I have a 99 Passat with one lifter that makes noise whenever the oil gets more than 1000-1500 miles old. Not always, just most of the time, more when warm then cold. It's a bigger problem when running lighter oils, like the
10-30 Mobil 1 I used to use, so I switched to 20-50 conventional oil, which stops the problem until the oil gets broken in, then it comes back.Seems to me like one lifter just has a bad seal, is it difficult to get in and change just one lifter? Is there some other way to quiet it? I've got this shiny pretty car, but it sounds like a tired old econobox.
Thanks,
Bob Graham