Nope I am not a fancy pants racer, just a redneck with an XJ, just trying to figure out about were to set the IFP and get them all close, the 3/4 nitrogen 1/4 oil is what I was looking for, Thankswizzo said:I'm sure if you are one of them fancy pants racers, trying to maximize your performance, there is a specific # to set your IFP depth to. For the other 99% of us, pick a depth, make them all the same and run it. I'd do about 3/4 nitrogen & 1/4 oil in resi. All you're really doing is keeping pressure on the oil to keep it from foaming up.