Sorry folks, it is an 84 300d...

Thanks for the oil pressure info. The guage is at 1.5-2 at idle and pegs when above that so it sounds good. I was a little worried, but not anymore.

The car provides good heat when the temperature selection wheel is at MAX but only cool air at any temp selected below MAX. Sound like the monovalve? Or? Any chance of instant failure with this type of problem or will it continue as it is? Max heat north of Missoula is what I want I'm sure!

Thanks again.