I use Mopar filters on my truck (although FL1As will work fine); I've used whatever on my CVs. My Mustang will get Motorcraft.
I have tried Royal Purple, and Mobil 1 EP filrters. They are definitely heavier, and the 'can' is beefier. But... at the end of the day, on a 3000 mile OCI, I'll pocket the extra 10, and not lose any sleep over it. A heavier filter makes not a better filter (although the results above show the RP filter was one of the best). If it is endorsed by the vehicle manufacturer (ie Mopar, or Motorcraft filters), then its good enough for me.
I have tried Royal Purple, and Mobil 1 EP filrters. They are definitely heavier, and the 'can' is beefier. But... at the end of the day, on a 3000 mile OCI, I'll pocket the extra 10, and not lose any sleep over it. A heavier filter makes not a better filter (although the results above show the RP filter was one of the best). If it is endorsed by the vehicle manufacturer (ie Mopar, or Motorcraft filters), then its good enough for me.
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