The c500 will use perolator l30003
Purolator builds a filter that will fit your Mercury. 4 cylinder uses the PL10241 V6 uses the PL24651
A spin on filter mounted on the engine block. Use 4.5 quarts of SAE 5w30 oil any major brand and a quality filter such as the Purolator PL14459 or L14459.
Proformax filters are Pennzoil's house brand filter that are made by Fram or Purolator depending on who you ask. I am not sure but I do know that Purolator is a quality filter. Use a quality filter like Purolator not a cheap filter. The correct Purolator filter for your 1994 Honda Civic is Purolator PL14459. The filter is just as important as the oil so don't skimp on quality to save a couple of dollars. Bosch, & Wix are also excellent filters.
For the 2.4 engine or the 3.5 engine, Purolator Classic - L14610.
kawasaki twin cylinder engines It also fits the 1991 4 cylinder Toyota Camry.
Saturn/Chevy 2.2 ecotec engine
4.3L, engine, Purolator Classic L10111.4.8L or the 5.3L engine, Purolator Classic L25288.
The filter is made by Purolator but that does not mean it is made as good as a Purolator. If it were my car I would use a Purolator filter.
2.4 L 4 cylinder with carb, Purolator part number F29157.2.4 L 4 cylinder with fuel injection, Purolator part number F54604.3.0 L V-6 with fuel injection, Purolator part number, F44710.
Purchase a Purolator Cabin Filter. it comes with detailed instructions.
There is no Purolator equivalent.
A 2007 Mini Cooper S uses a Purolator L15465 oil filter. It is designed to trap small particles in the oil before it can damage the engine.