Any studies done on different brands of oil filters or comparisons for use with synthetic oil (Mobil-1)?
Thanks for the information and the links to interesting reading on oil filters.Consumer's Reports did one years ago - I don't know if it's been up dated or not. Delco was one of the high scorers, and I think Fram was low, but I don't remember the rest.
Here is a site that lists a lot of the physical dimensions of filters, but does not list the most critical information - filtration and flow properties. http://www.ntpog.org/reviews/filters/old_filters.shtml
It may be nice to know that filter "A" contains 120 square inches of filter material compared to 90 square inches for filter "B", but maybe "B" filters to 2 microns where "A" only goes to 10 microns. Filtration is what you should be concerned about - along with flow capabilities of course. A filter that traps particles 2 microns in size isn't much good if it can't pass enough oil through to satisfy the engine's lubrication requirements.
I use a by-pass set up made by Amsoil. It has one large filter that does the duty of normal filtration and a by-pass filter that filters particles down to 2 microns in size. The principle is pretty simple. The by-pass filter continously filters a smaller protion of the oil and takes about 45 minutes IIRC to filter the entire 12 quarts (I have a diesel). THe regular filter maintains the normal filtration process.
I am not endorsing Amsoil, but I am happy with the filtration system. There are other by-pass filtration systems available. Also, I use nothing but synthetic oil - typically Mobil 1 due to it's availability.
Thanks for the information and the links to interesting reading on oil filters.
I have been using Mobil-1 oil and AC Delco filters, so I guess, I'm not too bad off. I've always been concerned about the effectiveness of oil filters, since a few years back they seemed to get smaller, which in my mind would tend to go along with less flow and less filtration capability.
If you bought the Royal Purple retail, I'm sorry to say, you were ripped off. $60 is a lot of money to be spending every three months just for the oil change, mine costs me roughly $23 and I'm using Mobil 1 full synthetic 5w30 and AC Delco filters, the big pre-shrink size (PF59 I think). If you scout eBay for a while you can find a GM dealer that gives decent deals, I got 12 filters for less than $40 shipped. And oil can be had for "less than retail" if you look...I get my Mobil for $20 a case, used to be $15 but my buddy had to raise prices. Any synthetic is the best way to go in my opinion, as long as it's really synthetic unlike that Castrol crap.I just tried out Royal Purple for the first time and haven't really been able to tell anything so far. It's been maybe 400 miles since the oil change but I don't know. I used a Mobil 1 filter with it. All together it cost me around $60 and as of now I'm not so sure it was worth it