Another task to cross out from the to-do list. Puma was taken for an underside wash and inspection at the local dinitrol centre, the same place where dinitrol was applied 21 years ago when it was new. I was impressed how clean the car is from underneath, a true testament that that stuff really worked. I also bought the car with the rear arch liners removed, not sure how long it's been without but that probably helped as well as it's easier to just powerwash the arches and not having the mud, water etc. trapped in the liners.
Following the wash and inspection, they re-applied some dinitrol where necessary on the underside and in the cavities. All in all, it costed me 60 euro, worth every penny.
Mechanically, the car also had almost all its issues fixed. In the end, it had new front shocks, top mounts, stabiliser drop links, both engine mounts, lower gearbox mount, ARB bushes, heater control valve, rear brake flexible pipes, battery, AC re-gas. All items replaced (except the battery) were genuine ford so probably they were never replaced before. Feels newer than my mum's 2012 fiesta on the road.