Maybe I should have been more specific with my reply then if you want to get picky, but please tell me why it is not emphasised as an item of importance to change in this engine, and has been described several times as a 'lifetime of vehicle item'? It's even spoken about around Dunton as a lifetime item, let alone most dealerships I've visited. I know people DO have them changed, but they've been proven to last this far without being changed...