It seems Duragloss has now completed the circle and provided a paintwork cleaner specifically for the purpose of preparing the paint for an LSP. Previously, they had cleaner products with sealants that were used for different and very specific purposes. This product hodgepodge was at times confusing and put off some people who wanted more direct and clear cut instructions.
501 - actually made for fiberglass boats but also works very well for cars. This product is also a strong cleaner and as such, recommended for older vehicles.
Could 501 be used as a cleaner and prep for McKee's paint coating? Does it leave any residue (fillers, etc)? How does this compare to McKee's own paint prep polish?