Thread: 'Diff leak'
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      11-29-2019, 01:30 PM   #5
nbennettksu
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Originally Posted by FlyingLow78 View Post
Quote:
Originally Posted by nbennettksu View Post
If its like all M's before us, its the output shaft seals.
Probably correct. Porsche routed the exhaust pipes on the older Boxsters under the rear axle inner CV boots just like BMW did on our F8Xs, and I suspect the heat is deteriorating the seals. On the Porsches it would dry out and split the inner CV boots. On my stock exhaust there is a secondary plate welded on the exhaust pipe adjacent to the inner boots, so perhaps that's BMW's attempt at a heat shield.

I ordered some header tape and will be wrapping my exhaust where it runs past the diff. Perhaps this will buy me some time on the seals.
When you do that, you'll have a good look at the dog to see where it's leaking. Just make sure the fluid is topped off and you can go as long as you like—until you're annoyed ☺️
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Caddy ATS . . . finally, a decent rental car option.
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the wheels make me mad...
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Originally Posted by mhabs View Post
It's one thing for some buffoon to put an M badge on something that doesn't deserve it...it's another for a multi-billion dollar corporation to do the exact same thing and keep a straight face.
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