Here's why:
* Complexity: It's not a simple drain and fill like engine oil. You'll likely need to perform a partial flush (multiple drain-and-fills) to get a significant portion of the old fluid out. A complete flush requires specialized equipment that most DIYers don't have.
* Precise Fluid Level: Getting the transmission fluid level exactly right is crucial for proper operation. Incorrect levels can lead to premature transmission failure.
* Potential for Damage: Improper procedures can easily damage the transmission, resulting in costly repairs.
* Special Tools: You'll need a transmission pan, a torque wrench (for correctly tightening the pan bolts), and potentially other specialized tools depending on the method you choose.
* Messy and Time-Consuming: Working under the vehicle with transmission fluid is messy. The process itself is also time-consuming.
If you're mechanically inclined and have experience working on vehicles, you *might* be able to handle it. However, if you're not comfortable working with transmissions or lack experience with this specific procedure, the risk of causing damage far outweighs the potential cost savings.
Instead of attempting it yourself, consider:
* Taking it to a transmission specialist: They have the expertise and equipment to do it correctly.
* Getting a quote from a reputable mechanic or transmission shop: This will give you a comparison to the cost of DIY repairs, factoring in potential tool purchases and the value of your time.
In short, while theoretically possible, a professional is usually the safer and more reliable choice for a transmission fluid change on a 2000 F150.
