I have a 1986 420SEL and the same thing seems to be happening to me. I've had so many people look at it and have no idea how to fix it.
I'd like to start off with the least expensive way of fixing it so please tell me where can I find the vibration damper stock?
If I went ahead with getting the lifters replaced, how much do you think that would cost?
I've been using the highest level of synthetic since she has close to 200K miles.
Any help would be very appreciative!

Thanks!