A: Or you could change the lifter like I did (only suggested for a near the end of it's life/not gonna get rebuilt/non-showcars). I used a ball peen hammer to knock a hole in the center of the block just above the lifters, changed the lifter, then siliconed the side of the moter closed. I think it was one of the Ontario rust belt demolition deby cars I had. From: farna@xxxxxxx Subject: Re: It's alive and ticking! To: mail@xxxxxxxxxxxx Message-ID: <ADVANCES62bdkSmLAzt0000054b@xxxxxxxxxxxxxxxxxxxxxxx> Just went over this on a hot rod board! Replace a quart of oil with your choice of ATF, diesel fuel, "Sea Foam", or "Marvel Mystery Oil". "Sea Foam" is probably the best, with diesel, ATF, and MM in that order. You need to run the engine up to full operating temp and keep it there for a while. It won't hurt to tool around town with the thinned oil -- will just burn a bit and may smoke a little. I don't have to tell you just don't drive it hard! Oil pressure will drop about 10 psi, but that shouldn't hurt a thing in the six. I suppose you're aware that you may have a collapsed lifter that won't come back though. That's a common problem in AMC sixes that have sat a while (well, any hydraulic lifter engine that's sat a long time!). Wouldn't be so bad if the head didn't have to come off the change the lifters!