A second head gasket in 40k? Did your tech torque the head down properly? Did he/she verify that the top of the engine block and bottom of the cylinder head were not warped? Have you had any overheating episodes since the last gasket replacement? Did your tech buy the gasket from a non-MB source?
If oil is found in the coolant, there is a good chance that coolant is in the engine oil as well. As coolant is a poor lubricant, damage to the crankshaft bearings is possible. $$$$.
As I'm posting from NE PA, I can understand your reluctance to be without AWD, particularly this week. However, I strongly suggest that you get to the bottom of this problem immediately. The cure will almost certainly be less expensive than an engine failure.
Last edited by PaulC; 12-27-2002 at 11:12 AM.