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New Cars Don't All Come With Dipsticks Anymore, Here's Why
(www.jalopnik.com)
This is a most excellent place for technology news and articles.
At that time, Chrysler was owned by Daimler and shared a lot of stuff with Mercedes.
The NAG1 transmission some 300s used in Europe at least, is in fact the venerable Mercedes 722.6
That transmission was used in the US as well, before they switched to a ZF trans.