In a message dated 9/1/99 3:41:03 PM Pacific Daylight Time, sbigelow@sprint.ca writes: > What on earth is "tuff guard"? If you go to Shucks or any autostore, there is a model that is called Tuff Guard. It is better than the teflon model one. It has 2 layers of protection and it keeps the oil in when it isn't running. I think its one of the best oil filters I used. Jason C 89 200t10v Redmond WA