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Originally Posted By: Danh Varies a lot by manufacturer. Ford has the same OCI as for its port injected engines and I have yet to hear of a DI Ford engine that needed intake cleaning. Hyundais and Kias, on the other hand, seem to have plenty of these problems as did many European manufacturers...

Yet its worse than just a simple geometric progression (E**n) since the cheap oil filter can't hold the small particle for long, and the cycle repeats itself as its repeatedly freed into the oil flow. My assertion anyway.

Originally Posted By: 901Memphis Originally Posted By: jhellwig I don't think we have the frn problem here cause there isn't a shell station anywhere around. Same for me ... I see the problem: Memphis is not IN ky, you know... Geo-confused there man....

Originally Posted By: kschachn Also remember I agree with higher efficiency filters. It's just that apparently, Honda and Toyota do not. They are pretty obsessive about most things so I wonder why they aren't when it comes to oil filtration? I know Honda and Toyota are obsessed with quality...

Originally Posted By: kschachn It just comes down to how long is too long? Remember, the particle will be in the oil for at least one pass regardless of the filter being used. So is two passes bad? Is three? With the bigger pores in the cheaper filter, a small particle, say 10 microns or...

Originally Posted By: fetchfar 2. Observations of the engineering trend that more modern vehicles specify better filtering,... i.e, early engine designs (div> Originally Posted By: dnewton3 Filtration is certainly "better" than in 1950, but it's peaked for many reasons. And not the least of...

I think where dnewton3 and I agree is that premium products (oil and filter) are beneficial for long oil change intervals. Where we differ is that premium products (oil and filter) can also benefit the frequent oil changer. Since engine air filters allow in a lot of junk, you can't get away...

Originally Posted By: dnewton3 The Fram and perhaps the Wix would likely filter to any level for a longer duration, because they are made to hold more. But that is not "better" filtration; it's filtration for "longer" periods. "...to any level..."? Really? After performing to higher filtration...

Originally Posted By: gregk24 0w20 would be a fantastic choice! Hope you can fine the Mazda Moly 0w20, its super expensive online and my dealer doesnt seem to have it. Other 0w20's are TGMO 0w20, M1 0w20, PP 0w20...all great choices. Yep, the key with the Mazda oil 0w-20 is to get it at a...

The Oxnard, CA fleet department called me again (another nice person) and he basically just adding that oil analysis of their re-refined 'green-type' oil (with MicroGreen filters changed every 6,000 miles or so) they were using out to 30,000 miles came back looking good, worsening around 22,000...

Same thing happened to me 4 years ago, I was left a 2000 Park Avenue (same chassis, more overhang really). Yes great gas mileage. Production of the 3800 V6 engine officially ended on Friday, August 22, 2008 when plant 36 was closed. There was a closing ceremony and speakers who extolled the...

Originally Posted By: RobtE No real engine would ever ingest 50 grams of contamination and most car & light truck oil filters have a capacity of under 20 grams. Few are loaded to over 50% at the OCI/FCI and most don't even get there. Others have argued endlessly about the numbers in that SAE...

Still skeptical about whether getting particles out as small as 3 microns or so doesn't make the oil last longer? "With the new oil filter, the Sheriff’s Office reduced its oil changes to just one annually, reducing fleet oil use by 70% and oil filters by 50%. .....Polk County Sheriff’s Office...

Originally Posted By: RobtE Both of these articles were based on touts for the "microGreen Extended Performance oil filter" made by SOMS Technologies. Microgreen filters I don't know about "advanced polymeric materials that are highly resistant to heat and pressure", but this filter has not...

Originally Posted By: FetchFar I'll try to call up some of the fleet people who test their oil using the microgreenfilter.com 3 micron oil filter to see what their thoughts are. I just called the City of Oxnard (California, remember Rockford Files right?!), and Dan Berlenbach's use of...

Originally Posted By: ZeeOSix Of course a lower efficiency filter is doing less filtering. How can you say it's doing the same job as a much higher efficiency filter?....When a less efficient filter is used, at any given time there will always be more wear particles in the oil that is...

Similar to the way air filters get better at stopping smaller particles as dirt/fibers build up on the filter surface, it probably is true that oil filters, gradually approaching the clogging point, over some miles, would get more efficient. Problem I see is the continuous influx of silicon...

Originally Posted By: kschachn Well, it's just statistics based on the probability of filtering a particle at a given size. ... Those larger pore sizes in the cheaper filters will just keep passing particles for a very long time. ISO 4548-12 as a test sequence, does try to replicate the...

Originally Posted By: kschachn OK but once again, lower efficiency filters don't do less filtering. They stop the same particles as high efficiency filters and in the same number. The only difference is when. From looking at the SEM (scanning electron microscope) images at the 1 minute 42...

Originally Posted By: kschachn OK but once again, lower efficiency filters don't do less filtering. They stop the same particles as high efficiency filters and in the same number. The only difference is when. One gets the impression that over the lifetime of a filter the total number of...