found a cleaner for white tops...

[shaft]

Tilex mold & mildew. It works pretty good. Some of the grease stains are still there but the top looks almost new.

[VIBRED93VERT]

I use Castrol Super Clean diluted in water, rinse the top. Then I use a big brush I got from O'riley's and scrub the top. This works amazingly well. Then I wash my car with car wash, dry it off. Let the top air dry. Apply 303 Protectant with a terry cloth applicator pad evenly. This repels dust, dirt, bugs, etc and prevents 100 UV slow fade, will make it look brand new and protect it better than any other product! It was developed by Nasa for use on Spaceshuttle exteriors, its great stuff!