Upon re-reading the thread, I noticed that I didn't provide a rationale for my 60K mile recommendation. Mike Miller (of Roundel) still recommends that. I also believe that 100K is too long - even given the fact that I don't believe in the "if you wait too long you should never change it as it will kill it" rationale.
At the cost - fluid is like $40/quart! - 30K seems unreasonable.
Not that my opinion matters too much, but there is my rationale. YMMV.
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