I have just bought myself a 96 TDI disco , im looking forward to finding out more about them ..

 

Welcome, start by getting the free download below of all the tech, electrical, and body repair manuals. In the Discovery 1 section of the forum you will find a technical section at the top, lots of listings like things to do at 60,000 miles, how to fix certain problems, how to substitute some parts, etc. Older radiators may need to be serviced (acid flushed, rodded out by a shop). The older Discos have copper/brass radiators and can be reworked usually cheaply.