[cowmeat]

First, the Microlon cleaning complex clears the engine of the carbon, varnish, and sludge that can accumulate through normal use.

I'm out.

I've owned cars where carbon, varnish and sludge were the only things holding the motor together and keeping compression.

Never mind, after reading a little further I came to this.

There have been a couple of cases where we have recommended that an engine not be treated, and those cases dealt with very old engines that were essentially held together by the gunk that Microlon will remove.