1. Preparation is Key:
* Safety First: Jack up the car securely and use jack stands. Never work under a car supported only by a jack. Wear safety glasses.
* Right Tool: Make absolutely sure you're using the correct size and type of socket or wrench. A 1/2" drive socket and ratchet is generally recommended for this application, although it *might* be a 3/8" drive socket. A six-point socket (not twelve-point) will generally be better as it'll better grip the bolt.
* Penetrating Oil: This is your best friend. Liberally apply a good quality penetrating oil (like PB Blaster, Liquid Wrench, or Kroil) to the drain bolt. Let it soak for at least 30 minutes, preferably longer (even overnight). Reapply periodically during the process. Work the oil down into the threads by gently tapping the bolt with a hammer.
2. Removal Attempts:
* Try a Ratchet: With the penetrating oil applied, try your ratchet again. Use slow, steady pressure. Avoid jerking or applying excessive force.
* Breaker Bar: If the ratchet isn't enough, use a breaker bar for increased leverage. Still, apply steady, controlled pressure to avoid stripping the bolt. Use a six-point socket.
* Impact Wrench (with caution): An impact wrench can be effective, but *use it very carefully* on this type of bolt. The force can easily strip the bolt head or damage the transmission case. Start with low settings and gradually increase the power if needed. Remember the bolt is probably rusted and the transmission case is aluminum. Too much force is an easy way to snap the bolt off.
* Vice Grips (as a last resort): If the bolt head is rounded or damaged, you might be able to get a good grip with vice grips. However, this is risky, as it can easily damage the bolt further.
* Heat (with extreme caution): As a last resort, consider carefully heating the bolt with a propane torch. This can expand the metal and break the corrosion bond, but be *extremely* careful not to overheat the transmission case (aluminum melts easily!). Only heat the bolt head, not the surrounding metal.
3. If the Bolt Breaks:
If the bolt breaks off, you have a more serious problem. Options include:
* Extraction Tool: You'll need a bolt extractor set to remove the broken bolt. These tools require careful use and can be challenging.
* Drilling: In extreme cases, you might need to drill out the broken bolt, but this requires precision and specialized tools to avoid damaging the transmission case. This is usually best left to a professional.
Important Considerations:
* Aluminum Case: The T-5 transmission case is aluminum, which is softer than steel. Be gentle to avoid stripping the bolt head or damaging the case.
* Magnetic Drain Plug: Some T-5 transmissions use magnetic drain plugs. These can sometimes be quite stubborn due to the magnetic attraction. Extra penetrating oil and patience will really help.
When to Call a Professional:
If you've tried all the above methods and the bolt is still stuck, it's best to take your car to a mechanic experienced with transmissions. They have specialized tools and expertise to handle this situation without causing further damage. The cost of a professional repair will likely be less than the cost of replacing a damaged transmission.
