Quote:
Originally Posted by ayao
I'm under the impression that the +FM is used if there is noise coming from the diff, and that once you put FM in there you can't go back to non-FM. My bias would be to just go with non-FM unless I hear bothersome noise. I'd be curious to hear what people think?
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+1 exactly my thinking.
I would think adding a friction modifier changes the way the diff works, I prefer for it to work as fully intended. I will re-evaluate based on noise as the miles come. You can always go to +FM but you cant ever go back, right?