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Old 01-16-2009, 01:06 AM   #1
RonJitsu
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Default Bypass Oil Filter setup on your Subie

I'm exploring the option of installing a Bypass Oil Filter setup on my 07 WRX.
I searched here, BITOG, & Google, trying to find someone else with a turbo Impreza, Legacy, FXT, etc that is running a Bypass setup. No Luck.

So - any of you guys running one yourself? Or know of anyone who's running one?



Also, Should I be concerned that my stock oil pump might not be up to the task?

And please dont start with "why do you want a Bypass..."
Because Bypass = Straight Ballin
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Old 01-16-2009, 01:56 AM   #2
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go dry sump or go home
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Old 01-16-2009, 02:22 AM   #3
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Not exactly the response I was looking for, but thank you Uncle Scotty.
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Old 01-16-2009, 04:19 AM   #4
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bluesubie - I'm expecting some good information out of you!
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Old 01-16-2009, 10:26 AM   #5
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Originally Posted by RonJitsu View Post
bluesubie - I'm expecting some good information out of you!
LOL, he is the resident NASIOC oil guru
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Old 01-16-2009, 11:16 AM   #6
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nah, he's just the loudest


-James, 7 year BITOG member
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Old 01-16-2009, 11:57 AM   #7
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Thumbs down All your doing is adding unnecessary weight to your vehicle

Ron, what you need to do is use some ingenuity buying the correct parts and install it yourself in a professional manner. Using the correct viscosity imo has the biggest impact on an oil pump's lifespan. Using a straight 30 weight when it's three degrees out would torture it while an 0 or 5W whatever would have no impact.

Still a complete waste unless you want to go forever on the same oil and/or want to put a ridiculous amount of miles on the engine. Your exhaust valves of something else will kill it before you realize a benefit other then extended oil changes.

If someone makes a larger capacity oil pan for our car, I would rather go that route.
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Old 01-16-2009, 02:14 PM   #8
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nah, he's just the loudest


I've had such great luck with OEM filters that I haven't really looked into anything else. Other than using Purolator filters maybe two or three times in a 97 OBS and a 99 OB I've always stuck with OEM. Like you, I'm currently running an Amsoil oil filter and I think that Dyson recommends them to his customers.

I've seen a few posts about bypass filters, but I don't think anyone ever followed through because of the hassle of trying to find a mounting spot.

Andy - I just mentioned you in a bitog thread because a WRX owner is switching to PP 5W-30 in a WRX at 1,000 miles.

-Dennis
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Old 01-16-2009, 06:15 PM   #9
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nah, he's just the loudest


-James, 7 year BITOG member
I figured that you would chime in too. I havent been into the BITOG / oil thing for too long, so I still have alot to learn. Whats your thoughts on a bypass setup for my WRX?

Quote:
Originally Posted by mikeythejew View Post
Ron, what you need to do is use some ingenuity buying the correct parts and install it yourself in a professional manner. Using the correct viscosity imo has the biggest impact on an oil pump's lifespan. Using a straight 30 weight when it's three degrees out would torture it while an 0 or 5W whatever would have no impact.

Still a complete waste unless you want to go forever on the same oil and/or want to put a ridiculous amount of miles on the engine. Your exhaust valves of something else will kill it before you realize a benefit other then extended oil changes.

If someone makes a larger capacity oil pan for our car, I would rather go that route.
I was originally thinking of doing a Moroso oil pan...
I really like the idea of the Bypass because I drive ALOT and really want to try getting a TON of miles on my engine, with a conservative stage 4 setup. So I figured that a bypass setup along with Amsoil SSO will help me get there.
If I do, I'll pick up an Amsoil (23) bypass and be all said & done for under $300.


Quote:
Originally Posted by bluesubie View Post


I've had such great luck with OEM filters that I haven't really looked into anything else. Other than using Purolator filters maybe two or three times in a 97 OBS and a 99 OB I've always stuck with OEM. Like you, I'm currently running an Amsoil oil filter and I think that Dyson recommends them to his customers.

I've seen a few posts about bypass filters, but I don't think anyone ever followed through because of the hassle of trying to find a mounting spot.

-Dennis
Thanks Dennis,
I'm sure my car is doing fine running SSO & Amsoil Oil filters... Bypass would just allow me to run cleaner oil, longer.
Probably not necessary, but maybe I'll be the Subaru Bypass pioneer.
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Old 01-17-2009, 12:42 AM   #10
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Bypass has always been a good thing for over the road truckers and long drains, so it can't be that bad. Cost is a little high, but nothing compared to the useless crap people put on their cars You will also add 1-2 qts of capacity depending on filter size, length of oil lines, etc. which is a good thing for longer OCI's and keeping oil temp down.

I actually want to do a bypass setup on my Legacy, but with almost 200K I am not sure this engine will stay in it much longer (rebuild, rebuilt longblock, or something crazy...). Let me know what you come up with. I was just thinking the AMSOIL route because it's there and fairly well put-together. I'm sure you could save a few pennies making your own lines and fittings and just buy their filter block.
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Old 01-17-2009, 01:19 AM   #11
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Thanks JamesWilson!

I agree, for the money, its probably almost more beneficial than some of the other things I've done...

I'm gonna get the car up on the lift soon to check out possible mounting locations.

I'll keep you updated.
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Old 01-17-2009, 08:43 AM   #12
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Finally found one Subaru w/ Bypass.

07 Forester - Check it
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Old 01-17-2009, 04:50 PM   #13
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What's a by-pass oil filter setup? Oil filter relocater?
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Old 01-17-2009, 05:06 PM   #14
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If you are going to put on 100,000 Miles each year go for it... Other than that, I don't see any benefits per cost. JMO
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Old 01-17-2009, 05:55 PM   #15
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.....

Last edited by BeBop86; 01-18-2009 at 11:47 AM.
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Old 01-17-2009, 06:47 PM   #16
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What's the point/function?
Here is a pretty good explanation.

If you google for "bypass oil filter" and other variations of that, I'm sure you'll find other explanations as well.

Last edited by RonJitsu; 01-18-2009 at 09:00 AM. Reason: I was mean, I'm sorry.
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Old 01-17-2009, 06:52 PM   #17
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If you are going to put on 100,000 Miles each year go for it... Other than that, I don't see any benefits per cost. JMO
I drive right around 50k per year.

I know its not needed, but I like the idea of having clean oil in my engine at all times. Might help me get some extra miles out of my WRX, since I'm on track to have 200k within a few more years.
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Old 01-17-2009, 07:04 PM   #18
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Good idea, I've been here for years and never seen a Subaru person run a bypass though I've recommend it to hundreds of people. It's usually the annoying people that want to nit-pick oil brand/weight/type for hours and when I suggest they get off the wallet for a bypass set-up, they shut their pie-holes. Good for you! Please post a detailed pics thread when it's all done.
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Old 01-17-2009, 11:14 PM   #19
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Good idea, I've been here for years and never seen a Subaru person run a bypass though I've recommend it to hundreds of people. It's usually the annoying people that want to nit-pick oil brand/weight/type for hours and when I suggest they get off the wallet for a bypass set-up, they shut their pie-holes. Good for you! Please post a detailed pics thread when it's all done.
Thanks for the support Ron.

You can count on a pics thread when its all done!
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Old 01-17-2009, 11:27 PM   #20
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dunno if it is possible but what if you hacked the stock 'oil cooler'...you may be able to use it or parts of it to make a bypass???
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Old 01-18-2009, 02:52 AM   #21
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dunno if it is possible but what if you hacked the stock 'oil cooler'...you may be able to use it or parts of it to make a bypass???
Interesting thought. I dont know much about that stock oil cooler, yet...
I wonder how much it flows.


Sofar I'm thinking of ordering up one of these:
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Old 01-18-2009, 07:33 AM   #22
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Google "bypass oil filtration", instead of clogging my thread...
Didn't take your meds today? The guy had a genuine question.
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Old 01-18-2009, 08:47 AM   #23
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Didn't take your meds today? The guy had a genuine question.
- Nah, been off the meds for a while now.

Its not like me to be like that at all. But he asked the same question twice in this thread just one hour apart. (post #13 & #15)
Edit: I edited my other post & gave a good answer.

Last edited by RonJitsu; 01-18-2009 at 09:02 AM.
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Old 01-18-2009, 09:12 AM   #24
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- Nah, been off the meds for a while now.

Its not like me to be like that at all. But he asked the same question twice in this thread just one hour apart. (post #13 & #15)
Edit: I edited my other post & gave a good answer.
Actually I didn't know the difference either But I did google...
Interesting idea, but I guess only benefits high mileage drivers.
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Old 01-18-2009, 10:45 AM   #25
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Actually I didn't know the difference either But I did google...
Interesting idea, but I guess only benefits high mileage drivers.
True, I drive ~50k per year so it is somewhat beneficial on that end.

But the main reason I like bypass: I really like the idea of having the cleanest possible oil in my engine at all times.
Regular full-flow filters can only remove contaminants that are 15-20 microns or larger. Bypass filtering removes contaminants as small as <1 micron.
I know that contaminants that small (below ~15 microns) probably dont cause that much wear... But I'm hoping that (almost) contaminant free oil will help me get a huge amount of miles out of my engine...
(assuming I dont blow it by driving like an asshat)
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