Originally Posted by SnowPlow

I've tried to use the instructions on diagnosing the transmission, but I'm obviously not reading them right or they are worded, out of order.

My car stopped shifting into high gear, the shift from 2 - 3 is real hard and I'm reving to 5k going about 55-60mph. I was just going to trade it in this coming week now I'm scared they wont take it. I checked the fluid, its dark. I noticed alot of fluid on my exhaust near the cats. I changed fluid and added some stuff that is supposed to help shifting.