G'day Guys, A couple of quick questions... I'm having some trouble finding a 'Good Looking' diesel fuel filler cap and neck. The only one I've found in my price range is the Fiamma water filler cap which is lockable (Good unit) - Problem is that its plastic! Does this matter?? Will diesel effect the plastic? Where can I find a reasonable, lockable filler that looks good and can handle diesel? Your assistance would be appreciated Cheers Wazza