While we are on the subject, something you may or may not know. Looking at a filter substitution guide, which I have done several times so as to reduce the types of filters necessary to service my equipment, I obviously look for the smallest micron filtration number.
What you have to remember is that "full flow" rated filters have a limit as to how small a particle they will allow to pass, usually 20 microns, give or take to allow the volume of oil to pass that the engine requires.
On OTR diesels, you will find 2 filters, a full flow and a partial flow. The partial flow only gets about 10% of the oil volume (due to internal restrictions) but it's of a much tighter media limiting flow-through to around 5 microns and is in there to clean up the leftovers......one of the reasons why you get a million miles between major overhauls.
Course you could do it all with one filter but to get the full flow, it would be huge.
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Today's Featured Article - What Price Enthusiasm? - by Anthony West. Quite frankly, for some time now restorers like myself have become more and more concerned about the rapid increase in the prices of old farm machines here in England. There is now a growing market for "As found" machines. Which as machines get rarer, has found the birth of a new industry....one of the "procurement agent". These agents appropriate as much old machinery as possible then inflate prices at auctions. So at what price enthiusiasm? We are now seeing poor machines which 3 years ago ma
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