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Switched from 0w30 Syn to 0w40 Syn for my 10k today. Turbos seems to whistle

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Old 11-23-2001, 12:20 PM
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Default Switched from 0w30 Syn to 0w40 Syn for my 10k today. Turbos seems to whistle
a bit more with the 0w40. Has anyone else noticed this ?
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Old 11-23-2001, 12:31 PM
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Default nope 0w30 or 0w40,
sounded the same when I switched
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Old 11-23-2001, 12:33 PM
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Default sounds odd...but if it's true, it may be because it's not coming up to temp as quickly...somebody...
correct me if I'm wrong. I don't think all of a sudden switching to that is going to change the pitch of your turbos because of a tad bit heavier oil.

Maybe it's just in your head.
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Old 11-23-2001, 12:38 PM
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Default Yes, I noticed that too...
In fact, I switched to 0w40 syn mobil 1 for my 32k service (performed at 30k), and my turbo(s) blew one month later at 32k miles. Coincidence? This is the recent turbo failure btw, the repair is being performed next week.
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Old 11-23-2001, 12:39 PM
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Default 0w is 0w, only it's high temp viscoisty is different
0w40 is not heavier than 0w30.

it is just less likely, to thin out under track or summertime oil temps
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Old 11-23-2001, 12:41 PM
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Default I think, if you switched from shell to chevron, you'd blow a turbo
you simply have extremely bad luck with S4's

0w30 to 0w40, is defintely completely incidental to your turbo failure
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Old 11-23-2001, 12:41 PM
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isn't the 0 just the apparent weight though?...and the 40 would indicate what you just said, right?
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Old 11-23-2001, 12:41 PM
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You bore me with your watery oil It may also depend on the manufacture.
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Old 11-23-2001, 12:46 PM
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or it could be related to anything else...and not the oil weight
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Old 11-23-2001, 12:47 PM
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find one of CaliAudiS4 posts, his sig has tons of good links, Directly on this topic
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