Originally Posted By: ZeeOSix
Originally Posted By: goodtimes
I think you know Purolator published no microns in the efficiency label for their Purolator brand. Bosch is.
Stainless steel is commonly non magnetic, rare to find magnetic. That's how most shops will do a quick test.
Just the opposite in my experience. I rarely find super grade stainless that is not magnetic. Most have varying degrees of magnetism ... the higher the chromium in the alloy, the less magnetic it becomes.
Originally Posted By: goodtimes
That's why I asked, and if the mesh isn't magnetic, it will be stainless steel, not regular steel. Motorking stated the Ultra has stainless steel mesh. I think we can agree since he said that, it is true.
Did you try the magnet test on the mesh in the Ultra? If it's not magnetic, it still could be aluminum. A touch to a grinder after the magnet test will tell you if it's non-magnetic stainless (sparks) or aluminum (no sparks).
I don't need a grinder to tell if the filter mesh is aluminum or steel. I suggest since you use the Ultra, to check it your way. Jay says stainless steel, I believe it. Machine shops for many decades used a magnet to check if something is stainless. If something looks like steel, put a magnet to it, if it isn't magnetic 99% certainty it is stainless. Common stainless has nickel and higher chromium and is non magnetic. What I said is 100% correct, put a magnet to the mesh. They are using common stainless, not "super grade", mesh in a $10 oil filter. Realize I am retired and have had decades of experience in a well known University research lab, where I had to make a lot of my own fixtures for the projects in the machine shop. I started there in 1974. Not some kid. I am starting to get the picture here. This is it, once again, bye, good luck with oil filters, % @ X, etc etc.....: