CX-5 NA Oil weight 0w20 or 5w30?

[Sekmor]

Is it ok to use 5w30 in my 2.5L (non turbo)??
The manual states to use 0w20 for US/Canada. 5w30 is an option if living somewhere else.
My other vehicles use 5w30, and always have a case sitting on the shelf. I'll continue to buy that special jug for the CX5 but it would be convenient if they all used the same weight.

 

[ADS-B]

Yikes. I think the question was just about if 5w-20 was ok to use. Not the 0w-20 for US owners or 5w-30 pretty much everywhere else question.

Yikes, indeed. If readers would only and kindly do some reading throughout the website before posting a question which has been answered thousands of times by almost every Mazda driver around the Solar System. He was asking about 5W-30, not 5W-20.

 

[afreed1]

Does someone have information about the engine bearing clearance specs for US bound Sky-active G engines being the same as the clearance specs for other parts of the world? The engine also has an electronically controlled oil pump. Is the oil pressure mapping the same for all Sky-active G engines?

 

[Buzzman12]

Does someone have information about the engine bearing clearance specs for US bound Sky-active G engines being the same as the clearance specs for other parts of the world? The engine also has an electronically controlled oil pump. Is the oil pressure mapping the same for all Sky-active G engines?

I don't have the specs to answer that, but what I will say is that logically, it wouldn't make sense for Mazda (or any other make) to manufacture an engine with slightly different bearing tolerances in the same engine, just for US bound cars, and by extension, Canadian cars. Why would they go to the trouble and expense to do that? Just so that they can specify 0W20 instead of 5W30? The added cost and logistics to do that is not worth it. Financially it doesn't make sense.
Note too that the same engine with a turbo attached to it specifies 5W30. Does that mean the bearing clearances are different for the turbo engines? I highly doubt it.
The reason they specify 0W20 in North America is because of CAFE requirements, nothing more.
If it turns out otherwise, I'd be very surprised.

 

[afreed1]

I don't have the specs to answer that, but what I will say is that logically, it wouldn't make sense for Mazda (or any other make) to manufacture an engine with slightly different bearing tolerances in the same engine, just for US bound cars, and by extension, Canadian cars. Why would they go to the trouble and expense to do that? Just so that they can specify 0W20 instead of 5W30? The added cost and logistics to do that is not worth it. Financially it doesn't make sense.
Note too that the same engine with a turbo attached to it specifies 5W30. Does that mean the bearing clearances are different for the turbo engines? I highly doubt it.
The reason they specify 0W20 in North America is because of CAFE requirements, nothing more.
If it turns out otherwise, I'd be very surprised.

I agree with your logic but would like a definitive answer so that I can put this oil weight debate to rest permanently. ....at least for myself.

 

[ADS-B]

I agree with your logic but would like a definitive answer so that I can put this oil weight debate to rest permanently. ....at least for myself.

Your answer is in the manual, if you carefully read it: 0W-20 is required to achieve optimum fuel economy. CAFE requirements.

 

[cz5gt]

I agree with your logic but would like a definitive answer so that I can put this oil weight debate to rest permanently. ....at least for myself.

you can use either oil 0w20 or 5w30 full syn.
Doesnt matter. Just make sure to change it ~5k miles if driving in lots of city traffic.

 

[Mazdiod2]

This was posted recently. Using 0w-20 allows easier starting, especially below -20F.
The important thing is to use a oil with the proper formulation, designated by the API classification. The bearing clearances are the same in Europe as the US. I'm not sure what the oil pressure mapping is but the recommended filter is the same.

I've tried both 0w-20 and 5w-30 and I can feel just a little difference. Maybe that could translate into better MPG but I get excellent MPG with 5w-30 on long trips.
For mostly short and local trips 0w-20 might have a slight advantage, depending on the brands of oils you are comparing. I use Pennzoil Platinum, which is a farily 'lightweight' 5w-30.

Here’s oil viscosity chart from Mazda CX-5 Owner’s Manual world wide:

View attachment 323506

View attachment 323507

 

[cz5gt]

oil pressure ranges are differently programmed for CD (plus CCV) and without CD.
Europe has/had no CD in the past but I think they may have it now
Without CD the pressure range (references) is a bit higher.

But at the end of the day its not that big of a deal if using decent oil in the right specs although viscosity and temp plays a certain role
It can be checked through the obd too on wamed engine at 1500 and at 4500 rpms.
If pressure is lower it will trigger the warning lamp.

 

[N7turbo]

Note too that the same engine with a turbo attached to it specifies 5W30. Does that mean the bearing clearances are different for the turbo engines? I highly doubt it.

I could see the turbo engine being different, as a lot of the parts are not shared. It isn't just the NA engine with a turbo added to it.

But different versions of the NA engine customized for oil specs? I doubt it.

 

[madar]

0w-20 is recommended according to the owners manual, not set in stone that you have to use it in warranty or out. It's your choice. I use 5w-30 year round.

 

[Lazy2.5]

Does someone have information about the engine bearing clearance specs for US bound Sky-active G engines being the same as the clearance specs for other parts of the world? The engine also has an electronically controlled oil pump. Is the oil pressure mapping the same for all Sky-active G engines?

Why would they use different clearance specs for different markets? Same engine.

I found somewhere online, that the Skyactiv-G 2.0 is good for up to 10w50. The 2.5 is similar.

 

[GTXT23]

Is it ok to use 5w30 in my 2.5L (non turbo)??
The manual states to use 0w20 for US/Canada. 5w30 is an option if living somewhere else.
My other vehicles use 5w30, and always have a case sitting on the shelf. I'll continue to buy that special jug for the CX5 but it would be convenient if they all used the same weight.

The Manual allows for either -- If you live in hot weather most of the year --I would default to the 5-30 - or if you can do frequent changes use Mazdas 0w-20 GF5 w/Moly expensive but the gold standard --its like 10$-11$- A QUART NO 5 gallon jugs Mazda sell the cases by the 12 ?? figure that one out -- Some dealers clip 5w-30 buyers because its manditory on the Turbo -- so IF Mazda says its Ok -- Use either --- My old 3 has been using 0-20 for 160,000 miles dosent burn a drop- runs like a scared animal

 

[ADS-B]

I hope this clarifies a bit your dilemma:

CAFE only applies to United States ( I don't know about Canada). The rest of the world doesn't give a sh*t about US CAFE requirements, for the very same car sold all over the globe, Mazda says you can use 5W-30.
The way I understand CAFE, in a very simplistic way, of course: Mazda did some lab test and they showed the results to the legislators, hey, look, if we use this 0W-20 oil we reduce fuel consumption and we comply with your bulls***. And the legislators approved it so Mazda has to put it in writing, for the consumer, to be legally covered for CAFE. But in reality fuel consumption depends on so many factors, including your driving style! Your car will never get to those lab test numbers! Or very unlikely!
So, yes sir, you can use 5W-30, no sweat! Or take this rule ( no science behind it) : do you get snow on the ground in the winter - use 0W-20. Do you live in the lower half of the US, you see snow once every few years or so - you can go with 5W-30.

This question has been asked so many times on this website and at this point I simply do not understand why. Why is this still an issue for a lot of Mazda drivers. I just don't get it.

 

[Lazy2.5]

I hope this clarifies a bit your dilemma:

View attachment 334826
CAFE only applies to United States ( I don't know about Canada). The rest of the world doesn't give a sh*t about US CAFE requirements, for the very same car sold all over the globe, Mazda says you can use 5W-30.
The way I understand CAFE, in a very simplistic way, of course: Mazda did some lab test and they showed the results to the legislators, hey, look, if we use this 0W-20 oil we reduce fuel consumption and we comply with your bulls***. And the legislators approved it so Mazda has to put it in writing, for the consumer, to be legally covered for CAFE. But in reality fuel consumption depends on so many factors, including your driving style! Your car will never get to those lab test numbers! Or very unlikely!
So, yes sir, you can use 5W-30, no sweat! Or take this rule ( no science behind it) : do you get snow on the ground in the winter - use 0W-20. Do you live in the lower half of the US, you see snow once every few years or so - you can go with 5W-30.

This question has been asked so many times on this website and at this point I simply do not understand why. Why is this still an issue for a lot of Mazda drivers. I just don't get it.

Better fuel economy? We're talking approx 0.2 mpg difference here. 0W20 might be helpful if you live in northern Canada.