Originally Posted by cementsurfer86

Just as you said, with the fluid diff you'll notice more drive out, and you'll be able to drive more aggressive going in.

The thicker the fluid, the more drive coming out, but that also creates understeer going in. The key is to tune for the track conditions. I'd try something thick to start, and as you get used to the feel of the car afterwards, you can then use thinner oils to get back that steering on entry. Are you racing carpet or asphalt?