Diff Fluid leak
I don't know alot about the rear end/gears/diff etc... but I don't really think anything is broken. The last lap I was on the track was my fastest of the day. No sound/grinding that I could hear. Sometimes I'd hear a little clunk when I was shifting from 3rd to 4th. That sound happened on the disengage not the engagment of 4th.
This was the first time I'd hit the track without change the diff fluid first. So this was my second event (third day) with the same fluid.
Where shoud I start looking to diagnose this leak?
Should I drain the fluid and look for metal shavings?
Is it possible I overheated the fluid and it boiled/foamed out?
Thanks.
Gary.

