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- Path: sparky!uunet!interlan.InterLan.COM!powell
- From: powell@interlan.interlan.com (Glen D. Powell)
- Subject: FRAM filters
- Message-ID: <BxGwux.GC1@Interlan.com>
- Sender: news@Interlan.com
- Organization: Racal Datacom, Inc., Boxborough, MA (1-800-LAN-TALK)
- Date: Mon, 9 Nov 1992 21:25:45 GMT
- Lines: 54
-
-
-
- Reprinted from the November '92 issue of _european car_ magazine
- and is a "side bar" to "Project 924", a well worn 924 that they
- are rebuilding.
-
- page 53
-
- Fram oil filters
- ----------------
-
- For the last several years, we have recommended Fram Wear Guard oil
- filters because of the protection they afford automobile engines. Now,
- Fram has come out with an improved oil filter, which goes by the name
- Extra Guard.
-
- Fram filters have always had good single-pass efficiency ratings.
- The higher the single-pass efficiency, the more particle will be removed
- from the oil each time the oil passes through the filter. Screen type
- surface filters have poor single-pass efficiency, while depth filters
- (such as "toilet ((no, not toyota, ed.)) paper" filters) generally have
- high singel-pass efficiency. During Fram's on-going testing program, they
- determined that single-pass efficiency is one of the best ways of
- determining filter effectivness. Thus, the goal was to better their already
- good single-pass efficiency.
-
- The trade-off is that as single-pass efficiency rises, restriction often
- rises, too. Thus, a screen-type filter (when clean) offers little restriction,
- while a "toilet paper" filter is very restrictive.
-
- To increase single-pass efficiency while controlling restrictiveness,
- Fram switched from their highly evolved resin-coated cellulose fiber
- element to a hybrid element made of glass fibers and resin-coated
- cellulose fibers. The coated cellulose fibers give the element the strength
- it needs (very omportant in Volkswagen applications, as we have learned),
- while the glass fibers act as barbs to catch particles. New construction
- techniques give the Fram Extra Guard filter the characteristics of both a
- surface filter and a depth filter.
-
- The result is an increase in single-pass efficiency from 92.4% in the
- Wear Guard series to 96.3% in the Extra Guard Series, with no increase in
- restrictiveness (both filters are rated only 3 psi pressure drop).
-
- Project 924 may have been abused in the past, but from now on it gest
- nothing but the best.
-
- -glen
-
-
- --
- Fundsalo Racing--73 CP RA IV 455HO Firebird GTO, 85 Quattro, 86 4000CS Quattro
- The Few..... The Proud..... The Concurrently Executed.....
- Ex-Alliant, SCCA/NER, NESCC, NRA Life, GONH Life
- Don't buy japanese *ANYTHING*
-