Check your oil to make sure your coolant isn't getting into or past gaskets into the oil. Then purge your coolant system you may have an airlock. If that isn't it then replace the thermostat. Before one can more accuratly answer this question, he would have to know if the water your losing is external or internal. Are you seeing any leaks? or are you just noticing the level in the reservior is down? Coolant in oil is an indication of an internal leak, which may or may not have anthing to do with the headgasket job. Since your in traffic, there is a chance the cooling fan is not kicking on, and the coolant may be coming out of the overflow reservior.
a cracked gasget could cause that
Yes, both.
copper sheet/if the cylinder head is a small one
its mostly likely aluminum they get worn out get a new one
possibly the head gasget depending on mileage
oil pan gasget or it can be the vavel cove gasget. but if you wash the engain with egain cleaner to get the dirt and oil of it thatn run the enganin to see where the leak is. but becareful of the power stuf when you are washing the engain or you well have more problums
Try replacing oil filler cap.
i had the same problem-yesterday i changed the gasget on the windsheild. seemed to work...
sometimes hoses and components such as heater units etc blow when the head gasget is on the way out
I have a 2000 e320, the oil filter gasget leaks just prior to the need to be changed.
you can use a carquest 84035 part number , its a little bit shorter , but same thread and gasget diameter
You will need an angle guage from halfords or local motor shop,only about