In a message dated 97-03-02 14:06:52 EST, khaskins@indiana.edu (Kyle Haskins)
writes:

<< The air comming out of the heater in my 80 camper smells kind of like 
 exaust.  It only smells when I have the heat on.  I was wondering if 
 there is an air filter anywhere that could be replaced.   >>

sounds like your heater boxes are saturated with oil from a leak in the
engine somewhere. Does your van burn oil?

chris