Originally Posted by Roler
Just out of curiosity: can you change just the oil filter without draining the oil first (want to get rid om my filter (AC Delco Duraguard which turns out to be actually one that is NOT recommended, and just changed the oil only 500 km's ago)?
Or will things get very messy...?
You'll lose a whole oil filter full if you've got a good quality filter with a good anti-drainback valve. If the filter has a crappy anti-drainback valve, you won't lose much cuz it will all have drained back into the oil pan.
Good idea to do what you're doing. Let us know how much oil comes out please.