Had horrible stiction on my 04 250. Read a couple of places about the T5. I was unable to get in and drive. Took about 10 to 15 min to "warm up" in 100 degree weather. Needless to say it was a major problem. I've used the T5 for about a thousand miles. Started the truck this morning. No key cycling, no 10 min wait. Got in and went. Perfection. I'm sold. Great product.