Kinda get me P.O'd but I lost the warranty on the whole car, a 1994 ZR-1 back in 1995 for believing redlien when they told me their products "meet or exceed" API and G.M specs.

Anyhow on another forum I always see vette owners telling others to switch away from stock fluids/oil to redline, never telling them they can lose their warranty.
This week on a forum on guy claimed to have contacted Getrag who has the rights to the B.W 6-speed that is used in the C5s, and claimed the vendor said redline was OK to use while under warranty.
Well I contacted the CEO of Getrag and in part got this from one of his people, in response to me asking if they agree to switch to redline while car is under G.M warranty.

I am supplying his contact info so you can also get first hand info.
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Dear Mr. Rovner,

Please tell us who from GETRAG sent e-mails to customers as mentioned below.
We, from GETRAG sales totally agree with you and act already in the way you
described.


Thank you for your information

Michael Hinzel
Senior Manager
Customer Team

GETRAG
Getriebe und Zahnradfabrik
Hermann Hagenmeyer GmbH & Cie
Tel.: +49(0)7141 / 99-4271
Fax.: +49(0)7141 / 99-4452
e-Mail: Michael.Hinzel@GETRAG.de
Homepage: http://www.GETRAG.de
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John