That isn't an independent study. Since it doesn't list any methods in obtaining the data, it isn't very scientific, either.

There is a toll free number listed so you can direct your questions to the company and talk to them.I just posted the information so you could contact them and ask for it yourself.

Bypass filtration isn't snake oil. Pretty basic stuff here... The testing for observing soot contaminate reduction can bee viewed at ISO:

http://www.iso.org/iso/iso_catalogue...csnumber=45425

You will also find data there for standards testing for normal full flow filters there as well.

You can easily extend drain intervals, but the cost is somewhat offset by the cost of the media. However I have read some data where oil analysis is used to determine drain intervals and has found in many cases that the oil does in fact stay serviceable much longer which would then become significant savings.

I know Amsoil has a nice bypass filter setup, and when combined with synthetics can dramatically extend drain intervals. And no synthetics aren't snake oil either. Tons of data proving that one as well. The real question is actual cost savings. These products cost money and in some cases offset the promised savings so you have to run the numbers to decide for yourself if your saving yourself anything by using these products.

I think if you will take a little time to research the bypass filtration you will find that it is pretty basic and does work. It all comes down to the math.

Longsnowsm

Bypass filters are good units. The one I use has a heating element that burns off extra moisture and then sends it through a microfine filter. The filter is just like the ones on the OEM engine, it just uses oil pressure then gravity to finish the process. The first time I used it, I drove 10,000 miles before my oil started looking black. I'm getting ready to switch to full snythetic oil also.