Originally Posted By: goodtimes
The flow over filtration is something someone made up, probably on here. There is one chart 4 years old from Amsoil showing 51% efficiency, no flow rate for the Toyota filter. The Denso above is not the same, and the new ones are made in China. The problem with bulk purchases is they might go over 6 years or so, too old for me. I would use a premium filter for the better filtration and better construction not because it says 15000 on the box. For me that would be over 2 years, not going to do that. I pay the $6 once a year for a better filter.
Do a search on the DW filter's efficiency rating-it's around 75% (@ 25 micron AFAIK), definitely not high. Unlike the Classics & similar, no one has had a failure yet that I've heard of. Obviously the $9 Ultra is better.
The flow over filtration is something someone made up, probably on here. There is one chart 4 years old from Amsoil showing 51% efficiency, no flow rate for the Toyota filter. The Denso above is not the same, and the new ones are made in China. The problem with bulk purchases is they might go over 6 years or so, too old for me. I would use a premium filter for the better filtration and better construction not because it says 15000 on the box. For me that would be over 2 years, not going to do that. I pay the $6 once a year for a better filter.
Do a search on the DW filter's efficiency rating-it's around 75% (@ 25 micron AFAIK), definitely not high. Unlike the Classics & similar, no one has had a failure yet that I've heard of. Obviously the $9 Ultra is better.