Switched to 5W-30 from 0W-20

[N7turbo]

Note that the Skyactiv 2.5L is not specified to use 40 weight oil.

https://www.mazdausa.com/static/manuals/2023/cx-5/contents/07030402.html

Only up to 30 weight.

 

[Kedis82ZE8]

This is always a hard, non-negotiable requirement. The rest you are correct about.

Sorry.. just hasn’t been my experience in nearly 40 years of driving.. never chased latest spec and always had great reliability on my engines. Aggressive service schedules served me well or I just made reliable choices in vehicles with greater tolerances to oil variances

 

[N7turbo]

Considering the spec includes improved engine cleanliness and protection from low-speed preignition (for example by reducing the calcium in the formula) it is important to just use the latest oil. In fact, there is no reason to ever use old spec oil. There is simply no advantage.

 

[Kedis82ZE8]

I’ve probably been moved along without paying attention to spec with my Amsoil use over the years.

 

[RattleCanAR]

My drive to work is 8-10 minutes at 35-40mph. My car won’t warm up at all unless I let it idle for 5 minutes first.

 

[cz5gt]

Considering the spec includes improved engine cleanliness and protection from low-speed preignition (for example by reducing the calcium in the formula) it is important to just use the latest oil. In fact, there is no reason to ever use old spec oil. There is simply no advantage.

What do you think about the new 0w16 oil that Toyota uses?
Do we expect the new CX5 to require it?

 

[cz5gt]

My drive to work is 8-10 minutes at 35-40mph. My car won’t warm up at all unless I let it idle for 5 minutes first.

you are ready for 4k oil changes. That is severe usage and long term not so good unless you change oil more frequently.

 

[RattleCanAR]

I do the oil very often because of this. I am with ya on this.

 

[N7turbo]

My drive to work is 8-10 minutes at 35-40mph. My car won’t warm up at all unless I let it idle for 5 minutes first.

My drive to work is also 8-10 minutes at 35-40mph.

Both my 2.5T and 2.0 reach the 210 mark on the gauge during that drive and start providing heat when I'm about 1/2 way there. At worst, the heat starts working about 3/4 way there.

Subjectively I remember the 2.5G taking longer to warm up, but I don't have any hard proof.

 

[Kedis82ZE8]

I would think the the turbo cars would have to heat up faster than NA due to turbo heat soak via the liquid cooling.

 

[N7turbo]

Yeah but the Miata heats up really fast, too.

 

[Kedis82ZE8]

I need to monitor mine via OBD some morning to see how long it takes to get to full operating temp…

I’ve never noticed it to be slow to warm up and is already throwing out some warmth even when the low temp light goes out which isn’t that warm.

I’ve never researched whether different thermostats were being used between models and engines

Side note.. how has fuel dilution been for you with oil? That is a short commute. Do you change your oil at shorter intervals?