I run pretty much the same truck as seen in the traxxas ultimate off road jato, about all the upgrades and settings.

In grass and over rough terrain, my diff has a tendency to unload too quickly, so I have one tire in the air spinning, hence ballooning, like mad.

Any idea what wt the stock fluid is?

What is the thickest you can get? OFNA 120,000wt?

Is that too much? What to go with?