and you save alot of money  

I'm going to attempt my first oil change one of these days . Did you replace the two o rings or use the same ones ? Also is the spring part trickey ?

It is interesting that the cover will blow out otherwise - first picture we saw of that was quite strange

There's a metal tube that the oil slips on toward the engine - small rubber oil goes on  this shaft to seal it - large rubber o-ring fits the cover to seal it - a spring fits in the center of the back side of the oil filter and pushes against the oli filter cover to hold the filter tight against the engine

T handle allen wrench, if youre a giant, use 2 fingers. Youll feel the screw land, then just snug it up a bit. This isnt holding the thing together. You can check them later to see if they need more torque. You cant undo a stripped case w/o a load of hassle.