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Introduction: Motul
Hello 928 Enthusiasts,
I wanted to drop a line and say "hello" and let you know that we now have been a sponsor of Rennlist for about 30 days now. We started posting in some of the 911 and 924/944/968 tech forums and have had some great feedback and dialog there from oil formulation theory, application questions and how Motul can help with your car's longevity and performance. We'd love to continue the dialog here with the passionate 928 owners as we have full coverage of the Porsche brand for all of your lubricant needs. Drop us a line in the thread with any questions you may have. -Nick |
https://cimg3.ibsrv.net/gimg/rennlis...d3c686d8cd.jpg
https://cimg9.ibsrv.net/gimg/rennlis...1acc23124d.jpg https://cimg2.ibsrv.net/gimg/rennlis...0dcfc5815a.jpg Never ever use Motul oil. This is what happened to a BMW Alpina B10 4,6 V8, not once but twice. The very expensive oil Motul 300V Competetion 15W50 was used. The car has always been used for long distance driving, no short trips, no additives, oil change intervals always within specs. Åke |
Good heavens:corn:
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Originally Posted by Strosek Ultra
(Post 15202196)
Never ever use Motul oil. This is what happened to a BMW Alpina B10 4,6 V8, not once but twice. The very expensive oil Motul 300V Competetion 15W50 was used. The car has always been used for long distance driving, no short trips, no additives, oil change intervals always within specs. Åke Cheers, Dave |
Originally Posted by DR
(Post 15202559)
Wow, was that your BMW?
Cheers, Dave No one has been able to give me a good probable explanation why this real heavy oil sludge build up occured. First time it was not that bad but one or two oil changes later it looked like you have seen on the pictures. The Swedish Motul rep just said quote: "This is an racing oil you have to change it frequently." I find it unacceptable, that is not what they said when I first started to buy the oil. The BMW has a service indicator telling you when it is time to change the oil which usually takes place with an interval of 7500 to 10000 km. However I have suspicion, but I do not know, that the BMW crankcase ventilation system has something to do with the sludge build up. I have been running the same oil in two of the 928 cars and when the next oil change is coming up I will remove the sump for inspection. I first noticed the problem when the BMW valve lifters started to make noise, to tick loudly, which I so far have not noticed for any of the Porsche cars. Åke |
Originally Posted by Strosek Ultra
(Post 15202651)
Yes, it is my wifes BMW Alpina cars since 1997. I have personally always changed the oil and did not notice any problem until one or two oil changes ago. Now I have had the engine completely apart for cleaning. I could not find any abnormal wear but oil sludge everywhere and the hydraulic lifters were clogged.
No one has been able to give me a good probable explanation why this real heavy oil sludge build up occured. First time it was not that bad but one or two oil changes later it looked like you have seen on the pictures. The Swedish Motul rep just said quote: "This is an racing oil you have to change it frequently." I find it unacceptable, that is not what they said when I first started to buy the oil. The BMW has a service indicator telling you when it is time to change the oil which usually takes place with an interval of 7500 to 10000 km. However I have suspicion, but I do not know, that the BMW crankcase ventilation system has something to do with the sludge build up. I have been running the same oil in two of the 928 cars and when the next oil change is coming up I will remove the sump for inspection. I first noticed the problem when the BMW valve lifters started to make noise, to tick loudly, which I so far have not noticed for any of the Porsche cars. Åke Just a thought, Cheers, Dave * |
Boy, talk about serendipity.
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Originally Posted by Strosek Ultra
(Post 15202651)
Yes, it is my wifes BMW Alpina cars since 1997. I have personally always changed the oil and did not notice any problem until one or two oil changes ago. Now I have had the engine completely apart for cleaning. I could not find any abnormal wear but oil sludge everywhere and the hydraulic lifters were clogged.
No one has been able to give me a good probable explanation why this real heavy oil sludge build up occured. First time it was not that bad but one or two oil changes later it looked like you have seen on the pictures. The Swedish Motul rep just said quote: "This is an racing oil you have to change it frequently." I find it unacceptable, that is not what they said when I first started to buy the oil. The BMW has a service indicator telling you when it is time to change the oil which usually takes place with an interval of 7500 to 10000 km. However I have suspicion, but I do not know, that the BMW crankcase ventilation system has something to do with the sludge build up. I have been running the same oil in two of the 928 cars and when the next oil change is coming up I will remove the sump for inspection. I first noticed the problem when the BMW valve lifters started to make noise, to tick loudly, which I so far have not noticed for any of the Porsche cars. Åke That sludge build up is quite significant and has taken a long time to get to this point. This has been occurring for sometime.... While 300V is a racing oil, your oil change interval of 7500-10,000 km's is acceptable assuming there weren't excessive track days or something out of the ordinary. There's 3 factors that can contribute to this if you're not doing anything outside the ordinary: - CCV (crank case valve ventilation) failure- this is quite common on the E36/E34/E39/E46 etc*and can lead to significant oil sludging issues. Cold conditions will worsen this (higher concentration of condensation) Example of CCV failure: https://www.bimmerfest.com/forums/sh...d.php?t=445227 - Short trips where the oil isn't getting up to temp under colder conditions *these are BMW specific for excessive sludging issues My questions are: Have you ensured the CCV system is operating properly? Can you confirm/deny that the driving is short trips? Using such a high viscosity can exacerbate your symptoms, please provide reasons why a 15W50 is being used? Can you provide more history? How long or often have you used 300V on this car? What product did you use aside from 300V? -Nick PS- in all my years in all environments, 300V has never looked like this under the most*servere*conditions imaginable (Dakar, Le Mans) unless there was a mechanical issue or user error. |
worked fantastic in my KTM and Duc's.......
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Never had any issues with Motul and we are running it in my Father in-law's 480HP LSx Escalade.
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I’ve never used motul but I do have several friends who swear by it in their jap cars. In my Audi and VW I have used Liqui Moly as the reviews & price being distributor cost is too good of a deal. I have been peeking over the fence about Motul though!! |
So would this be the rec for a 20W50 for 928s?
https://www.motul.com/us/en-US/produ...6-9881333c9389 |
Originally Posted by Rob Edwards
(Post 15203413)
So would this be the rec for a 20W50 for 928s?
https://www.motul.com/us/en-US/produ...6-9881333c9389 |
Originally Posted by Rob Edwards
(Post 15203413)
So would this be the rec for a 20W50 for 928s?
https://www.motul.com/us/en-US/produ...6-9881333c9389 For regular street driving- yes. Please note this is a conventional oil. If you want to run a synthetic or a higher performing street product that's also suitable for track use, please use the 4100 Power 15W50 found here: https://www.motul.com/us/en-US/produ...00-power-15w50 For extreme driving conditions or track dedicated vehicles, please look to the 300V Competition 15W50: https://www.motul.com/us/en-US/produ...ition-15w50--2
Originally Posted by worf928
(Post 15203489)
TDS provides no specification for PPM of ZDDP.
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Point 1 : If a certain spec is important, I will not buy the product without that spec stated in an official datasheet (Datenblatt).
Point 2 : In addition, all oil manufactures are in a constant state of optimizing their juice. Without a spec that is "hopefully" updated, I have no way of catching the changes. So in summary, your statement of **around 1300 ppm** is good today, but tomorrow, who knows? |
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