Well, the PRV doesn't have lifters. The rocker arms ride the cams directly and operate the valves. There are no lifters to rattle in a PRV no matter what oil filter is used. Also, with the high capacity of oil that the PRV sump provides, the small amount of oil left in the filter is not an issue. I have used these filters on my car and have had zero problems, noise, etc. They work great. I'm sorry that the supply has run out here in N.A. but we will, somehow, survive. Sandor # 3002 --- In dmcnews@xxxxxxxxxxxxxxx, "John Hervey" <john@...> wrote: > > Marc, > As I said earlier the Mann and Mahle are also made in Germany. I haven't > doug into it to see what the spec are, but the are a cross to the 72150. > The Bosch was made in the U.S. but due to quality issues they went back to > Germany sometime about 2 years ago. > Now you know that what DMCH say's about the Purflux was the best filter and > not having an anti drain back was one of the big questions. One of the > DeLorean vendors told me they didn't like to use them because the lifters > would rattle more and longer with that filter. > As far as pressure relief is for the time the filter stopped up and the > pressure can be directed back to the sump. > John Hervey > www.specialtauto.com To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/