OK, I hit 6,000 miles and did my first oil change myself (the first was a freebie from the dealer where I purchased tha car). My dealer wanted $19 for the cartridge filter on the '06 V6 Sonata WITHOUT the O-rings (wanted another $2 for the 2 O-rings). A total of $21. So before purchasing I called another dealer which actually happens to be closer to my home, but in a pretty bad area. Anyway, they quoted my $6.82 for the filter AND the O-rings. However, when I got there, we found that he apparently made a mistake and it was acutally $10.50 for the kit. Still much better than the other dealer. He also threw in the washers for the oil drain plug. I bought two kits from him for less than one would have cost at the original dealer. The oil change was really a piece of cake. I really like the canister filter. Much easier than having to lay on your back and try to crank the thing off with a filter wrench. The only extra step is working to get the old O-rings off the spindle. The tiny one was particularly annoying, but I managed to get it with a pair of needle nose pliers. Putting the new O-rings on was easy. I did need to add a full 6 quarts of Mobil 1 to get it up to the full mark on the dip stick. It cost me $30 for oil as I was unable to find a sale. I will be watching the sale fliers in the future and probably buying by the case if I can. Anyway, just thought I would share. Sorry for the long post. Eric