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Old 12-27-2018, 07:21 PM   #1
Bob Mulry
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Default Re: Oil Filter Comparison

Quote:
Originally Posted by Eman View Post
Why do people use a filter with an anti-drainback valve if their filter isn't mounted sideways or upside down?
Hi,

If the filter is located higher than the level of the oil in the pan, it will seek its own level..

This is called the siphon effect and will empty the filter, oil galleries, lifters and everything else in the oil circuit and drain it to the oil pan..

Bob
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Old 12-27-2018, 08:26 PM   #2
Mark Yacavone
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Default Re: Oil Filter Comparison

I wish I saw this about two weeks ago.
I never used Fram..Always AC, since I worked at a Pontiac dealer, many moons ago. They used to have AC at Walmart, as well as Fram.

Anyway, I went to W/M to get some oil and filter for the ol' 460 motor home. I grabbed a Fram filter to replace the one on there from last year. That's pretty much all they have now.

The 460 filter sticks out in the front, as some of you know. I still put about a half qt. in it , before tipping it up into place. I spilled some oil on top of the anti- drain back valve. I tried to push the valve open with a little pick, and it was real hard and would barely open. It seemed like plastic or some kind of compressed garbage.
Now I know why...It is!
Never again.
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Old 12-28-2018, 12:07 AM   #3
FED 387
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Default Re: Oil Filter Comparison

Just remember regardless whose oil filter you purchase basically only 4 large companies make all of the oil filters in the WORLD for everybody--The Rank Group ---Mann-Hummel------Kuefner Filters----Parker Hannifin corporation--FED 387
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Old 12-28-2018, 08:44 AM   #4
SSGN
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Default Re: Oil Filter Comparison

Interested in more info on these K&P filters. I remember the system 1 but never tried them .I have always used the Wix/Napa Gold series .
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Old 12-28-2018, 10:46 AM   #5
carl hinkson
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Default Re: Oil Filter Comparison

Have used the NAPA/Wix non R filters for years with no bypass, Have seen the difference between using a filter with a 61 Micron and using a filter with 21 micron rating.
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Old 12-28-2018, 11:29 AM   #6
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Default Re: Oil Filter Comparison

Did some research on oil filters a few years ago.

Micron rating on filter paper is an "average" opening size meaning there are larger and smaller openings.

Higher quality = tighter range of size of openings.

Screen filters offer a tighter range in opening size particularly those of medical grade stainless steel plus can actually flow more oil with less restriction.

There's a few HP there.
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