do you load a new filter w/oil before installing?

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Harry when you say you reuse the Eao filter do you mean you never take it off or do you take it off and dump the old oil out of it and reuse it?




No, I just change the oil and leave the filter alone. I have considered dumping the filter though, but have since decided to let it go. The Eao leaves the oil incredibly clean anyway and the filter is small....not much to worry about.
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I don't prefill my filters. However, when I got my Harley back in November I was looking through the owners manual and HD specifically says to prefill the filter with enough oil to soak the filter element. So when I changed the oil for the first time, I did.
 
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My father, an old Chrysler man, always said that as long as the engine was run for a while just before changing the oil there would be enough lubrication on the bearings, cylinders, etc. to protect the parts until the filter filled and system came up to full pressure. Actually, those parts are much more starved of oil the first few seconds each time the engine is first started after not having been run for several hours.




This is another plus for the hot, non-extended, drain method.



And chalk another one up for the "OMG, the engine just turned another rev - it must be wearing out!!" obsessive-compulsive oil maintenance freak.

By this logic we should never leave the engine shut off for more than an hour, lest it self-destruct in an untimely manner. Sheeesh.
 
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Lay the motorcycle on it's side? Hook up a block and tackle and tie a rope to the front/back wheel and hoist up that end?
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I actually think that would work. Now where oh where did I put my block and tackle....?
 
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It's so easy to pre-fill an oil filter with whatever amount of oil is practical that, well....even a caveman could do it.
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Eight out of ten Cro-Magnons would probably find that offensive.



Here come more of those ignorant insurance Co. commercial "idea" people.
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But since my filters are horizontal ("brilliant" idea, GM
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) I generally don't but maybe will try to soak the media.
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Meaning watch the insurance company start watching the postings here and then create (?) another series of dumb commercials with an actor and a CGI lizard trying to change oil before going out on the town. Thus reminding people they need insurance. Something like that. Sorry if any of this rambling was taken the wrong way. No harm intended.
 
I load them depending on the application...

On my CTD, where the filter spins on vertically, I fill it with nearly a quart of oil prior to installation.

On both my cars, with the filter mounted horizontally, the oil would run out if I tried it.

And another consideration is the size of the filter...I don't worry about a small filter, but a large filter (like that on a CTD) takes a lot to prime...

steved
 
I never do. If it is a turbocharged gasoline engine, I disable the ignition and crank until I get oil pressure. Now, for my reason for not prefilling filters. I have came from an agricultural background, so a "standard" oil change consisted of anywhere between 5 and 10 gallons of oil and at least two oil filters. We got oil in bulk drums as a rule, unless it was a specific application which didn't warrant keeping a large quantity of the lube on hand . . . in this specific case, the 10 gallons or so of transmission/hydraulic fluid in the combine. We bought that specialty fluid from the manufacturer in 5 gallon buckets. The nice thing about 5 gallon buckets of oil is the empty buckets -- we would remove the lids, clean them out, and use them for oil drain containers, misc. storage containers, etc. What we found upon removing the lid from one bucket was large metal shavings at the bottom of that bucket. Needless to say, we went back to the manufacturer, got replacement oil, and replaced that in the machine. That did, however, get us to thinking. There may be small bit of foreign particles in oil we can't see or maybe do not notice. When prefilling a filter, that oil is being placed on the "clean" side of the filter media. Based on that, I do not prefill filters. When running a high quality oil, performing a quick, hot oil change, and keeping the engine at a low idle, we never noticed any difference on the UOA's from not prefilling filters.

Just my experience, just my opinion.
 
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There may be small bit of foreign particles in oil we can't see or maybe do not notice. When prefilling a filter, that oil is being placed on the "clean" side of the filter media. Based on that, I do not prefill filters.




now THAT is food for thought....
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(sorry, it's the only food they had)
 
Usually though, when pre-filling a filter, you use oil from the top of a bottle( at least I do), so any settled crud that may or may not be in the bottom won't get into the filter.
Particles in the bottom of a 5 gal. pail could come from several sources, not necessarily the oil fill machine.
I've looked into the near empty quart bottle numberous times and have yet to see anything other than a small amount of oil. Once that oil settles to the bottom, I pour it out into a funnel and didn't see any junk going into the engine.
 
Allow me to make one point I left out . . .

The buckets of oil in question were double-sealed, as all 5 gallon buckets of oil are. We would pull the seals, dump the oil in the machine, and then remove the lids with a pocket knife (come on, we have to get the last little half quart or so out of there!). The only source for the shavings was from the manufacturing/packaging process.

I'm not saying it is in every container, in fact it is the only time I have seen it happen. On the other hand, I don't think we would be able to see a lot of the particles that could damage an engine while in oil suspension with out naked eye. It is, however, enough to make me paranoid. With UOA's proving that there is no damage from not pre-filling filters, my choice is easy.

Before anyone asks, no I do not have access to those UOA's any longer as I am no longer employed in the fields, so to say. Yes, I deserve thorough chastising and a severe beating for not saving copies of the UOA's while I could. I lay myself at everybody's mercy.
 
Yup. I changed the oil on the Neon today(201,000 miles), and as always, pre-filled the new oil filter. In theory, it's a certainly a good thing to do with spin-on filters- and the Neon's filter hangs vertically so it's easy. In practice? Well, you know all those oil changes done by all those Iffy Lubes & stealerships? OK- in how many of those did they pre-fill the filter? My guess is none at all.
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When I just did my Neon I did, but it took just as long to turn the oil light out. Noise was about the same. Ah well, still gonna do it again I'm sure.

Diesel's you have too or you could mess it up.
 
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There may be small bit of foreign particles in oil we can't see or maybe do not notice. When prefilling a filter, that oil is being placed on the "clean" side of the filter media. Based on that, I do not prefill filters.




now THAT is food for thought....
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(sorry, it's the only food they had)




Yep...look at this VOA typical of many oils on the market:

http://theoildrop.server101.com/forums/showflat.php?Cat=0&Number=474068

It has a ISO cleanliness code of 18/15. My last UOA reported 16/12 after 4,000 miles with a SuperTech filter. If I'm going to pre-fill a filter, I filter the oil first.
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The talk of not pre filling a filter due to possible contamination of dirty "new" oil is silly.

The way to do it is take a small plastic hydraulic hose plug, which can be found at any hydraulic shop and plug the outlet hole of the filter before pre filling.

Try it, you'll like it and it works.
 
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The talk of not pre filling a filter due to possible contamination of dirty "new" oil is silly.

The way to do it is take a small plastic hydraulic hose plug, which can be found at any hydraulic shop and plug the outlet hole of the filter before pre filling.

Try it, you'll like it and it works.




...And watch the oil spill over the sides of the filter as the ADBV blocks any flow into the filter.
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it doesn' say anywhere in the car manual that I should prefill oil filter with oil, neither it says so in the Haynes manual. So I guess it's not that crucial. I just put oil on surface. that's it.

why do you have to prefill anyway ???
 
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