I'm about to start to repairs on an 03 Prius that is throwing P3120. ADDED: This transaxle died because a leak in the sump ran it dry. Not a reliability issue. How can I be as sure as I can that I'm getting a good used transaxle? What I know so far: 1) High pot test the windings. Can I do this with the 3 main leads: I will bring a Megger to the wrecking yard with me for sure. 2) The oil can be visually inspected and smelled for burning/colour. It could be sent out for testing but this takes too much time. Are there any other ways to check it. Are wrecking yards mileage ratings trustable? Thanks for your input. I may opt for an MG2 replacement from Art's but I have to weigh the pros and cons.