Mazda 2.0l M1 EP 0w20 - 19k miles
- Thread starter buster
- Start date
That’s fantastic. And good for you to push it.
The report is junk. I'd ask them to rerun it on a recently calibrated ICP. The phosphorus is well outside of API limits and well outside any margin of error with ICP so either Mobil 1 is lying with their API starburst (highly unlikely) or Blackstone's machines aren't calibrated right which is the far more likely scenario as we've seen time and time again from Blackstone. The wear metals don't show an increase because they're likely 20-30% under reported.
Went 19k miles and didn't get TBN? Why not just use Polaris? It's cheaper and you get TBN and oxidation numbers, the two biggest factors in determining service life. It blows my mind how anybody can look at available oil analysis facilities, what they offer and their prices, and choose Blackstone.
There's 1.5% fuel dilution with the KV100 dropped down into more of a 0W-16 range. I'd say it's well past spent but Blackstone says "Try 21,000 miles next time."
Went 19k miles and didn't get TBN? Why not just use Polaris? It's cheaper and you get TBN and oxidation numbers, the two biggest factors in determining service life. It blows my mind how anybody can look at available oil analysis facilities, what they offer and their prices, and choose Blackstone.
There's 1.5% fuel dilution with the KV100 dropped down into more of a 0W-16 range. I'd say it's well past spent but Blackstone says "Try 21,000 miles next time."
Wow, not bad at all. That engine must be pretty easy on oil.
Is this SN or SP version of Mobil 1 EP 0w20 ?
I've noticed this too. Not my favorite lab that's for sure.The report is junk. I'd ask them to rerun it on a recently calibrated ICP. The phosphorus is well outside of API limits and well outside any margin of error with ICP so either Mobil 1 is lying with their API starburst (highly unlikely) or Blackstone's machines aren't calibrated right which is the far more likely scenario as we've seen time and time again from Blackstone. The wear metals don't show an increase because they're likely 20-30% under reported.
Went 19k miles and didn't get TBN? Why not just use Polaris? It's cheaper and you get TBN and oxidation numbers, the two biggest factors in determining service life. It blows my mind how anybody can look at available oil analysis facilities, what they offer and their prices, and choose Blackstone.
There's 1.5% fuel dilution with the KV100 dropped down into more of a 0W-16 range. I'd say it's well past spent but Blackstone says "Try 21,000 miles next time."
Still, I commend you for the long oci. Too many guys not pushing oci limits at all but want to post their run of the mill reports. No makeup oil either to me is just an added bonus, makes the report less skewed. Thank you.
Wow, I don’t know if I can have the patience to go that long… unless there’s a bunch of long distance highway cruising in there.
The oil does look beaten up and the fuel dilution isn’t helping much or that’s just due to sampling “technique”
The oil does look beaten up and the fuel dilution isn’t helping much or that’s just due to sampling “technique”
Didn't we go through this before and it was determined that multiple labs were reporting the low Ph? Mobil 1 analyzed their own 0W20 and got lower Ph results than Blackstone did on the same sample. I thought you were part of that discussion.
Those reports were within an ICP's margin of error. This one is not. Hence, I'd want a rerun. I don't see an under reported additive as something to brush off. Something is not right, and I personally would deem it a junk report until it's looked into further.
Finally someone not over changing their oil.
dnewton3
Staff member
Unless things have changed since I was there (which admittedly was a while ago), when they run samples, every 9th sample is a known oil, so that they can "check" the calibration. Essentially they run 8 customer samples, and then they run a known sample as a control to see if the numbers come into expected range. I don't think they "calibrate" the machine; that's done by some accreddited tech service. But they "check" the calibration by running known samples at specific intervals. This is a VERY COMMON practice in many industries. You run a "control" sample (aka "check sample") at set intervals to assure calibration isn't wandering. Then if it's suspected out of calibration, you call someone to fix it.
Regarding this UOA, I'd ask BS to rerun the tests and confirm or deny the previous results. They typically will hold back a portion of the sample for this very purpose. Not sure how long they hold on to the customer samples after initial tests are run; they can't hold stuff forever.
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Here's the video:
You can skip to ~9:30 if you want. Mobil 1's VOA of their 0W20 had a Phosphorus result of 580. Blackstone's result was 660. My VOA from Blackstone on the same oil showed 449 (08/22/21). Another Blackstone VOA (mine as well) of the 0W20 HM showed Ph of 462 (10/12/21). The OP's result is 496 (09/27/21).
Even the 580 result is over 11% low, which I consider beyond margin of error. And three different VOAs taken at different times show results between 450-500. Factor that in with dnewton3's comments and I think there is a combination of slight variation of the actual oil from Mobil 1's specs, as well as some slight variation in lab results. But it sure looks like Mobil 1's oil is actually varying from their Ph 650 spec:
https://www.mobil.com/lubricants/-/...iles/FAQs/mobil-1-oil-product-specs-guide.pdf
Here's some more Ph values from UOAs:
578: https://bobistheoilguy.com/forums/t...adiator-3-6l-9-620-miles.350258/#post-6000178
601: https://bobistheoilguy.com/forums/threads/21-subaru-ascent-m1-ep-0w20.348912/
571: https://bobistheoilguy.com/forums/t...20-10-594mi-2010-fj-cruiser-103-444mi.296116/
edyvw
$50 site donor 2025
Idk how anyone can say that this report is good? People, again, UOA is not about wear. It is irrelevant. There are two UOA, wear is same, fine. Nothing to see.
But no one can say whether this is good UOA without TBN and TAN. Only thing here we can see is drop in flash point and fuel dilution.
IMO waste of money without TBN and TAN.
But no one can say whether this is good UOA without TBN and TAN. Only thing here we can see is drop in flash point and fuel dilution.
IMO waste of money without TBN and TAN.
