I'd just like to support protc3 and respectfully ask people not to follow Wally's advice on 30000 wt oil on kingpins.
The reason the car is more responsive is because the oil allows virtually no initial movement in the suspension, so it whips the chassis round. It might seem a good trait, but you're losing time right through the turn with any set-up like this.
3000 to 5000 are the weights to use depending on your preference for the speed the car settles into the turn.