My diff started to squeal yesterday so I thought it was time to clean it and relube it.
I took it apart, everything looked fine (no apparent gear damage or meltdown), cleaned it thoroughly and relubed it with Associated grease (http://www2.towerhobbies.com/cgi-bin...?&I=LX2882&P=7).

Today I tried out the car and at first it was silky smooth.
However after 5mn or so the diff started to squeal again...
What can I do? Maybe I didn't put enough grease? How much of that small tube are you supposed to put? (I put about 1/3 of the tube but it's a smaaall tube).
I put grease on the gears and inside the diff gear on the balls.
If I needed a whole tranny rebuild it wouldn't have been smooth during the first few minutes, no?
I tried tightening and also loosening the diff a little but the squealing stays.

Thanks for the advices.