Break in oil consumption (2024 CX-5 Sig)

[Lazy2.5]

@AL Cx5 I was hard on my engine back when it was new in 2015. It had 3000km at the time. I caused some damage to the internals as evidenced by oil consumption. Switching to a thicker grade (5w30) and noting the engine to feel smoother is a tell tale sign that there is some internal wear which the thicker oil is smoothing out.

Fast forward to the last year or two (and religiously using at least 5w30) oil, the engine sealed itself up and doesn't burn any oil at all.

 

[hsdejong]

I think the Mazda 5w-30 is a regular mineral based oil, not synthetic.

Indeed. According to the parts guy from my Mazda dealer who has worked there all his life, Mazda OEM 5W-30 oil sold in the US is rebranded Castrol GTX conventional oil.

The MAZDA SKYACTIVE (petrol) engines are high performance engines with high compression.
A quick search on the internet shows me that Original Mazda 5W30 is synthetic oil. At least in The Netherlands.

 

[jadmt]

The MAZDA SKYACTIVE (petrol) engines are high performance engines with high compression.
A quick search on the internet shows me that Original Mazda 5W30 is synthetic oil. At least in The Netherlands.

In the usa it is conventional oil. Makes no sense for sure

 

[N7turbo]

In the usa it is conventional oil. Makes no sense for sure

The question is, is the factory using different oil depending on the destination of the car? And how do they implement that on the assembly line?

 

[jadmt]

The question is, is the factory using different oil depending on the destination of the car? And how do they implement that on the assembly line?

True probably whatever Japanese market uses.

 

[propflux01]

I’m betting Japan uses whatever oil in all their vehicles leaving the assy line, I would guess idemitsu (or rebranded thereof). Here in the states they are probably required to use a North American oil because they are usually specced a bit different, so what you get changed here is not what was put in the vehicle at assy.

 

[propflux01]

@AL Cx5 I was hard on my engine back when it was new in 2015. It had 3000km at the time. I caused some damage to the internals as evidenced by oil consumption. Switching to a thicker grade (5w30) and noting the engine to feel smoother is a tell tale sign that there is some internal wear which the thicker oil is smoothing out.

Fast forward to the last year or two (and religiously using at least 5w30) oil, the engine sealed itself up and doesn't burn any oil at all.

That’s what I’m hoping is going to happen on my end.

 

[Lazy2.5]

I’m betting Japan uses whatever oil in all their vehicles leaving the assy line, I would guess idemitsu (or rebranded thereof). Here in the states they are probably required to use a North American oil because they are usually specced a bit different, so what you get changed here is not what was put in the vehicle at assy.

To be honest, It hardly matters what oil you use. So long as you're within a certain oil weight range, and the oil you're using has a sufficient additive package to protect against oil shearing due to fuel dilution, change the oil/filter on time and forget about it.

What goes into the crankcase when the engine is brand new and when you change the oil for the first time (should be around 3000miles/5000km once engine is worn in) is important.

I like to change just the oil filter about halfway through the oils useful life, when the filter starts to become dirty, but the oil itself is still relatively clean. Our oil filters are small.

These engines have a wide "acceptable" range of oil weights to use. As mentioned elsewhere, I have used 10w40, 10w50 in my NA 2.5 after reading that the Skyactiv 2.0 can accept that in a manual for some other market. It's unnecessarily thick for most circumstances, certainly for cold starts, but the vehicle liked 10w30/40 in summer heat. I use 5w30 or 40 for the winter. Granted I have more than 300k km on my engine. Turbo engines have a more narrow oil weight range due to oil passages in the turbo, despite the same generous internal clearances as found on the NA variant. However, the engineers at Mazda obviously found that 0w20 is too thin to get away with on the turbo variant, which is a good thing, because of intense heat and oil shearing inside the turbocharger when under boost.

Synthetic vs non synthetic hardly matters. The additives inside the oil and when you change it is what does.

 

[Lazy2.5]

@propflux01

Keep an eye on your oil level, and keep us updated when you find that your oil consumption slows down. In the meantime, please don't worry, as mentioned prior.

 

[N7turbo]

Synthetic vs non synthetic hardly matters. The additives inside the oil and when you change it is what does.

It does when it comes to heat-related viscosity loss. Modern oils hold up a lot better, especially the natural-gas derived Pennzoil I run.

 

[hsdejong]

However, the engineers at Mazda obviously found that 0w20 is too thin to get away with on the turbo variant

My dealer in the Netherlands fills my naturally aspirated and with a manual transmission CX-5 engine with original Mazda 0W20 according to Mazda's instructions. I don't know about the turbo version.

Synthetic vs non synthetic hardly matters.

Difference between synthetic oil and mineral oil | TotalEnergies

There are two main types of engine oils: mineral oils and synthetic oils. Let’s explore their features and differences!

services.us.totalenergies.com

"Mineral oils are ideal for older vehicle models that were developed to run on less technologically advanced lubricants"

 

[jadmt]

It does when it comes to heat-related viscosity loss. Modern oils hold up a lot better, especially the natural-gas derived Pennzoil I run.

I only run Pennzoil and the warranty is also something worth noting. I know people say you can not collect on it yet I have never heard of any one getting denied so that is something to think about.

First Full Synthetic Motor Oil Made with Natural Gas

Pennzoil offers motor oil, filters, fluids and more. From passenger vehicles to high performance cars, Pennzoil provides the protection you need.

www.pennzoil.com

 

[Kedis82ZE8]

My 2016 CX-5 2.5L NA with 55,000 miles is consistently using ½ ~ ⅔ quart of oil in each oil change. I use Flexible oil change schedule and it’s about 5,000 ~ 6,200 miles for that kind of oil consumption since new, including the first oil change at 5,000 miles.

And I use Mazda Moly 0W-20 oil exclusively.

I was looking at my average change mileage over the years and appears to be right around 4500 miles and currently at 86k miles on my '15 AWD GT. I'm not showing any visual usage off the full dot on dipstick over the years. This is one reason I've never had a desire to move off the 0W-20 Mazda Moly.

Looking back it appears I did first change at 3 months and 4k miles.

 

[madar]

I agree. At least every car owner’s manual I’ve seen has similar statement in break-in period section which usually is the first 600 ~ 1,000 miles.

From our Mazda:
View attachment 330284


From Honda:

View attachment 330286

I agree. At least every car owner’s manual I’ve seen has similar statement in break-in period section which usually is the first 600 ~ 1,000 miles.

From our Mazda:
View attachment 330284


From Honda:

View attachment 330286

Good video on break-in periods.

https://www.youtube.com/watch?v=_6nWCQ_70J0

 

[vrsick]

Good video on break-in periods.

https://www.youtube.com/watch?v=_6nWCQ_70J0

I was about to post this video.
I purchased my CX-5 on July 9 2024. From day 1, I've kept an eye on oil consumption. I didn't see any oil consumption. Exactly one month later, at 1,200 miles, I changed the oil. The color of the oil was very dark. It looked like it had over 5,000 miles on it. I'm glad a came across this video. Typically I change motor oil on all my vehicles every 4,000 miles.

 

[ColoradoDriver]

My 2016 CX-5 2.5L NA with 55,000 miles is consistently using ½ ~ ⅔ quart of oil in each oil change. I use Flexible oil change schedule and it’s about 5,000 ~ 6,200 miles for that kind of oil consumption since new, including the first oil change at 5,000 miles.

And I use Mazda Moly 0W-20 oil exclusively.

Same on my 2.5L NA. I did switch to 5w30 full synthetic from 0w20 full synthetic and that helped a bit. I still lose some oil between changes. I try to stick closer to a 5000 mile OCI these days since I do more city driving than highway. I had my oil pan resealed about 3 years back because I had a small leak develop, which explained some of the loss.

Its never really been enough to need to top up between changes unless I'm going for a longer 7500 interval or something, but I avoid that these days.

 

[toucantom]

I know it's not bad, but the OCD in me isn't happy, considering this is the first car I've ever had use oil.

I am going to let Mazda dealer do the first 5K service, to get it "on the books" and probably do it myself for the rest of its life.

No, just normal driving. I think I've pushed it once or twice passing a car on a two-lane, but nothing over 3K and not long. Nothing I haven't ever had to do in any other new car I've had.

The current is between 26.8 to 29.7. At this moment it is 30.1

I was hoping to stay with the 5-30 but If I have to move up I guess I will.

My 2023 Premium Plus turbo with 7000 miles has never used oil. Only gets 23-25 mpg though. We drive it very conservatively, only punch it when needed (and sometimes for fun).

 

[propflux01]

For what it's worth, the service dept receipt states "5w-30 Full Synthetic---OEM Filter" used. I'm checking it weekly, as my OCD determines, and will report any change.