I'm on my 3rd Jag now and its an XF 3 litre diesel with 96,000; have had it for 4 years now. Absolutely love it. I saw the thread about slow fueling and that applies to mine, I did mis fuel about two years ago and since then it takes, yonks, to fill up. I'll look up that yellow thing by the battery later when collect the car, its getting a new cam belt. Wish I'd discovered this site years ago, ah well.