Either you misunderstood my question OR I didn't word it properly.
I'm aware of the type of test you're referring to as I've taken several basic courses on how to interpret oil sample reports that are obtained from an analysis lab. I've got a fair understanding of what Beta ratings and ISO oil cleanliness ratings are.
I understand, that as an engineer, you performed labratory tests that determined the efficiency of a given filter BUT what I actually wanted to know was whether you'd done any testing to confirm the results of using filters from different manufacturers on actual components such as engines, transmissions, gear-boxes, hyd. systems, etc., regardless whether it is expensive or not............
Only a fool would deny that internal wear would be the same between components using good quality oil and filters VS components using poor quality oil and filters BUT a wise man will ask how much difference is there and PROVE IT! For example, he will want know if using filter brand A will get one of his trucks to 40,000 hrs. before an overhaul compared to using brand B which will only get him to 20,000 hrs...............Having that answer and proof, he'll then be more likely to part with the extra dollars to buy the brand A filter instead of the cheaper priced, brand B..............
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Today's Featured Article - Ford Part Number Trivia - by Forum Participants. "Replaced by" means the part was superseded. All of my part books date back to 1964 and New Holland have changed some part numbers. They usually put the old Ford part number on the package. I was suppressed when I looked up the part number of the auxiliary drive shaft because for some reason the part number went through a radical change and it lost its "Basic Part Number". Ford part numbers follow the following rules. Most part numbers are in three parts. The middle part is called the
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