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When browsing the web I found some interesting
sites on oil filters. I learned that they vary a lot in
quality, and many are the same things marketed under a
different name. First I saw a good site that compared
filers for Ford
5.0L cars and this one for Preludes.
Originally I thought that my Toyota filter would be one
of the best of the general brands cus they wanted their
cars to last. But then I tore it apart, and compared it
to the numbers from that web site. Even after adjusting
for the differences in size I found the Toyota still on
the bottom of the list. Then I found another site that
did quantitative
tests on filtration, and the Toyota filter performed
deplorably. So I decided to get a variety of filters made
for my car and do a more fair comparison. I am able to
take a variety of measurements on each filter but I am
not able to do actual oil flow and particle filtration
tests which is the real measure of any filter. So consider
these numbers a starting point to base your decision on.
If you don't see a filter you are interested in you can
send it to me and I will tear it apart and add it. Be
aware that filter construction may change, like the MR2
data was from 1995, so depending on when you are reading
this it may no longer be valid, but I hope it is helpful.
| Description |
Type |
Material |
Folds |
Thick(cm) |
Width(cm) |
Length(cm) |
Area(cm2) |
Purolator
PureOne
(PL10241) |
1 |
Micronic |
63 |
0.085 |
5.8 |
147.5 |
855.5 |
Toyota USA
(08922-02011) |
1 |
|
53 |
0.095 |
5.8 |
124.0 |
719.2 |
Fram
Extra Guard
(PH3614) |
2 |
Synthetic glass & cellulose
|
41 |
0.090 |
5.8 |
118.0 |
684.4 |
Penzoil
(PZ-21) |
2 |
|
40 |
0.085 |
5.8 |
114.5 |
664.1 |
ACDelco
Ultraguard Gold
(UPF53) |
3 |
Synthetic fibers |
36 |
0.050 |
5.7 |
95.4 |
543.8 |
STP
(S3614) |
3 |
|
61 |
0.070 |
5.8 |
153.7 |
891.5 |
Bosch
(3330) |
3 |
FILTECH |
55 |
0.085 |
5.7 |
135.8 |
774.1 |
Mobil
1
(M1-102) |
3 |
Synthetic fibers |
54 |
0.095 |
5.7 |
132.8 |
757.0 |
K&N
(HP-1002) |
3 |
Resin impregnated filter media |
61 |
0.065 |
.5.7 |
153.3 |
873.8 |
Toyota Japan
(08922-02004) |
4 |
|
84 |
0.090 |
5.5 |
217.8 |
1197.9 |
There were basically 4 different designs. The one from
Toyota made in Japan was the only one that had the filter
folded in a flower pattern rather than a star pattern
so they were able to fit much more material in their filter.
The 'Type 1' filters have 7 rounded-rectangle holes on
the bottom with the long axis along the circumference
and the numbers '3', '4', and '16' stamped on the bottom.
The 'Type 2' filters can be identified as bottom has 8
holes that are elliptical and equal size with the longer
axis on the radius from the center. The 'Type 3' filter
bottom has 8 or 6 holes that are round, and the bottom
is a smooth shape with one hole being bigger than the
others, all have 'AA' stamped on them. Type 4 is the filter
from Japan and I don't have enough to tell what features
they have in common. You can get more details on the internals
of these filters at the Mini-Mopar
and Prelude
oil-filter sites I mentioned before. While the internal
construction seemed to be shared, the quality and quantity
of the filter paper was quite different. There are numbers
for the different filters for how efficiently they filter
but the tests are run by the manufacturer so I am not
sure how you should interpret them, and they are just
a general number not for the one specific to our car.
| Description |
SAE J806
|
SAE J1858
|
| Single Pass |
Multi Pass |
Single Pass |
Purolator PureOne
() |
99.7% |
96% |
86.1% |
Toyota USA
() |
|
|
|
Fram Extra Guard
() |
96.2% |
|
|
Penzoil
() |
94% |
|
|
ACDelco Ultraguard Gold
() |
|
|
|
STP
() |
|
|
|
Bosch
() |
98% |
93% |
|
Mobil 1
(M1-301) |
98% |
95% |
|
K&N
() |
|
|
|
Toyota Japan
() |
|
|
|
|
