I recently bought a 2010 Corolla. I've never owned a Corolla hence the possible ignorance expressed in this question! I want to start with a clean slate so I figure an oil change might be good to do. When I searched for a filter I saw both spin-on and cartridge types come up - both claiming to fit the engine. I wonder if this is true, and if so, is one type preferred over the other by the experts here, or is it more a matter of convenience? I've always used spin-ons in my other cars. Seems to me they'd be a little easier to deal with - less messy. I bought a Mobil1 "extended performance" cartridge but can return it for a spin-on if that'll work better. I also took advantage of the latest Mobil1 rebate offer to get 10 quarts of 0-20 synthetic for $45 minus $20 in rebates.