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Engine Oil Filter Study

SPECIAL FEATURE:  German Filters

[ Conversion Table | Conclusion | Main Oil Filter Study Page ]
[ AC Delco | Bosch | Deutsch | Fram | Mahle | Mann | NAPA | Purolator | VW ]

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UPDATE:  No new filters will be added to this page.  I will try to finish the Conclusion and Conversion sections at some point.  Have to find those pictures as well...
 

Description

This page concentrates on German oil filters.  Since not all of these brands make filters of the Ford 5.0L type, I concentrated on a very common filter in Audi, Volvo, and VW circles.  For the sake of comparison, I purchased some domestic filters as well.  Also, some of these "German" filters are actually made in the U.S.A.  Specifically, this page compares the following filters:

AC Delco Duraguard PF60
Bosch 72150
Deutsch D484
Fram Extra Guard PH2870A
Mahle OC49
Mann W719/5
NAPA Gold 1342
Purolator Premium Plus L20252
Purolator Pure One PL20252
Volkswagen 034 115 561A

Special thanks go to Rolf Mair for sending me the Bosch, Fram, Mahle, Mann, and VW filters.  The rest were purchased by myself.
 

General Information

See the Engine Oil Filter Study main page for all the details about how the tests were conducted and how to make sense of the results.  Here are the direct links:

Description
Disassembly and Measurements
SAE Tests
Conclusions
 

Conversion Table

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AC Delco Duraguard PF60

This filter is very much like the Deutsch unit, which is similar to the Bosch filter (manufactured by Champion Laboratories).  It has the Bosch cartridge design, but uses a different filter element (similar to other AC Delco elements).  Like the Deutsch filter, the backplate has 8 round inlet holes with one larger than the others.  The AC Delco catalog lists the PF56 as an equivalent filter, but I could not find it to test.
 
Average Retail Price $6
Cartridge Length 3.925 inches
Cartridge Outside Diameter 2.685 inches
Cartridge Inside Diameter 1.625 inches
Cartridge Pleats 55
Cartridge End Cap Type Stamped steel, with bypass and anti-drainback valves
Anti-Drainback Valve Type Spring loaded steel, nitrile seal (bottom of cartridge)
Bypass Valve Type Spring loaded steel, nitrile seal (top of cartridge)
Element Type Paper media, glued seam
Element Length 54.0 inches
Element Width 3.750 inches
Element Surface Area 202.5 square inches
Shell Thickness 0.013 inches
Backplate Thickness 0.108 inches
Gasket Type Nitrile rubber

 

Bosch 72150

I believe that Champion Laboratories is the manufacturer of all american-made Bosch filters.  If the filter is stamped with "Made in U.S.A.", then it is likely a Champion Labs filter.  They seem to make some of the German OEM filters as well.  I kept seeing this unit's filter cartridge in other units, but this may just be a design copy.

This filter has one of the higher surface areas of the group and has a stronger case.  A common theme with these filters is to have the anti-drainback valve built into the bottom of the filter cartridge with the bypass valve built into the top.  Rather than use a diaphram-type anti-drainback valve, these filters use spring loaded steel valve with a nitrile seal.  This is probably the best anti-drainback valve design I have seen, but it does take up quite a bit of room inside the cartridge, which forces the element pleats to be shallow.  The cartridge is held in place by a leaf spring-type spacer.  To make a positive seal to the backplate, a rubber o-ring is used at the base of the cartridge.  The backplate has four large "D"-shaped holes for the oil inlet.
 
Average Retail Price $?
Cartridge Length 3.950 inches
Cartridge Outside Diameter 2.700 inches
Cartridge Inside Diameter 1.625 inches
Cartridge Pleats 76
Cartridge End Cap Type Stamped steel, with bypass and anti-drainback valves
Anti-Drainback Valve Type Spring loaded steel, nitrile seal (bottom of cartridge)
Bypass Valve Type Spring loaded steel, nitrile seal (top of cartridge)
Element Type Paper media, glued seam
Element Length 74.0 inches
Element Width 3.750 inches
Element Surface Area 277.5 square inches
Shell Thickness 0.014 inches
Backplate Thickness 0.118 inches
Gasket Type Nitrile rubber

 

Deutsch D484

Like the Ford 5.0L Deutsch filter, this filter is manufactured by Champion Labortories.  It is similar in construction to the AC Delco, the American-made Bosch, and the other Champion filters.

Although most of the dimensions were the same as the AC Delco, the Deutsch uses a different filter element, which has more pleats (and more surface area).  Like the AC Delco filter, the backplate has 8 round inlet holes with one larger than the others.
 
Average Retail Price $6
Cartridge Length 3.925 inches
Cartridge Outside Diameter 2.700 inches
Cartridge Inside Diameter 1.625 inches
Cartridge Pleats 61
Cartridge End Cap Type Stamped steel, with bypass and anti-drainback valves
Anti-Drainback Valve Type Spring loaded steel, nitrile seal (bottom of cartridge)
Bypass Valve Type Spring loaded steel, nitrile seal (top of cartridge)
Element Type Paper media, glued seam
Element Length 59.5 inches
Element Width 3.750 inches
Element Surface Area 223.0 square inches
Shell Thickness 0.013 inches
Backplate Thickness 0.108 inches
Gasket Type Nitrile rubber

 

Fram Extra Guard PH2870A

Well, what can I say?  It's a Fram in every way, shape, and form.

It has the usual cardboard-endcapped cartridge with the lowest surface area of the group (172.5sqin).  Along with the spring-loaded plastic bypass valve, it has the nitrile rubber diaphragm that seals rough metal to cardboard.  I also noticed that there was very little room between the bottom cartridge end cap and the filter can.  It looks as though it might restrict oil flow between the backplate and the outside of the element, but I imagine that the oil flow would probably push the cardboard out of the way.  The backplate has 8 very small holes for the oil inlet, which may restrict flow somewhat.
 
Average Retail Price $?
Cartridge Length 3.925 inches
Cartridge Outside Diameter 2.625 inches
Cartridge Inside Diameter 1.375 inches
Cartridge Pleats 40
Cartridge End Cap Type Cardboard
Anti-Drainback Valve Type Spring loaded plastic
Bypass Valve Type Nitrile rubber diaphragm
Element Type Paper media, metal seam
Element Length 44.5 inches
Element Width 3.875 inches
Element Surface Area 172.5 square inches
Shell Thickness 0.015 inches
Backplate Thickness 0.110 inches
Gasket Type Nitrile rubber

 

Mahle OC49

This filter has similarities with the Champion Labs unit, but is different enough to lead me to believe that it is not the same manufacturer.  The similarities are that is has the spring loaded anti-drainback and bypass valves built into the cartridge end caps.  The differences are that the bypass valve has no steel plate (it is a thick piece of spring-loaded rubber) and the anti-drainback valve has a wider steel plate than the Bosch.  Also, a coil spring spacer is used instead of the leaf spring and the filter element has a metal seam instead of a glued one.  In my opinion, these differences do not make this filter better or worse; I just pointed them out to show that it is definitely not the same manufacturing process.

The filter element is thin and fairly stiff, but quite strong and has one of the largest element surface areas of the group.  The glue used to attach the end caps to the element is unlike any other I have seen.  Rather than a gooey-flexible type, this stuff is hard and brittle.  Neither better nor worse...just different.  One striking aspect of this filter is the precise spacing of the pleats.  While not especially relevant, it shows an attention to detail.  The filter case is definitely one of the strongest and the backplate has 6 medium-sized oil inlet holes, for plenty of flow.
 
Average Retail Price $?
Cartridge Length 3.710 inches
Cartridge Outside Diameter 2.750 inches
Cartridge Inside Diameter 1.500 inches
Cartridge Pleats 64
Cartridge End Cap Type Stamped steel, with bypass and anti-drainback valves
Anti-Drainback Valve Type Spring loaded steel, nitrile seal (bottom of cartridge)
Bypass Valve Type Spring loaded nitrile rubber (top of cartridge)
Element Type Paper media, metal seam
Element Length 74 inches
Element Width 3.500 inches
Element Surface Area 259.0 square inches
Shell Thickness 0.018 inches
Backplate Thickness 0.132 inches
Gasket Type Nitrile rubber

 

Mann W719/5

This filter also has similarities to both the Champion Labs and the Mahle units.  It has the usual Champion Labs bypass and anti-drainback valve locations and construction, but has a filter element similar to the Mahle unit.  The inside diameter of this cartridge is smaller than the Champion Labs or Mahle, which allows deeper pleats and gives this filter the most surface area of the group (285sqin).  The cartridge spacer is a leaf spring-type, but of a unique design.  The backplate looks just like the Champion Labs backplate, except that for some reason is it not welded or glued to the can.  The can has some "hooks" that attach it to the backplate through the "D"-shaped inlet holes.  After looking at it, I realized that this makes no difference in terms of sealing.  The outside seal is made to the filter can and so any oil that gets between the backplate and the can ends up in the same place that it would if it went through the inlet holes.  Also, this filter has the strongest can of the group.

This filter has "Made in Germany" stamped on the can, which may account for the differences from the American-made Bosch filter (which is mamufactured by Champion Laboratories).
 
Average Retail Price $?
Cartridge Length 3.875 inches
Cartridge Outside Diameter 2.700 inches
Cartridge Inside Diameter 1.375 inches
Cartridge Pleats 59
Cartridge End Cap Type Stamped steel, with bypass and anti-drainback valves
Anti-Drainback Valve Type Spring loaded steel, nitrile seal (bottom of cartridge)
Bypass Valve Type Spring loaded steel, nitrile seal (top of cartridge)
Element Type Paper media, glued seam
Element Length 76 inches
Element Width 3.750 inches
Element Surface Area 285.0 square inches
Shell Thickness 0.021 inches
Backplate Thickness 0.117 inches
Gasket Type Nitrile rubber

 

NAPA Gold 1342

I purchased this filter to get another example from the one of the better domestic oil filter manufacturers.  Like the Ford 5.0L version, this filter is made by the Dana Corporation (Wix).  It has all the usual Wix filter attributes.  These include the two-piece filter cartridge with the metal-to-metal seal between the bypass valve and bottom cartridge end cap.  The bypass valve is sealed to the backplate with the usual diaphram-type anti-drainback valve.  The filter element was Dana's usual material (strong) and has a surface area that is about average.  The cartridge is held in place by a stiff coil spring spacer.  One thing I noticed was that there was very little room between the bottom cartridge end cap and the filter can (like the Fram).  It looks as though it might restrict oil flow between the backplate and the outside of the element.
 
Average Retail Price $?
Cartridge Length 3.675 inches
Cartridge Outside Diameter 2.750 inches
Cartridge Inside Diameter 1.375 inches
Cartridge Pleats 49
Cartridge End Cap Type Stamped steel
Anti-Drainback Valve Type Nitrile rubber diaphragm
Bypass Valve Type Spring loaded steel, nitrile seal
Element Type Paper media, glued seam
Element Length 62 inches
Element Width 3.500 inches
Element Surface Area 217.0 square inches
Shell Thickness 0.014 inches
Backplate Thickness 0.104 inches
Gasket Type Nitrile rubber
Hydrostatic Burst Pressure Unknown
SAE J806 Filtration Efficiency Unknown
SAE J1858 Filtration Efficiency Unknown

 

Purolator Premium Plus L20252

This filter is like most Purolators.  It has steel end caps, but with the Champion-like bypass valve on the top of the cartridge.  The anti-drainback valve is a typical nitrile rubber diaphragm type.  The filter element has many shallow pleats, which results in a surface area (178sqin) only slightly better than Fram.  The inside of the cartridge has a lot of wasted space.  It also has the typical Purolator assembly string.
 
Average Retail Price $4
Cartridge Length 3.875 inches
Cartridge Outside Diameter 2.625 inches
Cartridge Inside Diameter 1.625 inches
Cartridge Pleats 50
Cartridge End Cap Type Stamped steel
Anti-Drainback Valve Type Nitrile rubber diaphragm
Bypass Valve Type Spring loaded steel, nitrile seal
Element Type Paper media, metal seam
Element Length 47.5 inches
Element Width 3.750 inches
Element Surface Area 178.0 square inches
Shell Thickness 0.012 inches
Backplate Thickness 0.111 inches
Gasket Type Nitrile rubber
Hydrostatic Burst Pressure Unknown
SAE J806 Filtration Efficiency Unknown
SAE J1858 Filtration Efficiency Unknown

 

Purolator Pure One PL20252

This Purolator has the same construction as the Premium Plus, but with more pleats of the Pure One element.  It also has a silicone rubber anti-drainback valve and a PTFE-treated gasket.
 
Average Retail Price $6
Cartridge Length 3.675 inches
Cartridge Outside Diameter 2.750 inches
Cartridge Inside Diameter 1.375 inches
Cartridge Pleats 62
Cartridge End Cap Type Stamped steel
Anti-Drainback Valve Type Silicone rubber diaphragm
Bypass Valve Type Spring loaded steel, nitrile seal
Element Type Paper media, glued seam
Element Length 58.5 inches
Element Width 3.750 inches
Element Surface Area 219.5 square inches
Shell Thickness 0.012 inches
Backplate Thickness 0.111 inches
Gasket Type Nitrile rubber, PTFE-treated
Hydrostatic Burst Pressure Unknown
SAE J806 Filtration Efficiency Unknown
SAE J1858 Filtration Efficiency Unknown

 

Volkswagen 034 115 561A

This filter has the same construction as the American-made Bosch filter (Champion Labs), and also appears to have the same filter element.
 
Average Retail Price $8
Cartridge Length 3.950 inches
Cartridge Outside Diameter 2.700 inches
Cartridge Inside Diameter 1.375 inches
Cartridge Pleats 75
Cartridge End Cap Type Stamped steel
Anti-Drainback Valve Type Spring loaded steel, nitrile seal
Bypass Valve Type Nitrile rubber diaphragm
Element Type Paper media, glued seam
Element Length 73 inches
Element Width 3.750 inches
Element Surface Area 274.0 square inches
Shell Thickness 0.014 inches
Backplate Thickness 0.118 inches
Gasket Type Nitrile rubber
Hydrostatic Burst Pressure Unknown
SAE J806 Filtration Efficiency Unknown
SAE J1858 Filtration Efficiency Unknown

 

Summary

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See the AC Delco, Champion, Fram, Purolator, and Wix sections for information on how to identify these manufacturers by looking at the backplate.  The tell-tale signs are always there.
 
 
 
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This page was written and is maintained by Russ W. Knize and was last updated 06/20/00. Comments? Questions? Email minimopar@xoommail.com.

Copyright © 1996-2000 Russ W. Knize