Thanks danielsatur, I'll sniff around the coolant to see if it smells like exhaust. I'm just curious if I've worsened an already existing problem (the oil use) or if I started another one by messing up the head/head gasket. I've got an appt Wed to take it to the shop.
I've cracked a head before in my old 240 but it was a lot different. Loss of power and billowing white smoke. This seems more like an oil problem but I'm curious why running the car for a few hours would cause it.
Thanks,
Larry