Howdy all,(feeling midwestern today) Received my 2 Purolator PL10241 Pure One's today from the Amazon sale.($5.48 for 2 after rebate) The rough coating is now very smooth and did not flake off at all. The coating is very evenly applied and the particles seem of a more uniform size than the first ones I received shortly after the blue to ucky yellow change. Made in the USA and the threads were free of debris. Much better QC IMO.