If you are comforatble getting under the car, and changing oil, i'd say, do about 3-4 drain and fills within a week. thatll be as effective as a flush. I did mines at 50K. and the car felt a little more peppy after it. i still drain and fill with every 4-5 oil changes.
If u want to try to do the flush, youll need a case of dexron III,, i use Castrol D-3 Synthetic) whatever u choose should b ok as long as its Dexron 3. You'll need a 10mm hex, and breaker bar, it can be hard to break it initially.
Also, a drain and fill only takes 2.5 Quarts at a time. Mines is a V6 however, if you have a 4 cyl, u'll need someone else to confirm that for you.
g/l on what u decide to do.
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