OIL FILTERS

[ChuckMC8]

What intervel does the oil MFG reccomend?

[gg04]

Oil mfg do not give change intervals...around 1963 all major auto mfgs moved change interval to 6000 mile due to modern oil ..in 1965 ford changed all services to 12000 mile includeing need for oil change..by early 70's all major auto mfg suggested 12000 mile oil  change intervals...auto mfg can only require that oil stay within thier specs...the advent of the 10 minute oil change shack brought about the 3000 mile oil change on most of the american public...Oil companies love it, not needed but makes lots of cash...At the last Great American Truck Show (otr) in Dallas all the major engine mfg but one had thier own bypass oil filter system displayed on thier show engines...4 aftermarket mfgs where offering thier systems...mostly based on the current preventive maintenance belifes that  the major cause of wear and breakage on all engines is fuel soot...and other suspended foriegn material..ALL engines need filtering..the factory full flow will only filter untl it goes into bypass due to too much oil volume...on nearly all engines and all brands of filters we tested (this I have not done since 1976) gas engines went into bypass under 2000rpm and diesel filters at around 1300 rpm..then you have no filtering effect at all...just oil from pan to engine..do some research not just quotes from some web site requoting misinformation.....remember over half the information on the web is wrong...and oil filtering ,rerefining is a major suplimental technology that has been part of the oil industry ,with the same engineers and studies, since wwII...gg04