think the EcoMedalist Dex1 is better all around, as it's still a very high moly oil but has better specs in other areas. The additive package is different, but should still be very effective, especially given the significantly higher TBN. Almost always much cheaper, too.
That said, from what I've seen it really doesn't matter too much, the Skyactiv engines are shaping up to be very reliable and you can run any decent SN/SN+/SP 0w20 without issue. I think the filter matters more for these cars, as Mazda has a particular set of specs that are only really met by one aftermarket part (the Wix/NAPA 57002/7002) and even that might not really matter too much.