Yes Sarge we are testing. Tim talks about testing, etc....... I wonder if Amsoil tested the EaO filters on Honda and Toyota applications for 6,000,000 miles to see if they'd fail. I don't think so, they failed and had to be redesigned. Seems the end user did the testing, without even knowing it. I wonder if they tested the 15,000 mile service life of the new and improved filter for 6,000,000 miles? At least here we're doing our own testing at our own expense, and taking "the risk".