Friend of mine picked up a Saturn (S-series) and Isince I'm familiar with enough of the problems that I've had, I told him I would give a hand with some of the fluid changes and maintence. Changing the ATF today, clearly it had not been touched in a long time. My question - we got about 4 qts. out of what (IIRC) is a 7 or 8 qt. capacity. How far should he drive before the next drain and fill?