OK, I have some concerns about this, I have heard and also read about buying a diesel before the 07 restrictions are in effect. One major concern is the availability of the new ultra-low sulfur fuel. Diesel is already sparadic in location. This splits the fuel into 3 different classifications. High Sulfur (off road) 5000ppm sulfur Low sulfur (current road fuel) 500 ppm sulfur ULS (new fuel for 07 models) 50 ppm sulfur any insight on the logistics of this? Are diesels going to be even more expensive to own and operate? Obviously short term is going to be more cost, but 5 or 10 year cost of ownership, at least that is the only way to justify a diesel anyway unless you just want to show off your loud truck. We run the following 1999 f-350 7.3 psd (diesel) pickup 2000 f-250 7.3 psd (diesel) pickup 2001 k2500 duramax (diesel) pickup 1988 f-700 6.6 ford (diesel) 26000 gwvr dump 1998 c-7500 3216 cat (diesel) 33000 gvwr dump 2005 s-250 (diesel) off road 2006 Kx161 (diesel) off road 2005 L4630 (diesel) off road 2002 4600 (diesel) off road gas equipment blue bird bed edger agri-fab straw blower saws, auger, tillers my gas usage is minimal we are married to diesel fuel. I am getting concerned.