The "Oil Easy Wrench" is specifically designed to remove the oil
filter on any aircraft using the Teledyne Continental IO-520 or IO-550
engine. In fact, it is a universal oil filter wrench that works
great on any piston engine airplane! Recommended at the Malibu
Mirage Owners and Pilots Association (MMOPA) maintence seminar!!!
On IO-520's & IO-550's engines, it's the only wrench that can
get between the top of the oil filter and the pressure pump and
still provide enough leverage to remove the old (usually stuck)
oil filter by hand. And because you are able to remove the old
filter without any damage, your inspections of the old filter are
more accurate, without any contamination from more extreme filter
removal methods.