Turboman
Mab An Gov
Its spent nearly all of its life on a farm and I don't think its been looked after other than scraping it through an MOT every year.
The only reason I suggest Hammerite is because I can get it free from where I work. I've only been using it to cover/seal the welding I've done so far, but I'll look into cover it in something better.
On other news, I've now got all lights working, but just need to fix the front side repeater as its cracked and broken.
Farmers aren't often known for looking after landrovers, I am the exception that proves the rule. But I come more from an engineering/ machinery background than a farming one!
Looking at that chassis, I would also hazard a guess that it has been kept in a coastal location, or at least one exposed to coastal winds. Rots steel like nothing else.
If you get Hammerite free. it should be ok as topcoat, but get a couple of coats of rust resist primer on first, let it dry and slather with hammerite to throw the water.