Hi Steve
Yeah, I certainly wouldn't go for a cheap filter, the only reason I chose the Purolator PureONE was because of the claims
made on its performance, which I am still yet to find any complaints about except for mine.
They are the No.1 oil filter made in the US and retail for much the same as a Ryco in price here.
The weird thing is,, that the oil filter review site has the following comments down ..
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Motorcraft
This was a Purolator hybrid. It had the Premium Plus case (anti-drainback valve, gasket, etc.), but with a Pure One
filter element. This is a cheap way to get a Purolator Pure One. It is sold at many locations including AutoZone,
Pep Boys, etc.
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Now unless the US Motorcraft (Z9 equivalent) and the Australian Motorcraft (Z9 Equivalent) filters are from a different source,
Im practically using the Motorcraft filter myself.
And the review of the Purolator PureONE below sounds like its hit the nail on the head when it comes to the oil flow.
It makes me wonder how much filtration the Ryco Z9 actually does, so as not to sacrifice oil pressure.
I took the car for a drive this morning and at 80-100 kph pressure is normal , on about the third white line towards the top of
the gauge in the dash and at 60-80 kph it dropped halfway down to the next line down below And at idle it is just below the
second white line up from the bottom of the gauge.
So I was pretty happy with that and put it down to perhaps the filter needing a run in period due to its thick design, but when I
got out of the car with it still idling, it sounded like a very quiet diesel engine under the bonnet.
So I think Ill have to get rid of it.
Just for cuiosity did you find similar readings on your oil pressure gauge with the Ryco Z9 and the Motorcaft filters ?
Shark
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Purolator Premium Plus
The Purolator is a solid design. It seems to have one of the tougher paper filter element of them all and the bypass
valve is built right into the cartridge. There are no internal sealing problems with this filter at all. There is an
assembly string that is wrapped around the filter element, probably to hold it in place while the glue cures in the end
caps. In the ProLine (one of the Purolator clones), the string was wrapped too tightly and had damaged the filter
element. All the other Purolator-made filters (8 in all) had no trouble, and even the damaged one would probably
have been fine.
Purolator Pure One
This is an interesting filter design made by Purolator. Most of the construction of the Pure One is the same as the
Purolator Premium Plus. The big difference is the filter element itself. It has a dense paper/fiber filter element that
can filter very small particles. The result of this is cleaner oil exiting the element, but more oil restriction. Purolator
addressed this by adding more filter material (more and deeper pleats). After seeing one of these filters cut open, I
am apprehensive about this filter. It seems to have so many pleats that it is almost a solid chunk of filter element.
It seems like it would end up restricting the flow, more than anything. Purolator has plenty of data on the filtration
abilities of this filter and I don't doubt it, but they have no flow data. Even so, I don't see any major problems with
this filter. It also sports a silicone anti-drainback valve and a PTFE treated nitrile rubber gasket.
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