text: i have a 2003-dodge pickup with a 4.7 liter engine in it, i have what appears to be condensation sludge in my? the sludge / condensation is only in my oil fill and on the plug.  it is neither on the oil stick or in the antifreeeze over fill is this normal for the 4.7 liter engine. check the pcv system to make sure it is working properly. if that is not working properly than your engine is not getting proper ventilation and condensation will built up in the engine. than check to see if you are losing coolent.