Comma Hyperclean

In terms of millilitres for your money, this offering from Comma beat all but the buy-in-bulk Meguiar's. However, even this is eclipsed by the five-litre bottle of Hyperclean, which is also available. The product struggled onour test sample, proving ineffective in the soak test andlittle better with light brushing. Baked-on oil required serious agitation to remove.