How low can you run the oil before the light comes on

[benebob]

Just trying to get the max amount of power out of the racer. I know that by lowering the oil in the pan you actually increase your power and also your weight is saved. Just wondering how low one can go before the light would come on. Never had a light on a subie come on but I'm quite anal about keeping my oil level between the H L marks and check it weekly. I'm thinking probably about 3.5 quarts would be enough so long as it is changed often enough. Anybody wanna admit to the neglect of having their light come on and let me know how low ya were. PM is fine if you don't wanna be blasted by some. I'm sure I will be over the post.