Not sure about the oils, but the Mobil1 filter recently outperformed its Amsoil counterpart in a comparison of particle counts:
http://forum.miata.net/vb/showthread.php?t=328401 -Bryan --- On Thu, 5/7/09, Aleksandr Milewski <[email protected]> wrote: From: Aleksandr Milewski <[email protected]> Subject: Re: Amsoil any good? To: [email protected] Date: Thursday, May 7, 2009, 10:41 AM Blake Thompson wrote: > probably overkill for a daily driver. I use royal purple or amsoil, > both seem good for high demand stuff, red line is not up to my standards Anyone have an objective test data on this stuff? My uninformed biases are that Amsoil has gone downhill over the years, Mobil 1 has gotten better, and Redline has always been fine. My direct experience with Royal Purple was horrific. I put it in before a track weekend and changed it out on Saturday night. I've never heard so much lifter noise from a Miata engine in my life. So... is there any good data from third party labs out there? -Zandr _______________________________________________ Miatapower mailing list [email protected] http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower
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