Originally Posted By: goodtimes
All companies can write what they want about filter efficiency, even if it isn't true. Who is going to buy the machines and do the tests to verify?
Very true that the everyday guy isn't going to have filters ISO tested to confirm the claims, but you can bet other filter manufacturers would certainly buy and test the competition's oil filters. The big makers are checking on each others products and claims, looking for false claims and advertising because a lot of times the performance numbers make the consumer lean towards the product they see having better performance.
Originally Posted By: goodtimes
It could be micron size isn't on the site because someone doesn't know enough to think it is important. Very very few people in the world are taking notice of these numbers, most people think of an oil filter in simple terms, like a coffee filter. It is a filter that's it.
True ... most people don't even know what a "micron" is. They see "99.9% efficient" and automatically think that is a super good filter.
Originally Posted By: goodtimes
I was thinking complicated about my coffee filter this morning, then stopped it.
Yeah, what sized micron coffee grounds are getting past that coffee filter and going into your stomach? Also, coffee isn't very desirable when the filter ripped and let all kinds of big chucks into your coffee.