birdsong

I found <a href="http://minimopar.net/oilfilterstudy-german.html">this oil filter study</a> while looking for something before. It's done by the same guy who did the oil filter study with like three dozen filter types. Anyway, he looks at basically all the filters he could find that fit many German cars (including ours).

BigRonsAudi

basicly its says VW fliters are the same as bosch in quality

markbradford

Mobil1 M205, and I'm sticking to it.

turboprincess

the filter I have has a B at the end, not A. If I remember correctly, they discontinued the A and replaced it with a lower backpressure more expensive B version, at least that's what the parts guy told me about a two years ago. The B version is the one with the 30,000km or 2 year stuff written on the side, the A did not have this.

ex-quattro PETE

which actually measures the flow of each filter, not just cutting them up and looking what's inside like the other studies did.

They're nowhere near finished however, but some initial observations can be found in this thread:<ul><li><a href="http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=6;t=000513">http://theoildrop.server101.com/ubb/ultimatebb.php?ubb=get_topic;f=6;t=000513</a</li></ul>

markbradford

True or false: Flow is directly inversely proportional to filtering capability.

turboprincess

The people with K&amp;N filters should answer this.

ex-quattro PETE

The higher the flow, the less filtering occurs - the oil just runs through the filter.

The lower the flow, the more filtering occurs.

However, you do not want to restrict the flow too much by filtering every little micron of dirt to the point where practically no oil gets through the filter.

Some filters have the by-pass valves that just let the oil through without filtering to help oil flow, especially when oil is cold.

At least that's my understanding.

turboprincess

point is, but proportional to Area no doubt.

ModifiedA4

True if you hold the filter size constant.