I used what I had, 30k front and rear and 60k in the center and it seems to work good.
Mine actually did have oil...... I was surprised. Others also have said the diffs only had two spur gears but mine did have four.
Mine has been a great little truggy. I did remove the diffs to inspect and it had the four pinion gears in all three differentials. I bought this for my boys to rub around with and am running it on 2S. I had read about some having heat issues so I ordered a fan and heat sink when I ordered the...