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OIL--why 0-40wt? Study w/great facts...

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Old 07-30-2006, 06:52 PM
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1999Porsche911
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Originally Posted by bgiere
M1 0w40 is a very capable oil...good enough to do 12-15,000 OCI's if you are so inclined...i can post used oil analysis reports if anyone has an interest in seeing them. The Carrera Cup series in Australia (really hot weather) is using a Fuchs Silkolene 0w20 with great success. Those engines are rebuilt more often of course, but the wear rates and tests show terrific protection. Oil that looks dirty means the oil is doing its job and keeping contaminants in suspension. FYI,there is absolutely no way to judge an oils suitability based on color. It has been proven many times over in many different climates and engine types that a heavier weight oil does not necessarily give better engine protection.

You might want to post a link to this so called proof that a thicker oil does not better protect a hot engine that does a thinner oil. Never seen a study coming even close to this result, nor has it proven true in the real world. Oil is used to cool, lubricate, clean and seal componants in the engine, and a 0W40 oil will not do all four of those things when the oil is 240F+ as well as a 15W50 oil.

If you are only looking for maximum horsepower, then use olive oil with turpentine. But most of us want our engine to not only perform..but to last.
Old 07-30-2006, 07:09 PM
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wross996tt
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Originally Posted by 1999Porsche911
That TSB shows that 5W50 IS approved.
Right again! (it is one line in the 40 lines of approved oils) Man my eyesight is going...any oil to help that? I promise not to post on oil related issues ever again.
Old 07-30-2006, 07:09 PM
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bgiere
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Hiya there 1999porsche911! I wouldn't dream of disagreeing with you....how many articles would you care to read? Enjoy!
http://theoildrop.server101.com/cgi/...sts;u=00005914
Old 07-30-2006, 07:22 PM
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Oh what I wouldn't give to see Doug Hillary (https://rennlist.com/forums/porsche-supercars-carrera-gt-918-960/249494-c-gt-oil-change.html) and 1999Porsche911 go post for post in the oil thread. Now that would be entertaining.
Old 07-30-2006, 07:26 PM
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Originally Posted by bgiere
Hiya there 1999porsche911! I wouldn't dream of disagreeing with you....how many articles would you care to read? Enjoy!
http://theoildrop.server101.com/cgi/...sts;u=00005914
Ok...I'll start calling myself "Jim the Oil Guy" and then that will require everyone to beleive what I say about oil? A little experience would go along way in helping you understand the importance of the right viscosity of oil to use when running a hot engine.

Like I said before...it would be nice if you could show us a study that proves your position.
Old 07-30-2006, 07:31 PM
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I'd just go with what Porsche says.

I'm a doctor, and this reminds me of patients who say, "well, if one pill's good then 4 oughta be better", and then they end up with kidney failure or something.

-B
Old 07-30-2006, 08:07 PM
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Originally Posted by LVDell
Oh what I wouldn't give to see Doug Hillary (https://rennlist.com/forums/showthread.php?t=249494) and 1999Porsche911 go post for post in the oil thread. Now that would be entertaining.
Dell I was thinking the same exact thing
Old 07-30-2006, 08:12 PM
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SilverSteel
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This is waaaay of topic, but I saw those comments from the good Doctor about one pill two pills, etc. and I thought of what my neighbor was telling me last week. You see, my neighbor is an anesthesiologist and shares many of his crazy hospital stories with me. One night about a month ago, this guy comes in with a towel around his waist complaining of abdominal pains. He tells the nurse on duty manning the ER desk he needs to see a doctor asap. So a few minutes later they lead him back to a bed where he gets comfortable. The nurse comes in and starts asking questions to find out he had taken three Viagra and his erection wouldn't go down after 4 painful hours. Well, they had to insert a needle into one of the arteries of his ***** to relieve the pressure. BTW, his pecker was almost purple. You don't hear about this on the ED commercials do you?

Sorry for the hijacking...
Old 07-30-2006, 08:24 PM
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Originally Posted by bgiere
The Carrera Cup series in Australia (really hot weather) is using a Fuchs Silkolene 0w20 with great success. Those engines are rebuilt more often of course, but the wear rates and tests show terrific protection.
The 20W is likely used to provide a bit of additional hp based on lower viscosity based losses, coupled with the fact that the engine IS going to be inpsected and rebuilt quite a bit more often than a street car/garage queen.

FWIW, I run M1 15W-50 in my Euro Cup (since I don't drive when it's cold enough for the Hoosiers to turn into shiny hockey pucks, so cold start is not an issue).

FWIW#2: If you have a street car/garage queen and only start/drive it when it's warm (WELL above 32degF), then there is little reason to run 0W oil. A 5W oil is a better choice.

No, I'm not an oil guy, but I DID stay at a Holiday Inn Express last night.
Old 07-30-2006, 08:25 PM
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LVDell
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If they only had M1 5w-50 here in the states!
Old 07-30-2006, 08:38 PM
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Originally Posted by LVDell
If they only had M1 5w-50 here in the states!
Use the Syntec or move right to the M1 15W50. 5W or 15W makes no difference in flow in warmer climates. 15W will keep your tappets quieter too.
Old 07-30-2006, 08:41 PM
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bgiere
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I've been down this road one toooo many times! Pick an oil that's on the approved list and use it! You will be fine and your engine will certainly not grenade. Split hairs,agonize over the optimum lube, and do used oil analysis testing and you'll get 300,000 miles instead of 250,000 miles before you need a rebuild....now with that said, there is clearly a correct viscosity and an incorrect vicosity which we can choose to use if we so desire. To each his own. BTW, 1999porsche911, you need to click on that link to see the articles. I've included discussions on both sides of the argument...read some of them. And I've got more than "a little" experience with oils and the importance of using the right lube for the intended application. But thanks for the suggestion!
Old 07-30-2006, 09:00 PM
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LVDell
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Originally Posted by 1999Porsche911
Use the Syntec or move right to the M1 15W50. 5W or 15W makes no difference in flow in warmer climates. 15W will keep your tappets quieter too.
I had 0W-40 in off months and 15W-50 in HOT months in Vegas but now in North Carolina I don't have those heat issues. Back to 0W-40 all year for me. Thanks for the tip on Syntec.
Old 07-30-2006, 09:19 PM
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Originally Posted by LVDell
I had 0W-40 in off months and 15W-50 in HOT months in Vegas but now in North Carolina I don't have those heat issues. Back to 0W-40 all year for me. Thanks for the tip on Syntec.
Where in NC are you Dell. I got a place in Chapel Hill and a brother in Charlotte.
Old 07-30-2006, 09:23 PM
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Sweet! Right down the street from you in Cary.


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