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      04-01-2008, 04:06 PM   #15
lucid
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Drives: E30 M3; Expedition
Join Date: Apr 2007
Location: USA

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Quote:
Originally Posted by GregW / Oregon View Post
"The transmission begins functioning at an optimal level only after a distance of approx. 300 miles/500 km. Do not exceed engine speeds of 5,500 rpm during this period." No mention of the differential.
Yep, I saw that in manual. The engine speed limitation clearly applies to the rotating parts that would rotate at that speed. What's behind the transmission is a different story though as that's directly coupled to vehicle speed through a fixed ratio. Meaning, the driveshaft will be spinning much faster in 4th gear than it would in 1st at 5500rpms. That might be why there are two constraints: one on the engine speed and another on vehicle speed. But I am just guessing...
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