Fusionofideas hasn't described the details of that particular situation yet, but I can tell you that there have been many reports of Mazda 2.3's engine blowing out. Reason? A lot of do-it-yourselfers and quick lube places have been re-installing the oil filter incorrectly after an oil change and it leaks or blows or something. With no oil, you all know what happens to an engine. Again, I'm not sure if this is the case with Fusionofideas' car, but I know of at least one Mazda3 owner having this happen (and several Mazda6 2.3l's).
So a warning to all, if you're doing it yourself, be VERY careful and check for leaks after an oil change. Otherwise, bring it to the Mazda dealer to do (it's only $26.95 here in Canada, which is competitive with the quick lube places, especially after they add any 5W-20 premiums). Or, you can try getting the adaptor to make your 2.3l use the typical spin-on type filter. See this link:
http://gcubed.sytes.net/gcubed/oilfilter.pdf