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06-27-2013, 10:54 AM | #155 | ||
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The new F10 M5 oil is a Castrol 5-30, I believe. Perhaps someone can weigh in whether it's worth the chance? But I'm on the side of "if it isn't broke, don't fix it", there's a reason why BMW elected to stay with 10-60 for the S65. I certainly don't have the technical knowledge to figure out the pros and cons to using M5 Castrol 5-30 vs the standard TWS 10-60 thanks for the tip, but my question was, when should I do the preventative? 60k? 80k? 100k? never until there's an indication in the oil analysis? Last edited by mdosu; 06-27-2013 at 11:00 AM.. |
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06-27-2013, 11:00 AM | #156 | |
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For me: At 23k 4 lead, at 37k, 5 lead, with other wear metals looking better. If at my next analysis (every other change) at ~52k I see a jump, I'll wait another change, check again, if it goes back down, no worries, stays high, worry but just keep monitoring, jumps up again, maybe time to take action
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06-27-2013, 11:03 AM | #157 | |
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I'm on the low mileage annual change cycle. I drive about 7500 miles a year, so I don't get many chances in the next 4-6 years to establish a trend. (unlike the guys who change their oil twice to three times a year due to track or high mileage usage) I just ordered my kit from Blackstone, it's free until you sent in the analysis, so at least it'll remind me to collect the sample next year. Interestingly, they suggested i could have just collected it in a clean jar and transferred it to their kit later. Last edited by mdosu; 06-27-2013 at 11:09 AM.. |
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06-27-2013, 11:11 AM | #158 | |
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On consumption I get what you are saying but oil weight and or brand has little to do with consumption. I stated before certain oils like Quaker state seem to have more burn off than others. While it can help or hurt to a degree the fact remains the oil consumption is mainly due to a ring package that is very difficult to design for a engine such as the one we have. Having enough radial tension vs ring weight is a problem. Our pistons are not gas ported, therefore the radial tension must be kept high enough that it still seals under heavy load low rpm. Having a light weight thin ring is what you want for turning 8500 and relying on gas porting to keep the ring sealed. When a high tension heavy weight top ring is used it will actually distort quite badly and look like a wavy lays potato chip in the ring land at that rpm. So what I am saying is the consumption will always be there because the top ring is out of control at 8500. Furthermore I run the rotella 5-40 and I change it every 4k miles. The cost of the oil allows me to change it more often. I have NEVER had to add oil because the 4k miles or the 6 months always comes up first. I am not knocking the tws because it really is a superior oil to almost anything on the market today. The big problem is that it is a 10-60. I am by NO means telling people what to run. If others want to run something different more power to them, or those who choose to stick with the tws that is on there own account.
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06-27-2013, 12:21 PM | #159 |
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06-27-2013, 12:40 PM | #160 | |
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06-27-2013, 12:42 PM | #161 | |
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Looks like Blackstone is going to be receiving a bunch of oil kits from M3post
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06-27-2013, 12:46 PM | #162 |
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On page 7 (Engine-4: Stock internals, supercharged, Mileage: 72,000), that is my engine. I replaced the bearings with the VAC coated units. Active Auto did all the work and they measured the VAC coated units with OEM stock units...the clearance was the same.
I swapped out the bearings since I upgraded the supercharger to their newest level. Some caveats: -I change my oil every 3-5k miles -Let the engine warm up where the oil temp is at 210; never pass 3k rpm until then -Used the OEM Castrol until a 1.5 years when Active switched over to Redline -Currently per Active's recommendation I'm using Mobil Race Oil 0W50 (ran for once cycle already...sent in my sample to Blackstone) Quite literally, after the new VAC bearings went in the car, she's had over 20-25 dyno runs to track down a boost issue. So it will be interesting to see the results from Blackstone. In as far as Active's new supercharger...holy crap it's FAST. Very happy with the upgrade from the HKS unit. Also, I notice that my oil temps don't go as high in the past when I had the HKS unit when on long drives (i.e. 50+ miles highway in 90+ degree). I attribute that to the larger intercooler and Rotrex supercharger not having to push as much as the HKS unit to make the equivalent power. |
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06-27-2013, 12:47 PM | #163 | |
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But for the moment we all answer a question with more questions ,and maybe i'm thinking like a fool...when i think... we need something like a scanner for metal & aluminium to check these damn bearings and looking inside the motor ,and the same time i know it's not possible ! For the oil....maybe yes....maybe no , so i need to choose the correct button...who knows v v v Last edited by ///M Power-Belgium; 06-27-2013 at 01:44 PM.. |
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06-27-2013, 12:55 PM | #164 |
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I still believe regardless of all the talks, that warming your motor up, not loading it when cold, and doing more frequent oil changes and you are fine. Have fun! On a final note it has not been discussed about the damaging effect of revving your motor up in Neutral to impress friends or whatever is a no no. Oil pressure will not climb as fast as this motor can spin up to 8400rpm with no load against it. Bad news.
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06-27-2013, 01:07 PM | #165 | |
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Why ? The BPM tune... and the reduced red line limiter(reduced to 4 K RPM ) in cold start cycle,that is one of the good things about the BPM tune & DCT software Last edited by ///M Power-Belgium; 06-27-2013 at 01:16 PM.. |
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06-27-2013, 01:18 PM | #166 |
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06-27-2013, 01:24 PM | #167 | |
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06-27-2013, 01:29 PM | #168 |
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06-27-2013, 01:47 PM | #169 | |
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On a more serious note, I understand that it's bad to rev the engine up without load. But how is that different than rev matching on a down shift and you clutched in and rev the engine up to like around 6k rpm? |
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06-27-2013, 02:16 PM | #170 |
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06-27-2013, 02:20 PM | #171 | |
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Chances are , if you are doing this correct, your rpm when you go to rev match will not be starting from 850rpm. Oil pressure should already be there. This sound right?
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06-27-2013, 02:41 PM | #172 |
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Check this out... v v v v v another BIG bearing problem,and one with a sad story
And...BTW this guy had just received a good oil sample from Blackstone....this shoot's off.. all the previous comments of oil samples And now guy's what's next......................... http://www.m3post.com/forums/showthread.php?t=858239 Last edited by ///M Power-Belgium; 06-27-2013 at 02:53 PM.. |
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06-27-2013, 02:54 PM | #173 | |
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This is a pinion bearing!
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06-27-2013, 03:05 PM | #175 |
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Not really. You can buy a diff from a BMW dealer's online parts sales site, like BMW Morristown, for well under $2k. The BMWNA MSRP on the part is ~$2.7k even.
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06-27-2013, 03:08 PM | #176 |
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