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Old 07-01-2001, 11:12 PM   #1
phred's RS
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Question Oil Filter - How Long?

I'm going to change to Redline motor oil. According to them, I don't "need" to change the oil for 10-12,000 miles. What kind of filter do I need to use with this stuff? I usually change the filter everytime I change the oil. Can Fram last this long?
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Old 07-01-2001, 11:14 PM   #2
imprezadan
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Personally, I only use the genuine Subaru filters. Other people on this board haven't had problems with others that I know of, but I really like using all oem tune up parts.
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Old 07-02-2001, 08:57 AM   #3
Opie
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Redline says you don't need to change the oil for 10-12,000 miles...but you still need to change the filter every 3-6,000 miles.
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Old 07-02-2001, 09:40 AM   #4
phred's RS
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Thanks for the help guys!
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Old 07-02-2001, 10:15 AM   #5
ChosenWon
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Ihave used Bosche, and now I use Wix. Never, ever, ever use Fram. Amongst other reasons they use cardboard valves, that get saturated, and stop functioning after short period of time, to say nothing about exploding filters due to thin sidewalls. and thev there is the lowest # of square inches of filter paper of any other filter, and then there is.....(I have the url that compares about 30 or so filters to an exact science, if you wnat it e-mail/PM me.)

anyway, bosche was ok, but I really like my Wix, it is a little more expensive, but now that I run Mobil1 I need a high quality filter, And I am not paying $10 for a K&N oil filter! I will change out the filter and oil at around 5.5K-6K miles.

redline may say that you can go 10K-12K, but that is under ideal conditions. That means perfect weather, (is it 70 degrees everyday where you live?) No short trips, no high rev's, driving like your mom etc. The way most of us drive, I think it would be closer to at least 8K. But of coure it is your car. I already feel weird about going as long as I am between changes. I would go nuts waiting until 12K!

And to answer your orginal question, If you want to go that long on a filter I would suggest to do it at least wiht a K&N. And keep in mind that Redline sells their own oil filters as well, that also might be something to look into.
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Old 07-02-2001, 12:47 PM   #6
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How do you change an oil filter and not change the oil? Just a curiousity question.
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Old 07-02-2001, 02:25 PM   #7
Ken S
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The oil filter is located higher up than the oil pan. If you shut off your engine and let the oil drain back into the pan, you can change just the filter with minimal oil loss.
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Old 07-02-2001, 07:23 PM   #8
ChosenWon
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even doing it that way it will not only be messy, but you will lose oil as well. I guess you could pour the oil from the filter back into the engine, but that just seem wrong.
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Old 07-02-2001, 08:55 PM   #9
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I use would use Mobil One or Pure-One Purolator (they make Subaru oil filters). These are good so is K&N. Now I use an Amsoil.com oil filter, they last 12,500 miles. The numbers are SDF-20, and they make one that is 1 inch longer the SDF-36. I use the sdf-36 because it allows more oil to flow and since it's larger it helps cool the oil.
Good Luck
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Old 07-02-2001, 10:23 PM   #10
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Quote:
Originally posted by ChosenWon
even doing it that way it will not only be messy, but you will lose oil as well. I guess you could pour the oil from the filter back into the engine, but that just seem wrong.
If you let it sit, overnight, all you will lose is the oil that is in the filter, and what's still in the engine, if your filter has a backflow valve. You should never pour fluid from a filter back into the system it came from.

You should change the filter at the regular maintenance interval. Synth is highly resistant to thermal breakdown, which is why it lasts so long, but it doesn't do anything to prevent contamination. It's also not a bad idea, if you are running synth for extended intervals, to get the oil checked periodically.

Personally, I just run synth and change fluid/filter at 7500mile intervals.
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Old 07-02-2001, 10:46 PM   #11
ChosenWon
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Quote:
Personally, I just run synth and change fluid/filter at 7500mile intervals.
Yes, but the question is what filter do you use to go that far?
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Old 07-02-2001, 11:09 PM   #12
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The oil that you lose from changing the filter can simply be replaced with new oil. It actually adds fresh detergents, refreshening the oil.

I use Mobil One and go about 9, switching filters half way.
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Old 07-03-2001, 12:44 PM   #13
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Quote:
Originally posted by ChosenWon


Yes, but the question is what filter do you use to go that far?
7500 miles is the mfg. recommended interval, so I'm not terribly worried about it. I use either the OEM filter, or the Purolator filter, which is the same thing.
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Old 07-03-2001, 02:51 PM   #14
ChosenWon
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Um, ...wow. Please tell me your running synthetic.
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Old 07-03-2001, 04:19 PM   #15
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absolutely. I do 3-5k changes when running dino.
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