My car ('03 'base' DeVille) has a slight ticking at idle. If I had to guess, I would say that it sounds like a lifter. I change the oil/filter more often than needed, always using good synthetic oils.
It's been like this for a few months, doesn't seem to be getting any worse, but I'd like to fix it, if possible.
Any suggestions?....... Engine flush? Special oil or additive? High speed run?
Thanks for any help.