This is what some AMSOIL literature says "• Absolute Efficiency Filtration @ 15 Microns Per ISO 4548-12 " Some other literature says "Near-perfect absolute efficiency rating" This is why the 98.7% at 15 microns per ISO 4548-12 is given. Industry standard data that is often hard to find with other filters, likely because they do not perform as well. AMSOIL even prints the data on every box and filter and compares to "Conventional brand Name Synthetic Blend Filters" at 82.3% and "Conventional Brand Name Paper Oil filters" at 39.39% . Don't you wish other companies would step up and do the same?quote:Originally posted by RobertC:quote:Beta = 75 at 15 microns
So not a 15 micron ABSOLUTE as you said earlier.
Again, this is what some AMSOIL literature says "• Absolute Efficiency Filtration @ 15 Microns Per ISO 4548-12 " Some other AMSOIL literature says "Near-perfect absolute efficiency rating " This is why the 98.7% at 15 microns per ISO 4548-12 is given. Industry standard data that is often hard to find with other filters, likely because they do not perform as well.quote:That's a good filter, but now I am at the part that turns me off to Amsoil.
And I think if you do it once, you'll do it again. (not you specifically, a global you)
why claim an absurd 15 micron absolute rating when you have data that says a perfectly fine B75 at 15?
The whole industry relies on the 4 ball test as a screening tool. It frequently correlates with engine wear tests as seen in numerous papers when comparing similar oils. And as seen when BP/Castrol and Ashland Valvoline saw 4X and 8X less engine wear than Mobil 1, which correlated to AMSOIL's 4 ball wear test. The 4 ball wear test is only 1 test AMSOIL uses to compare oils. You need to look at the data sheets, white papers, and other comparisons. I would rather use a well formulated oil that has better 4 ball wear results than one not formulated as well that has poorer 4 ball results.quote:Why rely on a cheap screening test, 4 ball, as a basis for suitability when you have ngine run data that says it is better than some or even most?
quote:My opinion, cherry picking to get tho the top of amsoils cherry picked list of attrtibutes.
At these levels of hyperbole and obfuscation, I have to wonder what is missed bu those without all of the raw data.
No one in the industry has ever proven AMSOIL of false data or claims for 38 years. No oil company has ever shown their oil to be equal to or superior to AMSOIL.