Hi All, I haven't had a problem with a rotten egg gas smell, even when driving hard. I don't noramlly have air on recirculate, except when passing the local tip or near smoky diesels! My model is a KXR AWD, manufactured in June 2008. I use Caltex 95 most of the time. I don't use E10. I've driven about 45,000 km, about 75% suburban driving. Merry Christmas everyone. Snowy