A recent post has reminded me of a thought I had whilst doing the last oil change.
Why is the 16v oil filter so small?
Is it just for cost reasons? Doesn't seem to be a space issue.
Is there any advantage/disadvantage in finding a larger filter? I would have thought that a larger filter element wouldn't restrict flow as much and wouldn't clog as fast, maintaining pressure where it's needed (bearings etc) and reducing it where it isn't (pressure drop across filter).
Just leave the standard one in there!! The flow rate and filtering abilities will have been tested by AR... I doubt that you picking a bigger one at random off the parts shelf will give better results!
It's an interesting point. I wonder if it's at all connected with the number of crankshaft failure's which have occurred with the 16v engine. It's interesting to note the number of 155s, 146s and 156s appearing on Ebay with either engine rebuilds or being sold with knackered bottom ends.