2015 Skyactiv M6 Oil Change

[Aveen15]

Any recommendations on 0w-20 oil used with the Skyactiv engines. The manual recommends Castrol or the Mazda brand with molly. I thought I would use the Castrol since it is easier to source and cheaper then going through the dealership. Any known benefits of the Mazda molly?

 

[Traum]

Not an M6 owner myself, but I'd be hard pressed to believe that for street use / DD duty, there would be any major or noticeable difference between any of the major brands as long as you stick to an appropriate OCI with the appropriate viscosity.

 

[sbronemann]

I have been using Royal Purple 0W-20 in the last 2 oil changes. Seems to hold up very well. I change mine usually right around 10k and has held up extremely well.

 

[eyedocorlando]

The Mazda brand 0W-20 has the best VI (Viscosity Index) of 221, as a result it's thinner in the cold and thicker in the heat than any comparable off-the-shelf 0W-20 including Pennzoil and Valvoline products. With that said, any good SN grade 0W-20 will work, but I try to stick to the OEM oil and filter because it's IMO the best for the car.

 

[flash gordon]

Moly additive is nothing new. It's old technology. It's been around forever in oil and grease to combat higher pressure. I am sold on Mobil 1, especially their extended wear oil. Been using Mobil 1 for over 25 years and never had any issue with the oil. There are more expensive small makers of synthetic oil but not better than Mobil 1.