Now I have my 1998 300tdi Defender all fixed, back on the road and running like a dream I want to smarten it up and restore all my exterior trim back to black. So after scrolling through pages on the web I came up with three products 1) Forever black, 2) Wurth Plastic Dye or 3) C4 by GTechniq. Has anyone used these nefore and have opnions on them? Forever Black seems the cheapest at around £17 and Wurth seems to give more for your money (75ml) but it costs £30 + and C4 by GTechniq about the same, but only 15ml! Obviously I want the one which lasts the longest. TIA