Amsoil dealers writing about oil filters and factory warranties! Do any of you care to discuss the "little" problem Amsoil had with 6.0 Powerstroke oil filters? You know, the ones that were an teeny bit shorter than OEM and failed to work properly with the factory anti-drain valve? I don't give a [censored] about Amsoil filtering down to .000000003 microns if the filter doesn't even fit correctly.
That's just one reason I use a Motorcraft oil filter in my Powerstroke.
Warranty replacement 6.0 engine = free or $100.00 deductable 36,001 - 100,000 miles
Replacement 6.0 engine with denied warranty = $13,000+
Motorcraft oil filter at Walmart = $19 peace of mind.
Most auto manufacturers are becoming more and more strict with warranty claims. They can play the game better than me, you, Pablo and Amsoil.
Look at what Subaru of America does. In their owners manuals, they suggest that Subaru Coolant is preferred, but specify a generic type if Subaru coolant is unavailable. Simultaneously, the published dealer service bulletins stating that any cooling system related warranty claims would not be honored unless Subaru coolant was present.
I called Subaru of America and informed them this was a rather clear violation of the tie-in provisions of the Magnuson-Moss Warranty Act. Their formal response was that the service bulletin means that the dealer has to refill with Subaru Coolant after completing warranty work. Funny. My attorney didn't read it that way.
As for not testing oil or other fluids for warranty claims: I've personally seen a Subaru WRX at a California dealer with a blown engine. The young owner claimed hydraulic lock after "driving" through a puddle. Subaru of America paid for an oil and fuel analysis which showed that nitromethane was added to the gas tank.
Subaru officially cut OCIs in half on all 2008+ turbo engines. that means 3,750 miles. Gee, do you think the will look carefully at what oil and filter are present on failed engines? Nah.......