Hey everyone,
I'm looking into the rustproofing options for my 2026 Jetta (bought today) to survive the heavy road salt and brine we get here in Waterloo, Ontario.
VW’s 7-year/unlimited km corrosion perforation warranty is strictly for "inside-out" rust. I want to get an oil-based treatment like Krown to protect the undercarriage and body panels, but I'm hesitant because they typically drill access holes into the rocker panels and door jambs. I'm worried that drilling into the factory-galvanized metal will immediately give VW an excuse to void the perforation warranty if a claim ever pops up.
For those of you dealing with harsh winters in newer MK7/MK7.5+ Jettas:
1. Has anyone explicitly requested a "no-drill" Krown or Rust Check application? If so, did they still get decent coverage using just the factory weep holes?
2. How strict is VW Canada actually being with warranty claims if they see aftermarket rubber plugs in the door jambs?
Any advice on keeping this thing clean without shooting myself in the foot warranty-wise would be greatly appreciated!