quote:
What part of the story would not be told with a used oil analysis & particle count?
Seriously?
-Whether the ADBV was functioning properly. Which is influenced by the design and materials of construction of the adbv.
-Location of the bypass valve (if that matters to you)
-Design of bypass valve which can influence its reliability.
-Amount of media. Your particle count would not tell you how "loaded" the filter was with debris. Which could affect its potential to go into bypass.
-Thickness of can, which affects "burst pressure"
Cutting open a filter allows you to find true bargain quality filters (Motorcraft) that are similar to Purolator but have silicon adbv's.
I agree that used oil analysis are very important in determining the quality of a filter, but as I said they do not tell the whole story. You can also cut up a lot of filters for the $40 ($20 analysis + $20 particle count) that it would cost for the analysis.
Oh and I found one used oil analysis with a particle count using a Mobil 1 filter. The results were impressive. So who is willing to spend $20 to do a particle count on a $2 ST? On the other hand, I would love to see one on a Pure One or Fram X2. Ugly? I'll do my X2 if you do your Pure One. I have 2K on my X2. I will be changing oil in about 3-4 months.