How can you get rid of varnish? Looking through the oil fill hole I can see varnish and btw is it harmful to the engine?
I would take varnish over sludge....eventhough it looks ugly when you take off the valve cover.
A big +1 to that! Varnish is pretty much harmless. We've had good luck with MMO slowly removing it. Try adding a pint to the oil about 1000 miles before you change your oil, over time it will clean it up. Or run a good synthetic and forget about it, in time something like PP should clean it up.