Ford Mustang Shelby GT500

The preservation programme standard

Every car follows the same six-stage programme, with the work paused for your decision whenever the condition changes the scope.

Pre-inspection: the first conversation

With the vehicle prepped and the body wrapped, the underside is fully inspected and documented. The same photographs and walkaround video we work from are sent across, along with our recommendations – what requires treatment, where and why. No work begins until everything is reviewed and agreed.

What initial blasting revealed

After initial blasting on key areas, this is what we found. Across the arches, deep-set corrosion sat hidden under failing underseal – the kind that turns from surface and pit corrosion into structural rot if left another year or two. Across the body pans, the original factory black had failed in patches, with red oxide showing where paint had thinned to nothing.

Applying Dinitrol to the arches and tank

Across the arches and the fuel tank, condition demanded encapsulation rather than visibility through clear protection. The arches' failed aftermarket underseal and the tank's paint failure both called for a finish that locks moisture out completely. After full multi-stage rust treatment to neutralise the active corrosion and an epoxy foundation laid for adhesion, Dinitrol 4941 black went on across both areas – visible in the arch close-up and integrated into the wider underbody finish.

Dinitrol is touch-dry, durable and OEM-style – significantly more durable than wax-based finishes in vulnerable zones like these. In this application it is a 7-year protection system, with bi-annual preservation inspections to confirm condition but no top-up needed in normal use.

Brown wax applied to the rear running gear

Across the rear axle, differential, rear shock area and surrounding ironwork, the original black had thinned to bare silvery metal in places. Clear wax over this would have done the protective job but kept the bare-metal patchwork visible – making the components look thinned and worn rather than properly preserved. Brown is the better look here: Bilt Hamber Dynax UB adds back the depth and contrast where the original tone had gone, without hiding what is underneath.

The original red shock body was left clean and untouched as a period-correct part to preserve. UB is a wax-based finish: we would recommend a top-up assessment around 18–24 months, with the bi-annual preservation inspection picking up anything that needs attention before then.

The final outcome

Across every area treated, the result is a vehicle whose underside is now properly preserved – structurally and visually. Front geometry hardware clean, treated and protected. Body pans touched in with exact-match black to retire the failed factory paint, then sealed under Dynax UC clear so the metal stays visible through the finish. Side profile coherent from one end to the other. Tank and rear underbody encapsulated where condition demanded it.

The booked clear wax is now part of a tailored hybrid system that works for the condition we found, supported long-term by the bi-annual preservation inspection – a documented underside, treated to neutralise active corrosion and protected with finishes chosen area-by-area for what each one needed.

Treated. Protected. Documented.

The vehicle arrived needing help. It leaves fully preserved – every corroded area neutralised and sealed with the right protection for that area. The programme is documented and shared with the client throughout, and the plan adapted when the condition required it. Preservation does not end at handover: we remain available long after for advice and annual inspections.