Hi there,
I've used Dynax S50 to protect the internals of the chassis rails on my 90. It's available in a 750ml aerosol spray and I used 5 cans. It didn't take too long to do, but make sure you tape up the existing holes in the chassis rails before you start (of which there are many), to minimise the excess S50 spraying everywhere!. I also used Dynax UC for the external chassis welds etc for some additional protection.
There are some previous posts on here about rust proofing as well as on the UK Defender2 website, which also includes a handy corrosion prevention guide;
DEFENDER2.NET - View topic - Corrosion Prevention Guide!
Cheers.
Mark


Reply With Quote
I went with these guys in Brisbane and highly recommend them 
Bookmarks