This is caused by an oil leak. Anything that is leaking that much would reveal itself to you by having a low oil level, and would require frequent replenishment. In my experience, this has been usually either a transmission cooler line that has developed a leak, or a power steering pump/hose problem. Engine oil leaks will do the same thing, but since you stated that your car doesn't use oil, I am assuming that you are checking that often. What ever it is should leave a spot or two (maybe more) on the floor of your parking spot, but some of these leaks are worse under operating pressure. Paul In a message dated 4/10/2004 5:40:17 AM Eastern Daylight Time, mbecker30@xxxxxxxxxxx writes: > I have a 67 crown that runs good , does not smoke, but if I take it on a long >drive, it leaves a film of wet clean oil on the rear bumper and the rear of >the car, any Ideas of what > would cause that ? thanks, mike > > 67 imps