XRAY - Model racing cars

Sorry if the question have been ask before. How often do you guys change the diff oil. Is there any guide on when we should change it or i just top it up every time when it dry up.

Thanks.

p.s. I just bought the XB8R last month and it is my first buggy. I manage to TQ in the C Main and end up 2nd place in my first ever race. Just love the Buggy.

You should really do it probably every 4 hours of run time. I haven't done mine in probably over 10 hours, guess I should get on that, should be interesting to see what kind of shape they are in.

The first diff oil change was when I have done a gallon and it have some burning smell. The 2nd time is before the race and the 3rd time is after the race (6 x 10 min heat and 1 hrs final).

All togather I have done almost 3 gallon now.

At least now I have some guide when to check and change the diff oil.

Thanks for the info.