I sprayed the underside with AFC 50 taking care to protects & degrease the brakes. A bit messy but Krazy Horse tell me it is the best way to protect the underside. Time will tell.
ACF-50 is great stuff. I've used it for years on classic Defenders, off the back of a recommendation from a chap who does vehicle corrosion protection for a living, and, in my experience, it does work well.
