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07-11-2018, 08:06 AM | #947 | |
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07-16-2018, 06:11 PM | #948 |
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LM Synthoil Race Tech GT1 10W-60 VOA
I was curious about the final viscosity of this oil versus the others given the too thick discussions.
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07-16-2018, 07:48 PM | #949 | |
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Looks to be right in the middle for a 10w60 -- most are 23-25 cSt. TWS is 22.7 and the BMW (Shell) stuff is 23.2, for example. Starting TBN looks typical too. I'm sure it will be fine.
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07-17-2018, 12:11 AM | #950 | |
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Would also be interesting to know more about what’s driving the high TAN. |
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07-17-2018, 09:26 AM | #951 | |
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Manufacturer data sheets are showing the typical values for that oil. There will always be manufacturing variances and we don't know what those are. Blackstone's own testing has a margin of error, too. I don't think that starting TAN is very high. I have seen plenty of VOAs come back with TAN of 4-5. Certain basestock types can cause elevation of TAN, if I remember correctly.
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07-17-2018, 04:38 PM | #952 |
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While that is true, I think we are confusing material versus immaterial deviations. Approaching 10% is typically seen as material from my experience and we'd flag it, though I can't say for certain what the SAE or ASTM standards are.
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07-18-2018, 12:27 PM | #953 | |
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I agree that 10% is substantial. That's enough to push an oil out of grade, in some instances. It could also just be a perfect storm of variances: 5% on the blending side PLUS 5% on Blackstone's side. That seems unlikely but I wouldn't call it impossible. Years ago, I had a VOA done for Eneos Sustina 0w50 and it came back WAY out of grade -- also about 10%. I was quite surprised by this and contacted Eneos directly. They replied back and said they'd look into it, but multiple follow-up emails went into a black hole and I never heard back.
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08-06-2018, 04:17 PM | #954 |
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New report.
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'10 LB E90 slicktop/speed cloth/6MT ex. '06 330i 6MT & '10 n54 6MT Msport Autocross vids https://www.youtube.com/user/tigermack https://www.instagram.com/tigermack Last edited by tigermack; 08-06-2018 at 04:47 PM.. |
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08-06-2018, 04:44 PM | #955 |
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Aluminum up slightly, iron about the same, copper unchanged, lead down slightly = not too bad overall. Consistency is what we want, like Blackstone said. Viscosity still in grade, flashpoint okay, and no contaminants.
The TBN and TAN are equal which isn't really ideal, but I agree you should try a slightly longer interval and see if that causes TAN > TBN. Do you do a lot of short trips? What's your driving style? I would consider this a good report and the start of a reassuring trend. The next report should be very telling.
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08-06-2018, 07:46 PM | #956 | |
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08-07-2018, 11:06 AM | #957 | |
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Just wanted to make sure this wasn't a car you drove 5 minutes to the train station every day, as that would cause the acid build-up (high TAN). Why are you changing the rod bearings? Preventative maintenance?
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08-07-2018, 11:11 AM | #958 | ||
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08-17-2018, 12:54 PM | #960 |
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Liqui Moly with two track days. Short interval because I can't math. |
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08-17-2018, 12:59 PM | #961 |
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Looks pretty good -- no major deviations from your previous reports.
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08-30-2018, 05:12 AM | #962 |
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Strange results on 32km
Just received my BlackStone report for "08 38km showing increased Lead and Copper however comments are positive.
Is there something to worry about? |
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11-07-2018, 11:39 AM | #964 | |
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I would also pay for TAN next time.
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11-12-2018, 10:29 AM | #965 | |
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11-18-2018, 07:21 PM | #966 | |
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Levels are high in general - mine were high before the bearing spun, but before I could get another 5k and trend. Good luck! |
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11-19-2018, 03:21 PM | #967 | |
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1st reading was car when first received, OCI was calculated from last oil change from previous owner. Higher lead content. 2nd reading was when the car acted strange, with a ticking noise rhymic running up in RPM, with slight ratchet feel in the shifter. Took oil reading and it read high. Turns out bearing spun. 3rd reading was with replacement engine (miles on engine, future readings back to vehicle mileage) - replaced bearings prior to install with VAC / ARP Car went thru two winters in Michigan being parked outside daily overnight (sub zero temps often) - daily driven year round. Crazy that there's still zero lead readings pretty much to date. |
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11-25-2018, 04:43 PM | #968 |
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Hi folks, I recently bought a 2010 E92 and did the oil analysis and waited with all my fingers and toes crossed.
Good news is that it came back with low copper and lead readings. Though iron levels came back quite high compared to what I'm seeing on everyone's reports here (43mg/kg - not quite the same as ppm, but close enough). My local lab (New Zealand) didn't think it was a problem, but thought I'd post my report numbers up here to add to the group data and see if anyone had thoughts on the iron. Car has done 63k Miles, not 100% sure on mileage since last oil change, but I think it was done in April this year, I tested on 19 Nov so I estimate about 3000 miles. Oil was Eneos, unsure of the grade. Report numbers in mg/kg: Cu - 4 Fe - 43 Pb - 1 Cr - 1 Al - 1 Si - 2 Mo - 45 Ni - 1 K - 1 Additives: Mg - 726 Zn - 1056 Ca - 1216 P - 847 Cheers guys. |
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