Medium duty engine/tranny?
Who/what/how is this rating awarded?
Forum Discussion
The Allison in the GM, the 6R140 in the Ford, and the Aisin in the Ram can all be had in medium duty vehicles. The only exception is the 68RFE, but this is mainly due to it not having a PTO provision like the others. People just like to throw the "medium duty" slang around because it makes them feel better about themselves.
