Re: 2005 Mercury Mariner Transmission
Hmmm. I can't find a specific filter for either the 2.3 or 3.0 engine. I can't say if I've ever heard of a filter being 'internal'. I know Ford is starting to offer 'lifetime' filters on their newer vehicles, from the air filter and in a few years...probly an oil filter!
Still, if no one else here can give you a solid answer you can always contact TWO dealerships close to you. If they both give you the same answer then at least you'll be certain as to the answer.
'11 Ram Quad Cab 4x4 SXT 5.7L HEMI (stock); 48,500m
'06 Pontiac G6 GT 3.5L 220hp; 64,000m
'12 Chrysler 200 Limited 3.6L 283hp; 28,000m
'99 Taurus 3.0L 2V Vulcan 145hp; 154,300m - Traded
Amsoil in all vehicles!