Another oil analysis
#556
Three Wheelin'
My car came with the bog standard Mobil 1 0W-40. I sent it in to Blackstone when I did an oil change, but switched to LiquiMoly 5W-40. Reading through the threads here, I may just switch to Driven DT-40 - if I do, is there any point in sending the old LiquiMoly I drain out for analysis? Seems not helpful to use a different oil.
https://rennlist.com/forums/997-foru...xperience.html
https://rennlist.com/forums/997-foru...-or-two-3.html
#557
Advanced
How many miles ago did you switch to Liquimoly? You can add another UOA data point or add Ceratec. If you do switch to DT-40, run the BR30 for a hundred miles first.
https://rennlist.com/forums/997-foru...xperience.html
https://rennlist.com/forums/997-foru...-or-two-3.html
https://rennlist.com/forums/997-foru...xperience.html
https://rennlist.com/forums/997-foru...-or-two-3.html
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DesmoSD (06-26-2023)
#559
Here is my latest UOA with hopefully my previous reports shown below. And here are all the protective measures I've been taking to try and ward off some streaked cylinders from advancing further. Feedback on my measures taken and on the analysis are welcome!
- Based on Petza's previous advice for my scenario, I am running Driven FR50 oil.
- I also have the L&N LTT installed and the spin-on oil filter adapter to run the Napa 1042 filters.
- I am trying to keep my OCI to no more than 3k miles or 1 year. This particular change was 2500 miles and 8 months.
- I fill up with Shell 93 V-Power NiTRO pretty much all the time. Occasionally I add Driven Injector Defender into the empty tank at fill-up.
- Finally, I have been logging oil consumption for some time now, looking for any change in the consumption rate. If anything, it has gone down slightly in the last several months - at my last addition it was averaging over 1300 miles per 1L. I realize people's healthy and unhealthy engines consume oil at vastly different rates so I'm not really looking into the number itself, just any increase in consumption rate.
This is only my second UOA. I decided to try out SPEEDiagnostix, so since there's no history I'm cross-posting my first UOA. The consumption is pretty low I think (I was nearing having to add my first quart at 1200+ miles). The numbers look pretty good to me, but then again I'm not putting on a ton of miles as I'm not driving as much as I imagined I'd be. Closing in on my first year of ownership of my first Porsche.
The SPEEDiagnostix analysis was on Driven DT40. The Blackstone one I don't actually know since I didn't have that oil put in. I am assuming the previous owner (or dealership) just put in the Porsche recommended Mobile 1. I am now driving it with Driven FR50.
The SPEEDiagnostix analysis was on Driven DT40. The Blackstone one I don't actually know since I didn't have that oil put in. I am assuming the previous owner (or dealership) just put in the Porsche recommended Mobile 1. I am now driving it with Driven FR50.
#560
RL Community Team
Rennlist Member
Rennlist Member
Here is my latest UOA with hopefully my previous reports shown below. And here are all the protective measures I've been taking to try and ward off some streaked cylinders from advancing further. Feedback on my measures taken and on the analysis are welcome!
- Based on Petza's previous advice for my scenario, I am running Driven FR50 oil.
- I also have the L&N LTT installed and the spin-on oil filter adapter to run the Napa 1042 filters.
- I am trying to keep my OCI to no more than 3k miles or 1 year. This particular change was 2500 miles and 8 months.
- I fill up with Shell 93 V-Power NiTRO pretty much all the time. Occasionally I add Driven Injector Defender into the empty tank at fill-up.
- Finally, I have been logging oil consumption for some time now, looking for any change in the consumption rate. If anything, it has gone down slightly in the last several months - at my last addition it was averaging over 1300 miles per 1L. I realize people's healthy and unhealthy engines consume oil at vastly different rates so I'm not really looking into the number itself, just any increase in consumption rate.
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onnastick (07-18-2023)
#561
Instructor
July 2023 BlackStone Report - nothing to see here, right?
Was stressing for more than a few months given this was a dealership purchase, but looks like a clean report for my 997. Will plan to run this report annually.
Last edited by aasilvia; 07-25-2023 at 07:11 PM.
#562
RL Community Team
Rennlist Member
Rennlist Member
Copper and Iron are a little high for only 3,000 miles and at 5k would be high single digits if not low double digits. Viscosity is low too so the viscosity modifiers are shearing down the oil to a lesser grade and why the bearing wear is a bit high (iron, copper, and lead).
Aluminum is good though, which is the scoring indicator.
#563
Instructor
Thanks - As I'm not the original owner, I know the 1 owner that did have this 997.1 only ran 0w-40. My first oil change since submitting this oil for analysis, I stuck with the 0w-40 but I think given the viscosity issue, I will switch to 5w (A40 approved) going forward. Plus, I am running MoS2 now as well. The report shows 16 for moly readings, but I'm not sure if the previous owner used that stuff or not.
I'm also in a warmer climate area anyway.
I'm also in a warmer climate area anyway.
Last edited by aasilvia; 07-26-2023 at 02:30 PM.
#564
Note that the 10.96 cSt measurement in your report is the viscosity @ 100 C. This is your "hot" viscosity and is effectively a 30 weight, which is not good (good for your fuel economy not good otherwise). Switching from 0W-40 to 5W-40 will do nothing to help this because 0W/5W is only the cold viscosity. Some brands like Driven DI 40 only come in a 0W-40 instead of a 5W-40, this is nothing to worry about.
#565
RL Community Team
Rennlist Member
Rennlist Member
Thanks - As I'm not the original owner, I know the 1 owner that did have this 997.1 only ran 0w-40. My first oil change since submitting this oil for analysis, I stuck with the 0w-40 but I think given the viscosity issue, I will switch to 5w (A40 approved) going forward.
I'm also in a warmer climate area anyway.
I'm also in a warmer climate area anyway.
#566
Posted this once to my original thread about changing from Motul to Driven. But thought I would post here to get better feedback. This is my first UOA since switching to Driven 5w-50 on advice from LN and Petza. Looks good to me. Car is a 2006 C2S with 98k miles.
#567
Weird your fuel dilution measure only says "Negative" instead of the actual % ?? That is really weird. I was wondering if Speediagnostix changed that recently but I see it that way for your 5/14/19 test too. My reports from them always have it in % to the .01 precision, not a binary measure. Knowing the actual % is better probably for obvious reasons so I don't know if that is a mistake or why they would change that..
Petza/LN gave you good advice, both very knowledgeable, your results look good for a first OCI. You can see the higher viscosity in your 16.0 cSt reading even after almost 6K miles. The wear will probably continue to slightly improve in subsequent OCIs.
Petza/LN gave you good advice, both very knowledgeable, your results look good for a first OCI. You can see the higher viscosity in your 16.0 cSt reading even after almost 6K miles. The wear will probably continue to slightly improve in subsequent OCIs.
Last edited by silver_tt; 07-30-2023 at 09:07 PM.
#569
Two questions if possible - why dt40 over liquimoly? I just switched to liquimoly high tech 5w40 from a mobile 0w40 about a thousand miles ago.
Second - I've seen an excel file floating around for tracking UOAs, does anyone happen to have that?
Second - I've seen an excel file floating around for tracking UOAs, does anyone happen to have that?
#570
RL Community Team
Rennlist Member
Rennlist Member
@wjk_glynn is who started this and has been posting the updates so maybe he'll throw a new version in here for us.
From the UOA reports I've seen nothing works as well as the Driven oils in these motors (DT40 or FR50 for the 997.1s depending on climate, mileage, and mods) and DI40 for the 997.2s.
If using LM, the only good reports I've seen are from the green bottle or jug one, whichever that is. The other LM oils seem to have quite a bit more bearing wear (iron & copper) than the Driven oils do.
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