Cowboydoc,
Your sure right about rubber garden hose, but vinyl hose works just fine. It's a lot easier to find then SAE J1527 type A-2 (high nitrile), and a whole lot cheaper.
Al
Edit: I should have qualified rubber and vinyl.
Natural rubber and diesel hate each other, rapid deteriation. Neoprene rubber and diesel get along pretty, good minor discoloration. Vinyl (PVC) is excellent with diesel.