PDA

View Full Version : Post Blackstone oil analysis results here!



ViperJon
09-07-2016, 06:25 AM
In the interest of keeping our results together for easier reference lets put them in here before they get too spread out in multiple threads.
Will be a lot easier to compare.

http://i.imgur.com/e0meXaY.jpg

Space Truckin
09-07-2016, 07:00 AM
Okie Dokie




19797

???
Better, but not great :(

jaxtk
09-07-2016, 07:36 AM
Okie Dokie

19794

Can't read, look at Viper Jon, that's what we need to see.

Topplayer
09-07-2016, 08:25 AM
Here are my results. 1700 mile or so (dealer oil change before I got the car). I changed the oil for a track day and also so I can start my own intervals. Felt good reading that description ha
http://i64.tinypic.com/smr6zn.png

ViperJon
09-07-2016, 10:33 AM
Here's Space Truckin's results.

http://i.imgur.com/sUCQMG0.jpg?2

Space Truckin
09-07-2016, 10:40 AM
Can't read, look at Viper Jon, that's what we need to see.

Viper Jon fixed it for me...:witless:

Vette2Viper
09-07-2016, 05:22 PM
Here's mine after 500 break in miles. A little concerned about the viscosity so I emailed Blackstone and here's what they said:

Two common causes of a thin viscosity are contamination from excess fuel, or normal engine shearing. We didn't find any fuel in your sample, so that wouldn't be the reason for the viscosity. Some engines just tend to thin the oil down while in use, and we may find your Viper to be one of them. The viscosity was only slightly below our expected range, and that in itself isn't something we consider harmful or problematic.

Just have to watch.

19806

FLATOUT
09-07-2016, 05:24 PM
Great thread!

Vette2Viper
09-07-2016, 05:28 PM
Damn size...I'll see what I can do to make it more legible

Space Truckin
09-07-2016, 06:08 PM
Damn size...I'll see what I can do to make it more legible

Viper Jon fixed mine, for the life of me I could not get it right....:witless:

ViperJon
09-09-2016, 11:19 AM
Here's a copy of Vette2Vipers oil analysis for easier reading:

http://i.imgur.com/BQ50GHe.jpg?1

Larryskillzs
09-10-2016, 11:15 PM
Oil change completed. Oil in bottle. Sending it out on Monday.

ek1
09-17-2016, 03:02 PM
Do you guys know how much oil is required for analysis? I forgot to get a sample during the last oil change and now I am trying to get oil drips out of my old oil filter. I got a few drops out. How much do they need?

ViperJon
09-17-2016, 03:20 PM
Do you guys know how much oil is required for analysis? I forgot to get a sample during the last oil change and now I am trying to get oil drips out of my old oil filter. I got a few drops out. How much do they need?

Might be best to give them a call about that as the container you fill (that they provide) is at least 3-4 ounces.

fuggles
09-17-2016, 03:28 PM
^ What Jon said. There is a video on their site explaining how to take a sample. In the video they said about 3oz. They also mentioned they could do some, not all analysis with less. I forget exactly. Check out the vid and/or contact them directly.

AdairII
10-05-2016, 08:51 PM
20343I am posting my Blackstone Oil Analysis - just received today and I am relieved with the good report. I had R28/R29 done in Apr with a good report back from Arrow....however, when I took the Viper in for my most recent oil change, the dealer called and said that R28 was showing as incomplete on the FCA recall site. We discussed, as me, the service manager and the viper tech (who is the only one to ever touch the car maintenance-wise) vividly remember that both 28/29 were done. Anyway, they kept the car about a week as they had to order the R28 kit - I had them pull a midstream oil sample for Blackstone when they did the service. The car has just over 4K miles - one owner with no mods, this is my 4th oil change for the record. I know the R28 two times is more than odd - and don't think anyone else has reported this. I am going to stop by the dealer tomorrow to see if the Arrow report...now the 2nd one is back.

Dman
10-05-2016, 10:03 PM
20343I am posting my Blackstone Oil Analysis - just received today and I am relieved with the good report. I had R28/R29 done in Apr with a good report back from Arrow....however, when I took the Viper in for my most recent oil change, the dealer called and said that R28 was showing as incomplete on the FCA recall site. We discussed, as me, the service manager and the viper tech (who is the only one to ever touch the car maintenance-wise) vividly remember that both 28/29 were done. Anyway, they kept the car about a week as they had to order the R28 kit - I had them pull a midstream oil sample for Blackstone when they did the service. The car has just over 4K miles - one owner with no mods, this is my 4th oil change for the record. I know the R28 two times is more than odd - and don't think anyone else has reported this. I am going to stop by the dealer tomorrow to see if the Arrow report...now the 2nd one is back.

It's very common for the R28 to show as not done when it has been. That's because the dealer had to go back in when the results come back and close it out with the results. Most dealers don't know this. They get the letter, tell the owner and that's it, and the R28 remains open. Your dealer just has to go in and close out your R28 as a 'passed'. If they dont know how, they can just call in to SRT and they'll talk them thru it.

swexlin
10-06-2016, 06:11 AM
It's very common for the R28 to show as not done when it has been. That's because the dealer had to go back in when the results come back and close it out with the results. Most dealers don't know this. They get the letter, tell the owner and that's it, and the R28 remains open. Your dealer just has to go in and close out your R28 as a 'passed'. If they dont know how, they can just call in to SRT and they'll talk them thru it.

Yes, mine shows as open when it was indeed done back in February. I'm actually going in next week for annual state inspection, and an oil change as well. I'm sure my service advisor will tell me it's open, even though I'm done. Thanks for the advice, I'll make sure to tell him to go in and close it with a "pass".

AdairII
10-06-2016, 02:36 PM
Good info to know -
I am waiting for the second R28 now - ha
I called SRT today (didn't see the previous post yet) and the person stated that possibly the paperwork was mixed up or the sample was not logged right....lots of "possible" reasons, never did she say that it requires the dealer to close out the recall...which makes the most sense. I had to point out a few other Recall website issues, like the FCA recall hotline # posted there is disconnected and that the hyperlinks for R28 and R29 no longer have the documents posted and that the description of the two recall campaigns say that R28 and R29 are both for position sensor nodes and nodules (at least on my VIN recall page) She was nice though.

swexlin
10-06-2016, 03:28 PM
Yes, I will actually take my R28 "pass" letter with me when I go in next week.

AdairII
10-06-2016, 05:37 PM
Dman is 100% correct - just left the dealer and they confirmed they should have went back in the system in March with the first "pass" and closed out the recall. So now I have 2 Arrow letters with a "pass" result and a Blackstone analysis with a glowing report! Done worrying about engine failure. It looks like Richard Winkles, Chief Engineer at Prefix-Arrow Racing Engine certified my 2nd test.

Dr.Ron
10-18-2016, 04:51 PM
Here is mine...Not sure how to make it any larger. Why is the Molybdenum so high yet they say no worries or issues? The car had 2 oil changes prior to this sample being submitted.
20587

Larryskillzs
10-18-2016, 04:55 PM
Mine was at 238. Blackstone didn't seem too worried about it.

esm_viper
10-18-2016, 05:16 PM
Here's mine. I've had 1 track day and 4 oil changes. The Arrow PCM has been installed since the beginning and I've never driven the car without it.

http://i72.photobucket.com/albums/i177/eric_mccloskey/016b768a-daf6-4c48-baa3-86d9ca2ce3e9_zpshjrfqybc.jpg

Terminator02
10-18-2016, 09:47 PM
Here's mine. I've had 1 track day and 4 oil changes. The Arrow PCM has been installed since the beginning and I've never driven the car without it.

http://i72.photobucket.com/albums/i177/eric_mccloskey/016b768a-daf6-4c48-baa3-86d9ca2ce3e9_zpshjrfqybc.jpg

Do you change your oil every 300 or was that just for the sample? My concern would be that if there was an issue 308 mile oil change intervals may not be sufficient time for it to show symptoms with your sample. I'm postulating here but some if the "failed negatives" from r28 may have been from relatively fresh oil. At least you have a baseline reading of fresh oil and can see how say 1500-2k miles looks on your second measure.

esm_viper
10-18-2016, 10:15 PM
It was just for the sample. It was changed for the recalls. Before that it was changed at 500 miles and then at 1,500 for a track day.

And I just wanted a baseline since I've had the Arrow unit from the start. Not planning on changing until 3k miles or the next track day.

To add to that.... if my car doesn't show signs of debris that has caused other cars to spin bearings, it should make the case better for the Arrow PCM not causing engine failure!

swexlin
10-19-2016, 06:24 AM
I remember back when the R28 was issues, basically, somewhere it was stated mileage on the oil shouldn't matter. If there were debris, it would show even on fresh oil. Maybe.....

But I agree, perhaps that's why a couple R28 passes have failed later.

sadil
10-19-2016, 11:34 AM
I agree. Not really time sensitive. If there is debris in the engine and it has found its way into a crevice or has stuck to something during casting, it may never free itself to cause an issue. On the other hand, it could be sitting waiting for the factory oil fill and start floating around immediately, ready to attack your bearings during your first drive. A little bit of wear-in debris is normal and should collect in the filter right away.

esm_viper
10-20-2016, 10:05 AM
Here's a reply from Blackstone on my short interval oil sample.....

Hi, Eric. Thanks for the email.

Yes, if there was a serious issue, we'd expect metals to be reading high,
even on a short oil run like this. Obviously, some metals will build up
more over time if you run longer on future oil change intervals, so we'll
have to see if the trends show wear metals holding steady even after longer
oil change intervals, but as for what we can see in this report, there's no
evidence of bearing wear or any other issues at this point. It looks great!

Hope that helps. Let me know if there's anything else we can do for you.
Thanks!

darrahc
12-16-2016, 09:02 PM
So, this is somewhat interesting...

High initial levels of metal after the first oil change at 1,834 miles on the factory fill for the initial break-in. Changed it to 15W50 for mostly track use and now that it's up for the winter, sent the sample to Blackstone. Overall, metals improved except for aluminum which actually increased. Not really sure what this portends but oil levels have been fine ever since delivery.

http://i552.photobucket.com/albums/jj337/darrahc_2009/Untitled_zps8vtrez1h.jpg (http://s552.photobucket.com/user/darrahc_2009/media/Untitled_zps8vtrez1h.jpg.html)

38D
12-19-2016, 08:36 PM
Just got mine. All break-in done by the book. Will be interested to see the next report at 1000miles!

http://i.imgur.com/wSiKXYn.jpg

ViperJon
01-06-2017, 05:01 AM
Here's my second Blackstone report. This was Pennzoil 0w-40 and had 725 miles on the oil. Car had 1700 on it. Now I went back to Mobil One for no particular reason. Everything looks normal apparently, no excess metals for what that's worth.

http://i.imgur.com/K4P8RbI.jpg

BJG32
01-12-2017, 11:24 AM
Second engine. This oil added at 2500 and changed at 3500

22288

swexlin
01-12-2017, 11:29 AM
Ben, seems like they were a little concerned (??) about the Al and Fe?

BJG32
01-12-2017, 11:42 AM
Ben, seems like they were a little concerned (??) about the Al and Fe?

Yeah, its pretty high I'll check again in 1000 miles.

ViperJon
01-13-2017, 06:58 AM
I wonder if anyone has ever received a really disturbing report from them, it seems like all the "comments" they provide are kind of generic.
Basically everybody looks within normal range and keep sending samples in lol.

donk_316
01-13-2017, 07:40 AM
Just read a fantastic thread on an unrelated forum suggesting that blackstone wasn't the best place to go for things like this.

Quoted from RZR forums - "Yep, don't guess. Use an ASTM certified lab as well. Don't use Blackstone, they aren't accurate with fuel dilution and aren't ASTM certified."

swexlin
01-13-2017, 07:42 AM
I was in the diesel truck scene for many years, and all my truck buddies swear by them. But it does indeed seem like they say, well, we saw cat pee in the oil, but this could be normal, let's just see next sample, LOL!

NT-ACR
01-13-2017, 08:33 AM
Just read a fantastic thread on an unrelated forum suggesting that blackstone wasn't the best place to go for things like this.

Quoted from RZR forums - "Yep, don't guess. Use an ASTM certified lab as well. Don't use Blackstone, they aren't accurate with fuel dilution and aren't ASTM certified."

Did they suggest any companies?

BJG32
01-13-2017, 09:13 AM
I still have the old oil. Id be curious to get a second opinion on the same sample.

City
01-13-2017, 09:49 AM
Here is mine...Not sure how to make it any larger. Why is the Molybdenum so high yet they say no worries or issues? The car had 2 oil changes prior to this sample being submitted.
20587

Guys, this is simple and we have a step by step "how to":
http://driveviper.com/forums/threads/3417-How-to-post-pictures-on-the-VOA-forums-Step-by-step-instructions!

Space Truckin
01-13-2017, 10:00 AM
Guys, this is simple and we have a step by step "how to":
http://driveviper.com/forums/threads/3417-How-to-post-pictures-on-the-VOA-forums-Step-by-step-instructions!

Perfect, I had to have Viper Jon post my results as I could not make results large enough to read....:iamwithstupid:

darrahc
01-13-2017, 10:28 AM
I wonder if anyone has ever received a really disturbing report from them, it seems like all the "comments" they provide are kind of generic.
Basically everybody looks within normal range and keep sending samples in lol.

My aluminum numbers were off the chart compared to the other reports that have been posted.

BJG32
01-13-2017, 10:49 AM
My aluminum numbers were off the chart compared to the other reports that have been posted.

Id be curious to see test results from an unhealthy engine beginning to fail so we can see through the happy sunshine analysis.

Vette2Viper
01-13-2017, 11:00 AM
Id be curious to see test results from an unhealthy engine beginning to fail so we can see through the happy sunshine analysis.

Agree.

After time as more people post their results the likelihood of seeing an engine failure goes up. Guess we won't know much until that time.

dewilmoth
02-08-2017, 04:47 PM
Here's my analysis. I estimated the the oil added during the time period at 2 qts, but some of it may have been before I standardized myself on how I read the stick. I'm also not entirely positive how much I actually added because I didn't log it. The engine definitely used more oil early on, but now the useage seems significantly reduced if not non-existent. Regardless, the report looks fine so far as I can tell.

ViperGeorge
03-15-2017, 04:51 PM
2017 Header Orange ACR/TA

23882

swexlin
03-15-2017, 06:10 PM
George, this was at the initial 500 mile change?

ViperGeorge
03-15-2017, 08:51 PM
George, this was at the initial 500 mile change?

Yes, the first oil change, exactly 500 miles on the clock.

Vette2Viper
03-21-2017, 10:52 AM
http://http://i1257.photobucket.com/albums/ii518/yelw06z51/IMG_2934.jpeg (http://s1257.photobucket.com/user/yelw06z51/media/IMG_2934.jpeg.html)

I had figured that the silicon would be high as I used a new syphon pump to draw the oil sample up through the dipstick tube. The pump's draw tube is made from a rubber/silicon material and drawing hot oil up through it probably didn't help. Also not sure what the pump was lubricated with from the factory but it had some type of light oil on it.

IndyRon
03-21-2017, 02:34 PM
Is the calcium so high on everyones samples due to the residual casting sand/contaminants left in the blocks? I guess what I'm asking is if you sent a Corvette or a GTR sample, would it read calcium in the 2,000-3,000 range also?

Vette2Viper
03-21-2017, 03:47 PM
Is the calcium so high on everyones samples due to the residual casting sand/contaminants left in the blocks? I guess what I'm asking is if you sent a Corvette or a GTR sample, would it read calcium in the 2,000-3,000 range also?

Some quick checks on the Corvette forum and I was able to pull some averages. Average for LS3 = 1882 current as of 2016, for LT4 = 1414 and that was based on a 2015 test.

Edit: http://www.pqiamerica.com/calcium.htm

ViperGeorge
05-01-2017, 05:54 PM
Latest oil analysis on my ACR/TA.

25261

ACRSNK
05-01-2017, 09:40 PM
Latest oil analysis on my ACR/TA.

25261

Very nice! Bet you were happy to get that report!

ViperGeorge
05-22-2017, 06:03 PM
Another report after running One Lap. Everything still looking good.
25679

sadil
06-06-2017, 10:03 AM
Here is my 2017 at 1100 kms

26190

ForTehNguyen
06-06-2017, 10:12 AM
reviewed this thread, not a lot of TBN checks at all. I would be curious to see what the TBN would be at the factory suggested 6k mile interval

Scott_in_fl
06-06-2017, 10:32 AM
George, can you tell us about your break-in procedure?

Also, any other oil changes other than shown in the report?

Which oil did you use at your changes (brand and weight)?

swexlin
06-06-2017, 11:06 AM
High amount of metal in oil? This is normal?

ForTehNguyen
06-06-2017, 03:40 PM
during break in yes

stradman
06-06-2017, 04:42 PM
Well I got my second analysis back. First was at 800 miles and second at 2700 miles. Overall good results with low metals everywhere and no dilution etc. Only slight thing to look at is that the Aluminum gone up a bit from 12 last and first time to 19 but all other metals are very low. So I'll keep an eye on that what else can I do. Oh and btw I don't use Blackstone over here in the UK so don't know if there are any differences in the spectroscopy machine they use. Who knows..

ViperGeorge
06-06-2017, 04:44 PM
George, can you tell us about your break-in procedure?

Also, any other oil changes other than shown in the report?

Which oil did you use at your changes (brand and weight)?

I used Castrol Ultra for the first oil change at 500 miles then Mobil 1 15/50 after that. For break in I drove 500 miles trying to vary the RPMs and speed. I then drove an additional 1000 miles at varying speeds. Exactly at 1500 miles I hit the track.

Scott_in_fl
06-06-2017, 04:57 PM
Did you keep speeds under a certain MPH during the first 500? During the next 1,000?

SSGNRDZ_28
07-21-2017, 08:44 PM
Here are my results at 500 miles. Break in procedure followed very closely.

27258

Fastbusy
07-22-2017, 07:43 AM
Results at 800 kms.

27265

SRT_BluByU
07-22-2017, 05:20 PM
Has anyone ever viewed a bad report? The ones I've read always have a positive spin in them...

swexlin
07-22-2017, 06:19 PM
Has anyone ever viewed a bad report? The ones I've read always have a positive spin in them...

I've always thought the same - even if there are "bad" numbers, they seem to spin positive.

SRT_BluByU
07-22-2017, 08:40 PM
Dear mr smith, the alum and copper content in your test was off the scale. We predict imminent pending failure. However, the good news is that Viper of yours is one sexy beast and would make a fine lawn orinament. Keep your current routine up and send us another sample to monitor the situation.

txA&M08
10-20-2017, 11:40 AM
29259

ForTehNguyen
10-20-2017, 02:32 PM
you have to have some big deviations from average to be flagged for bad, like this guy

http://www.m3forum.net/m3forum/showthread.php?t=431559

https://thegarage.jalopnik.com/how-a-28-laboratory-test-may-have-just-saved-my-engine-1795355769

Vette2Viper
10-20-2017, 10:02 PM
Newest sample below. 993 miles on oil.

29275

dewilmoth
11-25-2017, 11:07 AM
Got my 2nd report back.

29788

uberpube
07-31-2018, 10:56 PM
So I did the break in strictly to the manual, I'm concerned about the copper and iron, have to see if it comes down next change.
33683

sadil
07-31-2018, 11:09 PM
So I did the break in strictly to the manual, I'm concerned about the copper and iron, have to see if it comes down next change.

I received a concerning oil analysis result from Black Stone after 7000 miles. Iron and Aluminum were way up. I had already driven the car another 1500 miles which includes a few track days. I changed the oil soon after and re-sampled using the machines at work. Sample came out clean. Even the filter was spotless after I cut it open. I thought I was headed to an engine failure but looks like I am okay right now. 9000 miles on the car now. Will add my personal testing results tomorrow.

33682

ForTehNguyen
03-18-2019, 06:31 PM
Just got mine in and looks great. It's passed R28/R29 so has the 10 year powertrain, and burns about 1qt/2000mi. This oil change was Castrol Edge 5W-40 and had an HDPE weekend too. Current oil change is M1 15W-50

37202

uvbnbit
01-14-2020, 06:44 AM
Sending mine off today.
2017 GTS. now at 3300 miles. Oil was filled with full synthetic Liquimoly Molygen 5w-50 and a K&N filter when we purchased with 1300 miles (by Zen Racing, Atlanta..if you're on FB you may be familiar with that ordeal) . It was way darker than expected for only 2000 miles, but it now has Mobil 1 0w-40 and the OEM Mopar oil filter.
I'll update as results come in.

txA&M08
01-14-2020, 10:23 AM
Here's a test with more intervals and more mileage. The downward trend in wear metals is comforting, and probably the norm for these engines once they get some mileage in them.

Notes: my car got a new engine at 14,000 miles and I failed to test the first oil change at 15,000 miles. I have used M1 15w50 since the beginning of my ownership. The car consumed about a quart per change until recently it seems to have mostly sealed up after 10,000 miles on the engine. I do 1-3 HPDEs per year. Typically burn a half quart per HPDE weekend.

41615

pony23
01-18-2020, 06:34 AM
Here is my test that I just got back from Blackstone for my 13. Car is still has original motor and passed all recalls done.

41673

uvbnbit
01-23-2020, 06:48 PM
Sending mine off today.
2017 GTS. now at 3300 miles. Oil was filled with full synthetic Liquimoly Molygen 5w-50 and a K&N filter when we purchased with 1300 miles (by Zen Racing, Atlanta..if you're on FB you may be familiar with that ordeal) . It was way darker than expected for only 2000 miles, but it now has Mobil 1 0w-40 and the OEM Mopar oil filter.
I'll update as results come in.

Got mine today..

41718

txA&M08
01-24-2020, 05:41 PM
Got mine today..

That's super clean for a newish engine on only its second oil change

uvbnbit
01-25-2020, 07:46 AM
That's super clean for a newish engine on only its second oil change

I was relieved to see that. Got me to looking at the numbers that were lower than the "universal" averages too.
My concern was how dark the oil was, but from what I read, it's just the oil doing it's purpose, cleaning, etc.
Was there a link or list in here (I couldn't find) that has all the explanations of each element, mineral, additives etc all in one place?

Cheme1985
01-25-2020, 08:52 AM
This thread is interesting. Do any of the results mention what lab testing methodology they use for the various elements? I’m also assuming that the reporting is on a weight basis?

Gen5snake
01-26-2020, 01:57 PM
My two....

4173741738

uvbnbit
01-26-2020, 01:59 PM
This thread is interesting. Do any of the results mention what lab testing methodology they use for the various elements? I’m also assuming that the reporting is on a weight basis?

go to Blackstone Labs website and read the FAQ to see if that answer your question.

Cheme1985
01-26-2020, 04:58 PM
It was not in the faqs, but they listed the ASTM standards they use elsewhere on the site. It was more just a professional curiosity. Thanks.


go to Blackstone Labs website and read the FAQ to see if that answer your question.

uvbnbit
01-27-2020, 06:44 AM
It was not in the faqs, but they listed the ASTM standards they use elsewhere on the site. It was more just a professional curiosity. Thanks.

Cool. I was curious as well. I found some good info search "oil analysis". We also have or had a couple petroleum engineers on here, 'TomFLGoR' for one, not sure if he still around. You might try messaging him?

Cheme1985
01-27-2020, 07:04 AM
I might try to look him up when I get time. I'm a chemical engineer (brother is a petroleum engineer) and previously worked for a large company at a refinery that manufactures motor oils among many other petroleum products/fuels. Motor oil wasn't my area of expertise (High octane fuel was), but my hobbies led me to be more curious than your average bear I suppose about the motor oil.


Cool. I was curious as well. I found some good info search "oil analysis". We also have or had a couple petroleum engineers on here, 'TomFLGoR' for one, not sure if he still around. You might try messaging him?

uvbnbit
01-28-2020, 05:34 AM
I might try to look him up when I get time. I'm a chemical engineer (brother is a petroleum engineer) and previously worked for a large company at a refinery that manufactures motor oils among many other petroleum products/fuels. Motor oil wasn't my area of expertise (High octane fuel was), but my hobbies led me to be more curious than your average bear I suppose about the motor oil.

I'm sure others would love to have a little more understanding to their analysis'. Post anything pertaining you may find. That's awesome

threatta
02-10-2020, 09:37 AM
Here is the result for my 2016 ACR-E.

41904

ForTehNguyen
06-15-2020, 07:07 PM
44117

threatta
01-29-2021, 08:06 AM
Latest update on my ACR-E. Had a little bit of track time on this one as well.

46709

Turla
04-22-2021, 11:06 AM
Here are my blackstone reports. Engine, trans and diff. Had the car about 4 months at the time and did the analysis after a few track days. Given neither the trans not diff were due to schedule fluid changes at the time of analysis, some of the higher levels make sense. Very happy to see there are no real issues at this time.475894758747588

uvbnbit
05-27-2022, 05:40 AM
IF we're still posting results here. This is our 2nd sample...

51610