Mazda Moly 0w-20 5.2k mi; 2016 Mazda CX-5 2.5L n/a 77k mi

[TiGeo]

That's good to know, I'd not considered the accuracy of their tests--yikes, so it could be much worse? Is there another value in the BlackStone test that I can use to verify that the oil isn't too diluted and still has its properties alongside the FP?

The first OCI was a lot more city/in-town driving and MUCH less longer freeway trips. The second and third OCI have the once-a-week mostly highway 70 mile trips, which I started taking the Mazda on instead of our other vehicle because I was worried about fuel dilution from the frequent short trips.

Just the viscosity cSt at 100 deg C and seeing if it drops below a 20...I don't think yours did. Flashpoint in the 300s like that with any fuel showing by their calc is likely more that they show. Really not a huge deal...a bazillion vehicles on the road with a little fuel in their oil. Going up a grade can help offset that drop in viscosity but with your driving use it probably makes exactly zero difference.

 

[Patrick0525]

C

It's interesting you say that. I absolutely do, but on this OCI it was the first time I got some first-start rattle and it startled me. It's never done that so it disappointed me. Maybe I didn't fill the oil filter with enough oil? I know the oil filter initially appears full, but then absorbs the oil and the level lowers, necessitating that I add more to bring the level up--I do that 2-3 times until it's thoroughly topped...maybe I didn't wait long enough to make sure it was really topped? It bothered me enough that I went hunting on the interwebs to see if there was a "flood mode" with the CX-5 to see if I could crank the motor over without firing it...all I could find kinda scared me, as I wasn't convinced I could remove my foot from the gas quick enough to not have it rev up: https://www.mazdaoflodi.com/blog/how-to-start-a-mazda-with-a-flooded-engine/

Wonder if that's the reason for the higher aluminum and iron? I know on the current OCI with the Toyko filter, I didn't get the dry fire valvetrain noise. Filled the filter like always, made triply sure that the oil filter soaked and kept absorbing oil until it was thoroughly topped, and then, not sure this did anything, but bumped the car over 6-7 times with the key. I'd release the brake after a revolution or two, but before it started. Did that 6-7 times, but not convinced that did anything.

Thanks for all the info, I appreciate it. That was going to be one of my next questions in here; what would be a good alternative (and hopefully and improvement) for our use case oil and weight that we could jump to for our CX-5?

Thanks for all the info, I appreciate it. That was going to be one of my next questions in here; what would be a good alternative (and hopefully and improvement) for our use case oil and weight that we could jump to for our CX-5?

Mainstream M1 5w-30 ESP @ 5k with filter change. This is definitely over kill since u live in SF.

Inclination for boutique: HPL.

Assuming cost is not an issue and there is no oil consumption, HPL every 10k and an oil filter every 5k with visual inspection until there is no carbon debris in the filter media. Requires buying a tool opens the spin on filter. Unless the car is brand new, most cars are not in an immaculate engine cleanliness condition and therefore require extensive pre-treatment (HPL 30EC, multiple 1K filter changes) before getting to the state for a HPL 10k oil change.

 

[kschachn]

That's good to know, I'd not considered the accuracy of their tests--yikes, so it could be much worse? Is there another value in the BlackStone test that I can use to verify that the oil isn't too diluted and still has its properties alongside the FP?

The first OCI was a lot more city/in-town driving and MUCH less longer freeway trips. The second and third OCI have the once-a-week mostly highway 70 mile trips, which I started taking the Mazda on instead of our other vehicle because I was worried about fuel dilution from the frequent short trips.

No there isn’t. They have issues measuring viscosity as well.

 

[TiGeo]

C





Mainstream M1 5w-30 ESP @ 5k with filter change. This is definitely over kill since u live in SF.

Inclination for boutique: HPL.

Assuming cost is not an issue and there is no oil consumption, HPL every 10k and an oil filter every 5k with visual inspection until there is no carbon debris in the filter media. Unless brand new most cars are not in an immaculate engine cleanliness condition and therefore require extensive pre-treatment (HPL 30EC, multiple 1K filter changes) before getting to the state for a HPL 10k oil change.

There is no reason for "immaculate engine cleanliness" to just run HPL for a normal interval on a single filter.

 

[Patrick0525]

There is no reason for "immaculate engine cleanliness" to just run HPL for a normal interval on a single filter.

U are correct but HPL will continue to free up carbonized debris. Since 2014, I have done 5K oil and 10k filter changes. All synthetic PU, PUP and 90% of the time Fram ultra filters. Port injected, V6 and 121k. Immaculate but filter debris visualization is warranted.

Forensics on the filter

 

[TiGeo]

U are correct but HPL will continue to free up carbonized debris. Since 2014, I have done 5K oil and 10k filter changes. All synthetic PU, PUP and 90% of the time Fram ultra filters. Port injected, V6 and 121k. Immaculate but filter debris visualization is warranted.

Forensics on the filter

I think it's over-stated here, a few bits in a few filters have been posted, nothing like completely clogged filters. It's fine. I have run HPL and EC in multiple vehicles and seen zero.

 

[Lilliston]

Thanks for the info, sorry, still learning all about this. Any chance you can elaborate on that? Are you referring to the varying levels measured in the UOAs? I just assumed it was because of the OCI and/or the durations the oil was in the sump, but I'd love to know more. The first UOA I believe might have been in the car for over a year because I think it was during the pandemic, but I need to check my notes--adding the caveat in case it's a data point that would help.
Thanks!

Mo and B went up dramatically. Mg dropped extremely low. They changed the formulation.

 

[bulwnkl]

U are correct but HPL will continue to free up carbonized debris. Since 2014, I have done 5K oil and 10k filter changes. All synthetic PU, PUP and 90% of the time Fram ultra filters. Port injected, V6 and 121k. Immaculate but filter debris visualization is warranted.

Forensics on the filter

I saw that, but what caught my attention most was wwilson's thread he linked inside yours. He missed the significance the parabolic increase in wear across the 4(?) UOAs he did with the same crankcase-load of oil, as well as of the carbon in the oil. Auto-RX doesn't cause what we all saw in his series when it cleans out carbon. I've done this testing with it, as did many back in the day when it was 'new' here.

 

[Patrick0525]

I saw that, but what caught my attention most was wwilson's thread he linked inside yours. He missed the significance the parabolic increase in wear across the 4(?) UOAs he did with the same crankcase-load of oil, as well as of the carbon in the oil. Auto-RX doesn't cause what we all saw in his series when it cleans out carbon. I've done this testing with it, as did many back in the day when it was 'new' here.

In wwilson’s use case, I think he went too far into the 15-20k range. I am doing a 10k max oil change and 5k filter change. I will be watching the Fe, Al, TBN and oxidation levels.

 

[Patrick0525]

@CX-5Alive
Here is a recent VOA (Aug 2024) baseline and the corresponding uoa with phenomenal ‘unicorn tear’ wear metal results. Fe 4 ppm at 8k. Can’t argue against a non-hybrid 2006 Honda 4cylinder with 280k mi and no added oil. 0.75 ppm/ 1K incredible.

Mobil 1 5w-30 FS Euro
API SP
$32 @Walmart

https://bobistheoilguy.com/forums/t...rd-2-4l-8-000-mi-oci-280-000-mi-total.388088/

 

[CX-5Alive]

It appears that the Mazda moly 0w-20 blend may have changed and injected uncertainty into ur uoa analysis. If the Fe and Al ppm did not change then it would be more certain that the blend remained constant and there is no need for a voa. BS uoa are expensive around $35 so on a cost benefit analysis u may want to consider trying another oil like Mobil 5w-30 ESP (Euro) and drop doing the voa. I live in the colder Northeast climate and have migrated to a 5w-30 which is good to -30F. plus has higher hths protection. ESP is posted in the voa bitog database.

Stop asking the wife to gently accelerate. She is not the cause of the higher ppm. Our 2009 ES 350 with 61K, gets an annual 4k oil change and a filter every other year(Fram endurance). Without a voa, Fe - 4ppm, Al - 1ppm, Cu - 1 ppm per 4k OCI. Bought used in 2017 at 41k with unknown oil history.

I told my wife about BITOG and that you told me to quit telling her to gently accelerate and she got a kick out of it. She told me I'm outnumbered now and she can do whatever she wants! Truthfully, it was always just a delicate request, but we laughed and rolled our eyes about by pickiness and laughed about your comment.

 

[Patrick0525]

@CX-5Alive Too funny. I am only rigorous where things matter but that doesn’t fully exonerate me as an easy person to live with. By nature I am a difficult person. When my wife garage parks, I ask her to connect the BatteryMinder to the battery and verify to disconnect every time she leaves the garage. 3M blue painter’s tape indicates/marks the connection. I tell her if u want the battery to be 100% healthy fully charged and guaranteed to start then follow the procedures. So far 7yrs and semi-annual verification using an Ancel BA101 conductance meter. I am not asking her to pop open the hood every time and connect to the battery terminals. I made her life real easy using a 12V SAE cable. Lol

Since I wanted the battery to be desulfated only when she is driving, I installed an on-board BatteryMinder that meets the requirement.

I can’t be blamed for not maintaining her car and leaving her stranded. Within in reason, I did deploy the latest technology risk mitigation techniques beyond the average driver would do. Lol



On board desulfator