for the guys that are into recreational oil changing...
in [Technical]
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From: jim on 22 Apr 2010 08:16 "C. E. White" wrote: > >> BTW, changing your air filter too often is actually > >> a bad > >> idea. > > > > Good post, IMHO, but I'm curious why you say this? <NB - a straight > > question, not challenging you - always happy to learn something new> > > Read these references and decide for yourself - > > http://www.filtercouncil.org/techdata/tsbs/89-3R3.html > http://www.tomorrowstechnician.com/Article/4991/component_connection_the_dirty_little_secrets_of_filters.aspx > http://www.donaldson.com/en/filtermedia/support/datalibrary/052024.pdf > - go to page 10 or so Your information is obsolete. Here is what the Donaldson article says on page 10. ****[quote]***** The use of nanofiber filter media in engine air filters can solve the problems of overservicing and can provide the customer a filter which works well (i.e., is satisfactorily efficient at removing particles greater than 1 micron) when new. The nanofiber layer acts to improve initial efficiency as a surrogate for a dust cake. The low additional pressure drop of the nanofiber layer does little to impair engine power or fuel economy. A nanofiber filter works as a customer intuitively expects: it provides full protection with maximum engine performance when new. ****[end quote]****** That article is an advertisement for Donaldson filters with "nanofiber" technology. That is a advertising buzzword that is intended to convey the idea that Donaldson filters provide the maximum dirt trapping capability when they are brand new. Other filter manufacturers make the same claim. They all say their filters are new and improved and therefore will trap dirt just as good or better than a dirty filter right out of the box. -jim
From: Tony Harding on 21 Apr 2010 01:26 On 04/06/10 18:25, AMuzi wrote: > Joe J wrote: >> >> "C. E. White" <cewhite3(a)mindspring.com> wrote in message >> news:hpg44j$hp$1(a)news.eternal-september.org... >>> >>> "Bill Putney" <bptn(a)kinez.net> wrote in message >>> news:81vfodF92dU1(a)mid.individual.net... >>>> C. E. White wrote: >>>> >>>>> Dusty conditions - how many people actually operate their vehicles >>>>> in dusty conditions more than very occasionally? The engines of >>>>> modern cars are sealed much more thoroughly than cars from the >>>>> middle of the last century. Assuming everything is in good order, >>>>> the main entry point of dirt into your engine is through the air >>>>> cleaner. So make sure you have a good air cleaner and stay out of >>>>> volcanic ash... >>>> >>>> And don't use a K&N filter (and - no - I'm not a troll trying to >>>> start a fight with anybody). :) >>> >>> Don't go there. I can't even convince my Son he is an idiot for using >>> a K&N Air Filter. I keep telling myself, his car, his money. >>> >>>>> ...BTW, changing your air filter too often is actually a bad idea. >>>> >>>> Other than unnecessary expense of throwing away an unspent filter, >>>> why? You're going to say you need some dust to clog up the bigger >>>> holes? Still better than a K&N or equivalent. >>> >>> Read these references and decide for yourself - >>> >>> http://www.filtercouncil.org/techdata/tsbs/89-3R3.html >>> http://www.tomorrowstechnician.com/Article/4991/component_connection_the_dirty_little_secrets_of_filters.aspx >>> >>> http://www.donaldson.com/en/filtermedia/support/datalibrary/052024.pdf - >>> go to page 10 or so >>> >>> My largest farm tractors have air filter restriction gauges (and >>> back-up air filters). In 30 years I've had a filter restriction light >>> come on once. Still I like to replace the air filters annually >>> because I worry about the filters degrading over time. >>> >>> I wish I had a good picture of peanut picking...then you'd know what >>> real dusty conditions are like. I've been in dust so thick you >>> couldn't see past the front of the tractor. Not fun...but at least >>> I've always had a tractor with a cab. My Dad picked peanuts with open >>> deck tractors. >>> >>> Ed >>> >> OK, I'll bite, what's a K&N filter? > > Looks like this: > http://www.carburetion.com/weber/weberR2.asp Webers! Wow, talk about a trip down memory lane - my old Porsche 911S had twin 3-barreled Webers.
From: Tony Harding on 21 Apr 2010 01:34 On 03/31/10 08:33, Mark wrote: > If there are other pools of oil in the engine, why doesn't the oil > turn dark right away? What is the percentage difference between 5% > old oil left and 1%? Think it's 4%? Of what? 4% is indeed 5% - 4%; however, 5% = 1% * 5 as well.
From: Tony Harding on 23 Apr 2010 05:28 On 04/21/10 01:34, Tony Harding wrote: > On 03/31/10 08:33, Mark wrote: >> If there are other pools of oil in the engine, why doesn't the oil >> turn dark right away? What is the percentage difference between 5% >> old oil left and 1%? Think it's 4%? > > Of what? 4% is indeed 5% - 4%; however, 5% = 1% * 5 as well. Oops! I *meant*: Of what? 4% is indeed 5% - 1%; however, 5% = 1% * 5 as well.
From: C. E. White on 22 Apr 2010 07:25
"Tony Harding" <tharding(a)newsguy.com> wrote in message news:hqm19505ot(a)news1.newsguy.com... >> Dusty conditions - how many people actually operate their vehicles >> in >> dusty conditions more than very occasionally? The engines of modern >> cars >> are sealed much more thoroughly than cars from the middle of the >> last >> century. Assuming everything is in good order, the main entry point >> of >> dirt into your engine is through the air cleaner. So make sure you >> have >> a good air cleaner and stay out of volcanic ash and I think you >> don't >> need to worry about dusty conditions. Let the looks of your air >> filter >> be your guide. BTW, changing your air filter too often is actually >> a bad >> idea. > > Good post, IMHO, but I'm curious why you say this? <NB - a straight > question, not challenging you - always happy to learn something new> Read these references and decide for yourself - http://www.filtercouncil.org/techdata/tsbs/89-3R3.html http://www.tomorrowstechnician.com/Article/4991/component_connection_the_dirty_little_secrets_of_filters.aspx http://www.donaldson.com/en/filtermedia/support/datalibrary/052024.pdf - go to page 10 or so |