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303 Convertible Top Cleaner

by 303

We Say

303 Convertible Top Cleaner utilises very clever colloidal technology to safely lift dirt and grime from fabric and vinyl convertible tops and tonneau covers. Although this form of cleaning technology is relatively uncommon and tricky to understand (a full explanation is given in the description section), in essence it means that the cleaning action is the result of a physical process rather than a chemical reaction. As a result, intensive cleaning can be performed without the need for strong chemicals, which makes 303 Convertible Top Cleaner the safest cleaner on the market today for both classic and modern convertible tops.

Key Features

Agitation RequiredYes(See How To Use)
Cleaning Strength5/10(Compared To Others)
DilutableNo(Ready To Use)


303 Convertible Top Cleaner comprises a homogeneous blend of colloidal sequestrants, surfactants and hyper-wetting agents that form highly-active microscopic particles when combined together in solution. These particles repel one another but actively attract other molecules, which enables them to gently break down grease and grime and lift it into solution. Once suspended, such soiling cannot recombine or become redeposited, and can be easily rinsed away. Compared to products that make use of strong cleaning chemicals, 303 Convertible Top Cleaner is safer for delicate surfaces and less harmful to the environment (it is 99% biodegradable).


More Information
Agitation Required Yes
Chemical Basis Water-based
Cleaning Strength
Dilutable No
Maximum Dwelling Time 10 minutes
Size 473 ml
Suitable For Fabric and vinyl surfaces
pH 9 (alkaline)

How To Use

303 Convertible Top Cleaner comes pre-diluted to the correct strength for safe use on all fabric and vinyl convertible tops, and should thus be used neat. For best results, we recommend that it is sprayed on liberally and then agitated thoroughly using suitable brushes or a non-linting wash mitt (for fabric tops our PB Cleaning Brush works well, while for vinyl tops a Meguiar's Microfiber Wash Mitt is more suitable). This will produce a slightly foamy lather, which may discolour as any soiling is progressively released. The lather should then be rinsed away with an open-ended hose and the convertible top then left to dry fully before any protection is applied.