[E-fanatic]

The 30,000 that comes stock doest offer much resistance and feels like there is nothing in them(like an open diff) the 50,000 helps alot. I see that you have a few losis and I know they only use up to 10,000W in the diffs and that feels very stiff. The traxxas diffs need such heavy weight b/c of its design (has less gears in them than a 1/8th diff does, so the oil has to work harder to slow them down) Thats why the heavier fluid