I see lots of Japanese import camper-type vehicles round here, such as Bongo Friendees etc but no rusty ones.

They may not salt the roads but Japan has a lot of coastline with salt air, I can't imagine they'd prepare the bodies of vehicles for export differently to domestic cars.

Below is an extract from http://www.allansvehicleservices.co.uk/21432/index.html

'WHY DON'T JAPANESE IMPORTS HAVE RUSTPROOFING: The climate in Japan is generally drier than ours. The Japanese don't use salt or grit on their roads, preferring to rely on Winter tyres. This means that the bodywork of an import is generally in much better condition than a UK model of similar age. Apply a liberal amount of rustproofing to help maintain that condition and 10 years from now, it could still be looking as good as new.'

Edited by Auristocrat on 18/12/2012 at 21:31