Throughout many threads concerning filters the microns are mentioned when trying to compare filters but no standard efficiency ratings. Filters efficiency is mesured against a standard adopted worldwide so as to compare apples to apples. A notation of say 12 microns is only meaningful if the Beta standard or percentage efficiency is also quoted. A 10 micron filter at 2 Beta is vastly different to a 10 micron filter at 100 Beta yet both are 10 micron filters. The difference is one lets 1 in every 2 10 micron size particles pass through the filter while the other lets only 1 in every 100 10 micron size particles pass through the filter. This 2 Beta filter is 50% efficient whereas the 100 Beta filter is 99% efficient. So quoting microns then stating the efficiency is necessary. If you are buying a filter check that the manufacturer's website does provide the Beta standard or the % efficiency, if not, best to move on.
Most high end filter manufacturers have quite good information that explain this standard rating of filters. Two links from the Tool Box section of Donaldson Filters Australia website are below. This Tool Box section has other topics that are of interest. An example is the explanation of the practice of some filter manufacturers of quoting multiple micron ratings and the fact that this is not a unique feature bu just another way of stating the filters efficiency.
The second link covers new standards of bulk fuel cleanliness to specifically cater for common rail diesels. These standards are related to solving the wide spread problems of all common rail diesel manufacturers caused by any inadequate standard of cleanliness in the diesel we use. This is is also very interesting when applied to some problems experienced by PP members.Anyhow I hope reading the various topics on their website helps.
PS I have absolutely no connection in any shape or form with any filter manufacturer. I just feel that there is a need to ensure we get the information stated on filter efficiency in posts correct. Only then can the efficiency of one filter at a stated micron be meaningfully compared to another filters efficiency at the same micron.
While not a filter applicable to Prados the first link is an example of a filter brochure that provides all required information needed when deciding the best filter for your use.
http://www.donaldsontoolbox.com.au/f...ngines_AUS.pdf
http://www.donaldsontoolbox.com.au/f...gs_Nov2010.pdf
http://www.donaldsontoolbox.com.au/f...el_May2011.pdf
Here is an article which provides further information as to why the practice of merely stating microns is meaningless without (1) the fuel filters efficiency or (2) its water removal efficiency.
http://www.aftermarketsuppliers.org/...ish/89-5R3.pdf
Stating microns also does not take into account the fuel flow of the D4D motor.
A filter designed for a lower maximum fuel flow capacity than demanded by this particular engine will not perform as its manufacturer designed.
Even if the filters fuel flow is within engine specifications you need to know
what is the filter manufacturers designed service life. Do they state change it at intervals of say 5000,or 10,000 or 20,000 km? The result of a guess could be terminal for your engine components.
Most high end filter manufacturers have quite good information that explain this standard rating of filters. Two links from the Tool Box section of Donaldson Filters Australia website are below. This Tool Box section has other topics that are of interest. An example is the explanation of the practice of some filter manufacturers of quoting multiple micron ratings and the fact that this is not a unique feature bu just another way of stating the filters efficiency.
The second link covers new standards of bulk fuel cleanliness to specifically cater for common rail diesels. These standards are related to solving the wide spread problems of all common rail diesel manufacturers caused by any inadequate standard of cleanliness in the diesel we use. This is is also very interesting when applied to some problems experienced by PP members.Anyhow I hope reading the various topics on their website helps.
PS I have absolutely no connection in any shape or form with any filter manufacturer. I just feel that there is a need to ensure we get the information stated on filter efficiency in posts correct. Only then can the efficiency of one filter at a stated micron be meaningfully compared to another filters efficiency at the same micron.
While not a filter applicable to Prados the first link is an example of a filter brochure that provides all required information needed when deciding the best filter for your use.
http://www.donaldsontoolbox.com.au/f...ngines_AUS.pdf
http://www.donaldsontoolbox.com.au/f...gs_Nov2010.pdf
http://www.donaldsontoolbox.com.au/f...el_May2011.pdf
Here is an article which provides further information as to why the practice of merely stating microns is meaningless without (1) the fuel filters efficiency or (2) its water removal efficiency.
http://www.aftermarketsuppliers.org/...ish/89-5R3.pdf
Stating microns also does not take into account the fuel flow of the D4D motor.
A filter designed for a lower maximum fuel flow capacity than demanded by this particular engine will not perform as its manufacturer designed.
Even if the filters fuel flow is within engine specifications you need to know
what is the filter manufacturers designed service life. Do they state change it at intervals of say 5000,or 10,000 or 20,000 km? The result of a guess could be terminal for your engine components.
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