Black Streaks (Under window) up date
OK, I have tried everything everybody suggested. Star Brite from west marine, mean green mildew destroyer, awesome, Mcguiars marine RV one step compound, and others. Seems like the Star Brite removed ...
Forum Discussion
If the streaks are blue then the culprit may be windshield washing fluid. I replace my fluid with clear water only and remember to winterize the windshield washing reservoir by emptying the reservoir before winter.
