Only pre-98's had hydraulic lifters. Your 2000 has solid lifters just like the Focus.
Double check your oil level. If it continues, go get a cheap oil pressure guage. Test it on a cold start. You should built some pressure immediately. Starving your head for oil is bad.
If it is really as loud as a deisel, you should be VERY concerned.
BP
Last edited by ButtonPuncher; 03/07/06 04:38 AM.