We have run them on two different cars for years, BBC and SBC, and I just bought another for a third car. They work fine, make it easy check for metal. The filter media is not as fine as a paper filter but if it is on a drag car filters are more of a detection device than a necessary item in my opinion. We change our oil soon enough that it could run in my street car with no problem so what is the filter doing? My two cents.
Curtis