As promised--and yes, after all this time--I'm providing the results of the PC test I had done on the oil used along with a Royal Purple 10-2808 filter. It really did take all this time to accumulate enough mileage. I short-tripped exclusively, which I expect is harder on the oil and the filter.
I went 2,600 miles this time, because for the two aforementioned PC tests, I went 2,500 and 2,700 miles, so I figured I'd split the difference. Having the oil in use all this time has been driving me nuts, because I subscribe to the notion that short-tripping necessitates performing an OC by time, not by mileage. I really should have changed it back in November--about three full months ago.
The FilterMag was in place, exactly as before. The oil used was Valvoline SynPower 5W-30 (SN). As I mentiond in
a previous post, I tried to find SM SynPower, but could not.
The results:
Royal Purple 10-2808
Mileage on oil at time of testing: 2,600 miles
ISO Code (3): 18/17/15
>= 2 Micron: 3535
>= 5 Micron: 1309
>= 10 Micron: 362
>= 15 Micron: 140
>= 25 Micron: 33
>= 50 Micron: 3
>= 100 Micron: 0
The results speak for themselves. I will not be purchasing any more RP filters. I remember some other PC tests posted by another forum member which indicated that the RP filter produced lackluster results. I didn't believe it then; now, I do. I'm a bit disappointed.
I have no plans to perform more PC tests. Also, my recent absence has been entirely due to my own choice. I expect this to be my last post on this forum, and I don't plan to check for replies. (I don't mean that in any dismissive or otherwise offensive way whatsoever.)
The test results shown for this test are taken from an email sent by Blackstone Labs. I will only post again if the hard copy report I get in the postal mail disagrees with this data, which would indicate that they made a typographical error. (The first two sets of results have been checked against their respective hard copies already.)
I hope this has been helpful.
Thank you.
Goodbye.