Got that… But the turbo Skyactiv requires 5w-30. Is that due to the higher heat in the turbo bearings and turbo coking?
I would say that your climate is close enough to Mexico to give the 5w-30 a try.
No… I run 0w-20 But the 0w-20 and the 5w-30 debate has been going on for a long time on the Miata forums. I expected Mazda factory fill even if it is for the turbo 2.5L to have a similar slug of moly.
One other factor in Mexico is dust. That is hard on a engine. I am still under warranty and going to use Mazda’s requirements but after warranty will use 5w-20.
Looks like Japanese oils do not have any respect for base oil. Moly and VII at least for the 0w-20 equals good MPG.
I am not experienced enough to give you an answer.
I'll give you my review after 18 months of ownership. There is no rev hang and the electronic throttle is tuned perfectly. Along with the 6 speed, its one of the best powertrains around.. As for oil, if you're going to track the car it would probably need a full fledged oil cooler with a temperature gauge. My ND2 had an oil "warmer" but I don't think it would do full track duty. For regular use, use a good 0w20 or 5w30 with dexos1 cert. There is not much to be gained with 5w30, they've been running 5w20 since the MZR days. The NA skyactiv engines dont fuel dilute like honda.
How is dust related to oil grade?
It is one of the items listed as severe duty for oil.
Which influences the OCI.
I would suppose you would want a higher MOFT too. Personally I think due to better cooling would favor a 20 weight oil in a warmer climate. In any case CAFE has been adapted in Canada but not in Mexico. The 0w-20 low base viscosity/high moly/high VII is a engineering design to meet. The low viscosity formula works in my view. (at least in the US)
