Does anyone know for certain if the filters sold by the Mazda dealerships use micro-glass or if they're made with paper? I just did an oil change on my daughter's 2011 2.0L, and am trying to figure out how many miles to push that Mobil1 0-20 syn oil. Based on everything I've read about the stuff, it can go big miles, but I'm not at all sure about the filter. Haven't found any info online, and the parts guy didn't seem to want to offer an opinion about what he was selling

 

Best bet if you want to figure out actual OCI's is get an oil analysis kit from blackstone labs. The kit is free, the analysis is around $25.