
The lightweight oil's for winter roving, and there's a tiny leak. Note the Blackstone container

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To wit, the car with 274,000 ran Fram year-round, from 95°F to -15°F, on 4000 mile M1 oil changes.A website entitled "Oil Filters Revealed" [4] has created some controversy about Honeywell's use of paper oil filter media and cardboard internal end caps in Fram oil filters. In this study, multiple oil filters were dissected and compared. The study determined that competitors in the same price range use different materials, such as metal or plastic for endcaps, and blended or synthetic filter media. While the lower cost materials create concerns of perceived quality, no quantified performance or durability comparisons have been made.