2021 Mazda 3 2.5 NA / Penn Ultra 0W20 5,167 mi / 60,767 mi

[Marbles_Garage]

Vehicle is a 2021 Mazda 3 2.5 M/T with 60,767 total miles. The oil is Pennzoil Ultra 0W20, and the filter was a Mazda OEM (Japan made by Roki). This is the third oil analysis over the last 15k miles, as I am keeping a close look at the Potassium and Sodium, which has increased gradually (if slowly). I am having a second Mazda dealer take a closer look at from where the potential coolant intrusion is emanating; I have a case opened with Mazda as well, so they can provide assistance if this dealer does not have success. Ultimately, wear is still low.

M

Thread '2021 Mazda 3 2.5 NA / Unknown 0W20 5,031mi'

Mar 27, 2024

Vehicle is a 2021 Mazda 3 2.5 M/T with 50,450 total miles. The oil is unknown 0W20, and the filter replaced was a Mazda OEM (Made in Thailand); all services to date performed by a Mazda dealer. The oil and filter were changed with Pennzoil Ultra 0W20 and a Mazda OEM filter (Japan) as DIY.

Potassium was flagged in the sample, with no glycol or water contamination. Upon looking at the repair order for the last service it appears that the dealer added a BG additive. SPEEDiagnostix indicated this is the likely source of the potassium marker, and hopefully the levels will diminish on the...

• Marbles_Garage
• Replies: 16
• Forum: Used Oil Analysis - Gasoline

• 
• 

M

Thread '2021 Mazda 3 2.5 NA / Penn Ultra 0W20 5,150 mi'

May 21, 2024

Vehicle is a 2021 Mazda 3 2.5 M/T with 55,600 total miles. The oil is Pennzoil Ultra 0W20, and the filter was a Mazda OEM (Japan made by Roki); this was the first non-Mazda dealer service. One interesting data point for this interval: around 2,700 miles were completed over 4 days on a cross country trip from CA to VA.

.

Potassium was flagged just as it was in the first sample, with no glycol or water contamination. The wear metals are still low and the coolant levels have remained constant over the last ~10k miles, so I will continue to monitor.

Jeff

• Marbles_Garage
• Replies: 13
• Forum: Used Oil Analysis - Gasoline

• 
• 

Jeff

 

[FZ1]

Vehicle is a 2021 Mazda 3 2.5 M/T with 60,767 total miles. The oil is Pennzoil Ultra 0W20, and the filter was a Mazda OEM (Japan made by Roki). This is the third oil analysis over the last 15k miles, as I am keeping a close look at the Potassium and Sodium, which has increased gradually (if slowly). I am having a second Mazda dealer take a closer look at from where the potential coolant intrusion is emanating; I have a case opened with Mazda as well, so they can provide assistance if this dealer does not have success. Ultimately, wear is still low.

View attachment 243496

M

Thread '2021 Mazda 3 2.5 NA / Unknown 0W20 5,031mi'

Mar 27, 2024

Vehicle is a 2021 Mazda 3 2.5 M/T with 50,450 total miles. The oil is unknown 0W20, and the filter replaced was a Mazda OEM (Made in Thailand); all services to date performed by a Mazda dealer. The oil and filter were changed with Pennzoil Ultra 0W20 and a Mazda OEM filter (Japan) as DIY.

Potassium was flagged in the sample, with no glycol or water contamination. Upon looking at the repair order for the last service it appears that the dealer added a BG additive. SPEEDiagnostix indicated this is the likely source of the potassium marker, and hopefully the levels will diminish on the...

• Marbles_Garage
• Replies: 16
• Forum: Used Oil Analysis - Gasoline

• 
• 

M

Thread '2021 Mazda 3 2.5 NA / Penn Ultra 0W20 5,150 mi'

May 21, 2024

Vehicle is a 2021 Mazda 3 2.5 M/T with 55,600 total miles. The oil is Pennzoil Ultra 0W20, and the filter was a Mazda OEM (Japan made by Roki); this was the first non-Mazda dealer service. One interesting data point for this interval: around 2,700 miles were completed over 4 days on a cross country trip from CA to VA.

.

Potassium was flagged just as it was in the first sample, with no glycol or water contamination. The wear metals are still low and the coolant levels have remained constant over the last ~10k miles, so I will continue to monitor.

Jeff

• Marbles_Garage
• Replies: 13
• Forum: Used Oil Analysis - Gasoline

• 
• 

Jeff

NO wear!. Good vis.

 

[E150GT]

Where are you getting Tokyo Roki filters from ?

 

[OneLonelyBurrito]

Outside of the potassium and sodium, the report looks good.

Two possible causes for the potassium/sodium that come to mind are head gasket leak or porosity in the block/cylinder head given Mazda has had some issues with cylinder heads cracking. I would hope its something else that I'm not thinking of. But you'll have to make sure to follow up here if you ever find the cause of what appears to be coolant intrusion.

 

[Marbles_Garage]

Where are you getting Tokyo Roki filters from ?

I purchased a case on eBay.

 

[E150GT]

I purchased a case on eBay.

Oh man. I wish I had done that

 

[fantastic]

This report just confirms more of the trend of K (Potassium) & Na (Sodium) is increasing. It does point to a coolant leak. Not sure which testing method they use but Glycol is "Negative" which seems to be not enough to flag it. I'd ask the lab about that though. The wear numbers seem to be low which is good news.

 

[Urshurak776]

Oh man. I wish I had done that

https://www.ebay.com/itm/285170310538

Bought two cases from them. They have taken offers in the past. I paid $79 shipped. They seem to have gone up a few dollars.

 

[PWMDMD]

Tangent...they need to bust out an IFERROR to get rid of those #DIV/0! It would look much more professional.

 

[E150GT]

https://www.ebay.com/itm/285170310538

Bought two cases from them. They have taken offers in the past. I paid $79 shipped. They seem to have gone up a few dollars.

Thanks!

 

[SubieRubyRoo]

Vehicle is a 2021 Mazda 3 2.5 M/T with 60,767 total miles. The oil is Pennzoil Ultra 0W20, and the filter was a Mazda OEM (Japan made by Roki). This is the third oil analysis over the last 15k miles, as I am keeping a close look at the Potassium and Sodium, which has increased gradually (if slowly). I am having a second Mazda dealer take a closer look at from where the potential coolant intrusion is emanating; I have a case opened with Mazda as well, so they can provide assistance if this dealer does not have success. Ultimately, wear is still low.

View attachment 243496

M

Thread '2021 Mazda 3 2.5 NA / Unknown 0W20 5,031mi'

Mar 27, 2024

Vehicle is a 2021 Mazda 3 2.5 M/T with 50,450 total miles. The oil is unknown 0W20, and the filter replaced was a Mazda OEM (Made in Thailand); all services to date performed by a Mazda dealer. The oil and filter were changed with Pennzoil Ultra 0W20 and a Mazda OEM filter (Japan) as DIY.

Potassium was flagged in the sample, with no glycol or water contamination. Upon looking at the repair order for the last service it appears that the dealer added a BG additive. SPEEDiagnostix indicated this is the likely source of the potassium marker, and hopefully the levels will diminish on the...

• Marbles_Garage
• Replies: 16
• Forum: Used Oil Analysis - Gasoline

• 
• 

M

Thread '2021 Mazda 3 2.5 NA / Penn Ultra 0W20 5,150 mi'

May 21, 2024

Vehicle is a 2021 Mazda 3 2.5 M/T with 55,600 total miles. The oil is Pennzoil Ultra 0W20, and the filter was a Mazda OEM (Japan made by Roki); this was the first non-Mazda dealer service. One interesting data point for this interval: around 2,700 miles were completed over 4 days on a cross country trip from CA to VA.

.

Potassium was flagged just as it was in the first sample, with no glycol or water contamination. The wear metals are still low and the coolant levels have remained constant over the last ~10k miles, so I will continue to monitor.

Jeff

• Marbles_Garage
• Replies: 13
• Forum: Used Oil Analysis - Gasoline

• 
• 

Jeff

Are you actually losing coolant? Thanks for the report, PUP has always been a really good oil even if SOPUS has neglected it…

 

[GTR_Hopeful]

Thanks for the update! My brother has the same engine (2.5L) in a 2018 Mazda 3 Touring Automatic with 57k miles. I'm following you on here. Another family member has a 2016 Mazda 3 2.0L Sport Automatic with 40k miles.

I've had to add the FL22 coolant to both cars. It looks like I need to get some samples sent in for the next oil changes.
Both cars are running Valvoline 0W20 Advanced with Mazda filters.

 

[Marbles_Garage]

Are you actually losing coolant? Thanks for the report, PUP has always been a really good oil even if SOPUS has neglected it…

Yes.

 

[Marbles_Garage]

UPDATE: The dealership put their best technicians (including the shop foreman) on the diagnosis...and no issues were found. I pick the car up this evening.

 

[Artem]

UPDATE: The dealership put their best technicians (including the shop foreman) on the diagnosis...and no issues were found. I pick the car up this evening.

As someone who works at an automotive repair shop… I sat here, thinking how I would go about TRYING to diagnose this issue had you came in showing the UOA report…. Apart from ripping apart the block to inspect, there’s literally nothing that can be done here.

Looking at the outside of the engine is pointless. The problem is internal.

 

[Marbles_Garage]

This report just confirms more of the trend of K (Potassium) & Na (Sodium) is increasing. It does point to a coolant leak. Not sure which testing method they use but Glycol is "Negative" which seems to be not enough to flag it. I'd ask the lab about that though. The wear numbers seem to be low which is good news.

The lab uses FTIR testing to determine coolant and water levels. A negative result means that levels are below 0.1% or 1,000 ppm.

 

[spasm3]

Where are you getting Tokyo Roki filters from ?

I purchased a case on eBay.

What are the advantages of the Tokyo Roki filters, over say a fram TG or ultra/endurance?

 

[EcoB00ST]

I have a 2014 that is on it's 2nd motor. Was babied like a proper Bitogger engine should be, throwing stellar UOA numbers. Blackstone made a note of a slight uptick in potassium sodium and during the very next OCI, engine gone due to blown head gasket. was purring like a kitten before this. Get a 2nd opinion.

 

[Urshurak776]

Can't they do a coolant pressure test of some sort?

 

[pbm]

When I owned my Buick with the 3.1 V6 I would get similar UOAs (signs of slight coolant intrusion). The 3.1 was known for having a poor intake manifold gasket design. I added a couple of Barsleaks tablets to the coolant which helped lower the potassium/sodium numbers in future UOAs. Something for the OP to consider.

PS: I once read (several years ago) that many car manufacturers add Barsleaks type products at the factory so I doubt there would be any harm in doing so.