Alright guys my truck has been doing a tick on start up when I start it in the morning. It goes away within 5-10 seconds and then it doesn't make a sounds for the rest of the day. It only started to happen after I changed the oil. I always change my filters with motocraft. The engine has 124k on it and about 8400 hours. I kno it means a lot of idling time but it runs beautiful other than that lifter noise on start up. The truck has been deleted a month after I bought it and I have only put 4K on it. I changed it with rotella 15w40 should I change it again and put motor craft oil in it? And do the heads have to come off to replace the lifters? And if so does that mean that the rocker arms are on their way out also?. Tell me what you guys think.