You might also consider contacting the top manufacturer Click here to visit Haartz Corp's website.
 

I recently purchased the RaggTopp foam cleaner for my white vinyl top. I must say it is cleaner, but not bleached stark white like I wanted. The cleaner does work very well and I would recommend it highly to the rest of you "other" color guys. Understand, it cleaned very well, but doesn't make it white. You can order it from www.autofanatics.com.

I wrote to the owner and he sent me a complimentary bottle of the spray cleaner which I have not used yet. The foam is a citris based cleaner and smells like oranges. The spray is something different and I am anxious to try it. He did mention the spray is a higher PH, so I am assuming it is stronger.

Incidently, after I used the foam and was unsatisfied, I tried the 4oz of bleach and 2 oz of cleaner in 1 gallon of water trick. It came a little cleaner on the front of the top. Not sure why, maybe because it doesn't rub as much as the sail panels do when folded? Anyway, I will be trying the spray this weekend, and if that doesn't work I am going to try Oxy-clean. (At this point, I am thinking that the spray cleaner is not going to bleach it white, so it may be time for something drastic). Then I might try X-14, but I am afraid that will hurt the clearcoat so that is a last resort. Maybe the top will never be white again.

I have to agree with the preventitive maintenance. If the previous owner had done ANYTHING to maintain the top, I wouldn't be going through this. I also bought the RaggTopp protectant (sealer) which I haven't used yet(because I don't want to seal it yet till I get it white ) but feel confident that will work well.

Interesting how the white tops are vinyl and the other colors are cloth...

Jason

P.S. I want to thank the owner of this UBB for giving us vert' guys a place to chat.