Features:

• Exclusive Micronic Filtration
• Silicone Anti-Drain Back Valve - Retains oil in the filter for superior protection at start-up
• PTFE Treated Sealing Gasket - reduces friction to assist in removal of the filter
• More Pleats - Provide more filter surface area to prevent oil restriction and adds an extra measure of protection
• Colors may vary: product may ship in blue or gold

Rating : - Best filter available for the money.
I did a great deal of research on this product since I am switching to synthetic oil and I needed a good filter to hold up to the increased oil change intervals. After researching filters, the one I discovered that was recommended by experts and consumers alike over and over again was the PureOne.

Most oil filters have filter elements made of paper and are effective down to about 40 microns. The advanced filters, such as the PureOne, have composite elements made of paper, cellulose, and fiberglass, and are effective down to 15 microns or less. Typically these advanced filters also have more surface area on their elements, and therefore more capacity.

Purolator states that their premium filters capture 97.8% @ 30 microns and 85.2% @ 20 microns. These numbers are typical of a normal paper element oil filter. The Purolator Pure One filters capture 99.8% @ 30 microns and 99.2% @ 20 microns. This means the Premium filter is letting through eleven times as many 30 micron particles as the Pure One, and eighteen times as many 20 micron particles. Clearly, the Pure One filter is doing a considerably better job of cleaning the oil than the premium filter.

The way the Pure One achieves this filtering efficiency is by combining three different types of materials in their filter: paper like everyone else to catch the big stuff, and cellulose and fiberglass fibers to fill in the "large" holes in the paper with their much finer fibers. Filters like this are now made by Purolator, Hastings (marketed as AMS), and Champion (marketed as Mobil 1 and Bosch). Accordingly, the best oil filters are the Purolator Pure One, Mobil-1, AMSOil, and Bosch. If you use one of these filters with one of the commercial synthetic oils listed above, you have the best protection money can buy.

Filters also have relief or bypass valves. These valves are set to trigger if the filter element is making too large a pressure drop. Normally, this would be because it is clogged, however on an engine with a very high flow oil pump this can also happen if the oil is very cold. If you are using an advanced synthetic oil, you should probably change your oil filter about twice as often as you change your oil in order to avoid clogging of the filter and resultant bypassing of that filter.

Finally, some oil filters come with an anti- drain back valve. TThis is typically a piece of nitrile or silicon rubber which blocks off the filter oil inlets unless there is positive pressure into the filter. After you have used a filter for a while, if it's doing it's job, the filter is full of these 20 to 50 micron particles which mean death for your bearings. When you turn off your engine, if the filter has no anti-drain back valve, whatever oil is in the filter will drain back into the oil pan, bringing with it a whole bunch of really evil junk. So, we want filters with good anti- drain back valves: the stuff that's in the filter should stay in the filter.

The Pure-One and the Mobil-1 anti-drainback valvesuse the superior silicon rubber. The Pure-One has a larger core and a convex shaped mating surface to guarantee an excellent fit.

So, as you can see, the PureOne oil filter delivers an excellent product at a reasonable price. I use them on all my cars, boat, generator and Waverunner. You cannot go wrong.