| Author | Message | ||
     Blake_out_there |
The following just in from Noria's Filtration Tips newsletter: Test Data for Objectively Selecting Oil Filters "Apart from the data on the multipass filter test, what other ISO standards exist for the evaluation of filter performance that I can use to objectively select a filter?" The ISO standard for multipass testing (ISO 16889) has changed to require filter manufacturers to publish their data for the beta ratios across a wide size range, that is, at 2, 20, 75, 100, 200 and 1,000 microns. Historically, filter beta ratios were published at either 75 or 200 with an absolute rating (per ISO 4572). The new standard gives a better interpretation of the filter's overall performance, and can be better compared against competitor offerings. In addition to the new multipass data, consider the following data: ISO 2941 - 1974 - Verification of collapse/burst resistance. ISO 2942 - 1994 - Verification of fabrication integrity and determination of the first bubble point. ISO 2943 - 1998 - Verification of material compatibility with fluids. ISO 3723 - 1976 - Method for end load test. ISO 3724 - 1976 - Verification of flow fatigue characteristics. ISO 3968 - 1981 - Evaluation of pressure drop versus flow characteristics. These additional tests are useful for comparison where the installation may be an unusual lubricant, an extreme contaminant-sensitive workpiece, a high-pressure fluid power system or a safety-critical application. When selecting for a noncritical system with no unusual requirements, evaluation of filter suppliers' multipass data, in addition to other commercial criteria, will normally suffice. And... How Long Should My Oil Filter Last? "We have a filter that appears to have been in service for nearly two years without any indication of blocking, is this normal?" While contaminant ingression varies according to environmental and production/maintenance activity, some filter manufacturers specify a life of six months. It is generally a good strategy to take an upstream and downstream particle count to ascertain if the filter is still working properly; if not, replace the element. Consider the maintenance history and try to establish an average life for previous elements as this will give some indication if two years is abnormal. However, there are a number of ways in which the filter may fail without tripping the indicator, and this may lead the unwary to believe the filter is good value. Without a particle count program, it is almost impossible to determine a failed filter. Such failures as a collapsed element, split pleat, poor adhesion on the seam, a sticking by-pass valve or even a faulty indicator are typically not detectable without a particle count program to monitor changing contaminant levels. I've not thought much about oil filters failing. Interesting. More industry standards for improved consumer awareness is a good thing.  | ||
| Jimidan |
Good info. It appears that they are also talking about oil filters for a lot of other applications besides an internal combustion engine. I also wonder how the condensation in the oil of every IC engine effects all of those parameters, as I know what paper does when it gets wet. It swells. Look at the stuff that comes out of your catch can and it is nearly all water and emulsified oil, or what my grandson called chocolate milk. How does the water in oil effect the filtering process? I can only guess, but I have these horrible images in my head of the filter media turning into a wet role of toilet paper...ewe! This is not really happens, but I have not seen this addressed in any of the ISO standards. Is the answer to use a non-cellulose media? It would seem so. jimidan | ||
| Ryker77 |
amsoil has a new oil filter out. very very clean. Plan to put one on my bike soon. | ||
| Jackbequick |
Do the specs mention the micron size? I think typical (Fram, etc.) filters are 10 micron filters. Jack | ||
| Ryker77 |
Superior Filtration The unique construction and full-synthetic media of AMSOIL Ea Motorcycle Oil Filters allow them to provide unmatched performance in motorcycles and other power sports equipment. EaOM Filters last longer, stop smaller dirt particles and offer less restriction than other filters. Ea Motorcycle Oil Filters provide filtering efficiency of 98.7 percent at 15 microns, outperforming the best cellulose/synthetic blend media on the market. For maximum engine protection, AMSOIL recommends changing the EaOM every time you change oil. |
