There was some discussion about this a few years ago. Some sources implied that more fluid was not a good thing. There was one source connected with Mitsu's 24 hours of the Nurburgring where they ran slightly less fluid than the stock level for better results. You can find it if you search the forums. I don't think there are any problems with the pan running more fluid, but the issue was around what's best for cooling.
The dip stick is a nice feature but it doesn't have an actual mark, you have to set it for yourself.
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