So a short introduction - I bought a 1993 Eurovan MV Weekender 5cyl 5spd a couple of weeks ago that had been sitting for sometime. The body is in decent shape but will eventually need a respray and the top was disgusting! A couple of layers of dirt/mold/grease/sap and whatever else was caked onto the top of the van.
I did some research and bought a couple different products from Amazon and GoWesty. I first started with a soak down and wash with regular car wash soap with a light scrub to clean any basic dirt off. Then brought in the good stuff to get the gunk off.
I went with Davis Industries FSR - Fiberglass Stain Remover and boy did this work great! While reading the reviews some people mentioned that all they had to do was apply softly and let rest for a couple minutes with a quick hose down to eliminate dirt. This method DID NOT work for me as I had to scrub with some microfiber cloths and soft brushes for about an hour.
After the light wash and a first round of applying and letting soak with a wash.
Applying FSR
Results
After the first night of cleaning I feel good about the product and would recommend this to anybody that needs to clean the top of there pop-top. I am going to give it another scrub early next week as I had to order another can of FSR.