The fluids in my diffs have been deteriorating really quick.

I have to change them every race meet, and at a national the other week had to change them before the finals.

Pulled my diffs apart yesterday and fluids had gone black after only doing them last week and when I went to reassemble, I noticed the bevel gears had a little resistance on the shafts, so pulled them off, and there is a definate wear groove on the shafts where the bevels sit.

The metal particles coming off the shafts must be what is deteriorating the fluids faster than what it should.

Anybody else had a similar issue or noticed wear on their bevel shafts?
I'm sure someone will come on a just say it's a consumable item and get used to it 3 meetings was the norm for my 1.0, not just 1