Advance Auto is running a deal right now that's pretty good too.

$26.98 for five quarts of Mobil 1 AND a Mobil 1 oil filter.

I grabbed a filter for my VW GTI and five quarts of 0W-40 M1. I typically pay $6.00 or so for the Mann/Mahle filters I use for my GTI, so I figure I'm in around $4.20 or so for each quart.

I don't know if there is a Mobil 1 filter for the Crossfire.