Noticed this also when I changed the oil @ filters on my cars a week ago. I bought an extra one and cut it open and it was identical to the old white Napa Gold or Wix filters. Don't Worry.
quote:
Originally posted by Ferb:
So the ads during NASCAR with Michael Waltrip talking about the new "spin-flow technology" are incorrect?
My oil will probably be 1/100th of a degree cooler!!quote:
Originally posted by Eddie:
Black filters cool better because of the "black body radiation effect" Physics 100.
They're black 'cause that's the color NAPA wanted them painted, no other reason. Sharpies also come in silver and white.quote:
Originally posted by tom slick:
black filters also absorb more heat from the surrounding engine parts![]()
i don't think it makes a bit of difference. one thing about black filters is that it is hard for me to write the date and mileage on them with a sharpie.