My 1984 Wartburg 353S has been a model of dependability for two years. But in the last few months, I've noticed a weaker idle. I did the obvious stuff like clean the fuel filter and check the plugs to no avail. I was under the hood, about to "cheat" and turn up the idle speed on the carb, when it occurred me to check my fluid levels since I hadn't in a while. Well, disappointment lurked in the radiator. The coolant was a milky color and the cap was covered with oily sludge. So, I've begun removing cables and hoses and draining the coolant in preparation for removing the head. This is a messy job. Boo! Why is this happening to me? I've led a very clean honest life.