They didn't use so much rock salt on the road back in the day. We use Defenders in a way you wouldn't use an S1, with much higher mileage. Saying that look at truck chassis. You don't see them rotting away and they'll do a million miles. When I look at the rear cross member of a newish Defender the metal looks thin...and the paint finish. I also see them with rust bubbles on what used to be the galv trim. My sons friend parked up his 90 last summer when they were away on holiday. Had a good nose around it and generally speaking it's a well built vehicle but not in the same way as say an S2 I owed years ago. It was built really solid.it's not like for like but the new ones aren't as solid.