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Instead of the whole vacuum pump system couldn't your own design AOS use an engine vacumm line to suck the oil back into the engine without all the complication of the vacuum pump?
As far as the AC discharge if you go that route, offset by eating 3 steaks more than usual (Thereby killing a cow and reducing one of the top methane sources of global warming)
I don't think my 2001 has ever had an AOS replaced so they can last a long time.
Perhaps there's another underlying issue.
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"It broke because it wants to be Upgraded  "
2012 Porsche Performance Driving School - SanDiego region
2001 Boxster S, Top Speed muffler, (Fred's) Mini Morimotto Projectors, Tarret UDP,
Short Shifter, Touch Screen Dual Din Radio, 03 4 Bow glass Top (DD & Auto-X since May 17,2012)
Last edited by jb92563; 07-18-2013 at 11:27 AM.
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