I recently used 303 cleaner and guard to clean and treat my black convertible top. Cleaned the whole top with no issue.

When it was time to treat/seal the top, at first, I accidentally bought a one ounce bottle of 303 and then used the whole once on just less than half the convertible top.

Then I ordered a large spray bottle and did the remaining areas of my top with less saturation.

NOW, the areas I treated with the one-ounce bottle have a slightly brownish discoloration right along the lines where I sprayed the treatment.

Will this wash out eventually?? This car has gone 14 years without a single blemish, I'm going to be really pissed if the top is now discolored!

Thank you as always!

 

I've had excellent results with the Renovo products. I would order both the cleaner and the Reviver. The cleaner to remove any pre-existing waterproofing and the Reviver to seal and color.

Convertible Car Care by Renovo - Soft Top Cleaning Products

 

This is unusual in my experience with 303 products.

Call the folks at 303 and see what they say. I'll bet they have an answer and will be eager to solve the problem.

 

Thank you all for your replies. I spent some time cleaning the seemingly discolored area, using the 303 multi-surface cleaner. It looks like the issue has improved markedly.

I assume the problem was the fact that I initially purchased a 1 oz. container, which does not spray very effectively. I therefore ended up massively saturating part of the convertible fabric.

Looks like a light coat is better to start off.

I think this issue is resolved, so readers shouldn't take this as a criticism of the 303 product line! The cleaner and guard have been great otherwise.