Your wrong. Go take a look at your so called corrosion protected new car. Things i have pointed out before so i won't repeat them here.
The warranty you talk about take a look at the conditions. For one its corrosion from inside out only.
Maybe I've read it wrong but won't waxoyl just prevent corrosion from the inside out only as well?
Not if you put it on the outside of the box sections(that VW only prime on the outside).
VW only put waxoyl on the inside of the box sections, I wonder why they do that
You want to know another upside of waxoyling?
If you ever need to replace a component. Bottom ball joint, track rod end, damper, drop link, CV boot etc you can easily get the bolts loose as they have not rusted solid.
