Originally Posted By: GeorgeGear
can you describe your test in more detail? I did not quite follow what you did. I am interested
Take care -
I guess you could call it a "test" but more of a relative evaluation for my own use...like the oil filter series I did.
I swore I would never post it here because of the criticism of it's crudeness from people who don't read the posts, but here it is.
Just collected some good "sneeze grade" dirt as I call it from my crawlspace. Hasn't seen a drop of rain since to '50s so when
you blow on a palm full, it turns into a cloud...similar to fine gravel road dust.
Strained out the finest stuff and bagged it.
For each filter:
-I remixed the bag and measured out 8 grams on a powder scale.
-sealed an oil rag over to vacuum screen with duct tape
-sealed a new filter of the cardboard template on top
-let the dirt on with a sprinkle top bottle (old spice container)over about 4 minutes time
-tapped the filter a little with a screwdiver handle until more more loose dirt was sitting in piles on the filter...though the oiled filters did not let the dirt disappear into the filter compeltely, because it sticks in the top layers of media and stays dark looking.
The cleanest rag here was from the Fram TG (factory oiled) and was then reused for the ProDry S (oiled by me...see my previous post on that matter) and stayed clean. That's all. The Totoya OEM kept showing a lot of dirt, more than the regular, dry Fram, even when I experimented with oiling it, it let more dirt through than the ProDry. I was a little dissappointed.
But none of them let any signifiacant dirt show until I tapped the filters lightly...so maybe I am looking at the worst case scenario of a very loaded filter and rough roads?
It is what it is.