now set the filter housing upright and pull out the filter.
drain out the housing.
now take your pliers and remove the o-ring from the filter housing.
now grab your new o-ring and filter. lube up the new o-ring with new oil. place it in the filter housing with the tab facing up for easy removal.
place the filter in the housing. push the filter down and it should settle in place.
clean the area where the filter housing will go.
now you can add a little oil inside the filter and housing or not. some say to do it, other say not too. your call.
now begin to screw the filter housing back into place.
reattach the retainer.
now re-install the drain plug(this should be replaced every so often. usually every 2-3 oil changes.
remove the oil filler cap.
begin adding your prefered oil. in my manual it says the 2.5L take 6.3qts of oil.
put the oil cap back on and start the vehicle. check for leaks.
turn vehicle off and check the oil level
once everything is correct, re-install the belly pan.
lower vehicle to the ground and enjoy your happy vw.