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07-06-2013, 12:15 PM | #89 |
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Hi Blankstar. I'm afraid I can't be of much help re problems with the car itself - - have to leave that to the dealer and their diagnostics. BUT, you've only had this one uoa that MAYBE shows high fuel dilution. I would just try to keep an eye on it with the next couple of uoa's - - try to get a handle on what's normal for your car.
I'm too new to the S65 engine to know whether or not fuel dilution is usually present to any degree - - and part of that is due to using Blackstone for many, many years on other past M BMWs. The way the sample is drawn can definitely affect the resulting report. If the car has been jockeyed around by the dealer with a lot of idling just prior to drawing the sample from luke warm oil, it would I expect show more than normal fuel dilution. FWIW I did a uoa on the first 1200 mi "break-in" drain (done at the dealer) and the uoa showed 1.5% fuel dilution. That's a lot for just 1200 mi., but I bought the M3 from dealer stock with about 50 mi on the clock (lots of short test drives?). Maybe high fuel dilution is normal in the M3. The fuel itself in the oil does no damage. It's what it does to the oil that has to be watched. Your uoa still looked ok to me in that regard. I was told some interesting things by a lubricant engineer who worked for Castrol and had direct experience with TWS. He said the Castrol-supported Audi and VW teams at the 24 hr Nurburgring race used TWS 10w60 even though their normal service fills were 5w40. They did it to counter the expected fuel dilution over the course of the long distance race. I think BMW expects fuel dilution over the course of extended drains on M engines and maybe that's why they spec 10w60. The lube engineer also said that some fuel dilution is good. It counters the effects of oxidative thickening of the oil over an extended drain. Hope this helps. Sometimes I think doing uoa's is counterproductive. People get too wound up over one report when copper is high, or iron spikes a few ppm, or 3 or 4 ppm lead shows up. Sometimes ignorance is bliss.
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08-06-2013, 02:48 PM | #90 |
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Can somebody put my mind at ease please
Just got my 1st report back & my lead was 32! My car is a 2010 with 40k miles(at time of sample) on it. I had ~10500 miles on the oil & 12 months. I got SC'd at 38k miles. He said unless leaded fuel or an octane booster was used, it shows bearing wear. Well, I did use Torco race fuel concentrate twice around sample time. Would that do anything for lead amounts?? Thoughts?? |
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08-06-2013, 06:30 PM | #91 |
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I'm pretty sure Torco race fuel concentrate is unleaded. I used Lucas octane booster pretty every other tank fill during my 3000mi M1 0W40 OCI, and I had zero lead when I got my report back from Blackstone.
I'd do a shorter run of your oil (~5000mi or so) and monitor that rod bearing lead wear. Last edited by Leonardo629; 08-06-2013 at 06:37 PM.. |
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08-08-2013, 08:33 AM | #92 | |
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08-10-2013, 03:31 PM | #93 | |
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20 ppm lead is the upper limit most labs and oem's use, even for oem's extended drain intervals. Your uoa was way past that. I would be a bit concerned. You can rely on the advice of us amateurs (speaking of myself in particular), or you can consult with a professional like Terry Dyson: http://www.dysonanalysis.com/Dyson_A...s/Welcome.html. Many people who have used his services speak highly of him: http://www.bobistheoilguy.com/forums...Number=2153901. It might be cheaper in the long run than a possible bottom end rebuild.
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08-10-2013, 04:20 PM | #94 | ||
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08-10-2013, 06:46 PM | #95 | |
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You might also consider going to an ester base oil like Redline or Motul 300V. Ordinarily the 10w60 TWS is more than adequate for a stock M3 engine, even at extended drain intervals. But the SC may add much more heat and probably more fuel dilution (blow-by past the rings) - - thinning factors that can negatively affect that all-important oil film. Ester base stocks are very resistant to high heat and fuel dilution. Radiation Joe knows about Redline. I'm more familiar with Motul 300V oils (their 10w40 would probably be right for your M3) and they advertise 100% ester base stock with zero shearback (thinning). These "racing"oils do have their downside: more expensive; hard to get; probably shorten the life of your cat converters; and short drain intervals. Don't know about Redline, but you will have to go to shortened drain intervals with the Motul 300V since it is a racing oil formulated with less detergent/dispersants. But they say it can be run on the street. Motul says to consult with your tuner for advice on appropriate drain interval (good luck!). Terry Dyson touts a relatively new ester oil made by Renewable Lubricants Inc. The renewable part comes from the fact the esters are vegetable esters - - very high performance. Castor oil (the original ingredient in Castrol R racing oil) is a vegetable ester. Hope this doesn't sound too preachy. You may know all this already.
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08-11-2013, 11:11 AM | #96 |
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That's a lot more phosphorus (1619) and zinc (1760) than most used Castrol 10w60 analyses out there. Also it seems that about half the samples have <50ppm of moly while others have >150ppm...?
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08-12-2013, 12:54 PM | #97 | |
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08-13-2013, 05:15 PM | #98 |
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I got my blackstone-labs report. All looks good - No LEAD!
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08-19-2013, 08:58 AM | #99 |
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Another Blackstone Laboratories Oil Analysis. She's clean!
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08-19-2013, 09:58 AM | #100 |
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Flipm3: Great report. The oil was in great condition. The moly, boron, and titanium are all antiwear adds that supplement the zddp. Titanium is supposed to be great stuff - - forms a very hard and durable antiwear film on metal parts.
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08-19-2013, 11:06 AM | #101 |
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Thanks buddy! I also got a clean report from my E46 M3. My rod bearings seem to be happy
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08-19-2013, 11:19 AM | #102 |
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Getting my second one done this weekend. Then switching the Mobil1 0W-40. Here goes nothing
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08-19-2013, 12:32 PM | #103 |
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Just goes to show once again that they have changed the formulation of the TWS once again. They dropped the zinc and phosphorus down but added titanium. The 0-40 has more of both than the tws contains.
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08-19-2013, 06:08 PM | #104 | |
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Was there a voa of TWS in between that showed higher P? I think the Mobil 0w40 is a great oil. Is there a link to a recent voa of the 0w40?
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08-19-2013, 10:20 PM | #105 | |
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08-19-2013, 11:15 PM | #106 | |
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Back to Mobil 0w40: the buzz on BITOG is that it has recently been reformulated, as well, and is now a better oil - - it used to shear back rather quickly.
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08-20-2013, 06:57 AM | #107 | |
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The 0-40 has been reformulated a while back, when it went to the sn rating it changed and for the better. This is why I run it in the M and I know a few other folks do as well. I change it every 3k miles so if it does shear it is not an issue anyway.
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Last edited by kawasaki00; 08-20-2013 at 07:02 AM.. |
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09-04-2013, 04:39 PM | #108 |
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Good thread, they should make it a sticky -
Here's mine: -2008 M3, DCT -ESS VT3 700+HP Supercharger -Built Motor ~12,000 miles not 15. It looks pretty good for where I'm at.
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09-04-2013, 06:16 PM | #109 |
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Blackstone report was received today, copper/lead readings are abnormally high as expected:
reference: We have an ongoing thread here with more details: http://www.m3post.com/forums/showthread.php?t=880264
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09-04-2013, 07:49 PM | #110 | |
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