An oily substance on the windshields of Subaru vehicles is creating visibility problems for many Subaru drivers. The yellowish chemical haze has been reported as being so bad that driving the vehicle is made impossible especially in very bright or night time situations. Solutions offered by dealerships have been to clean the windshield, but the oily film is difficult to remove, and returns in a very short time.
Rumor is that there has been a technical service bulletin issued on the problem, but my searches have come up empty handed. Unofficially, the problem is being blamed on the material used in a rubber seal on the heater box. The material used is “off gassing” to excess causing the build up. The problem is expected to clear up after extended use, but some people with respiratory problems may experience health issues when breathing the fumes.