Bypass filter install

phumpher · 09-01-2006, 03:13 AM

I've been meaning to post the details for the bypass filter setup I installed on our Prius.
But alas, I haven't found the time to finish the install writeup.

So rather than continue to delay I thought I might share a few photos.
Maybe that will help motivate me.

Enjoy...

**efusco** · 09-01-2006, 08:51 AM

What, exactly, is this, why do you want/need it?

Zerkster · 09-01-2006, 09:44 AM

I too would like 'do you want to know more' (starship troopers quote) hehe

ShellyT · 09-01-2006, 01:34 PM

As I understand it, the Amsoil filter in the photo is an ultra filter(is that right prefix?), it can filter out something like 1 micron particles. The oil pump can't generate the pressure to move oil at the necessary rate through such a fine filter. So some of the oil goes through this filter and the rest through the regular filter.

It gets the oil really clean.
In theroy, with a synthetic oil, you can go a year plus between changes.

Someone here set up one outside the vehicle, instead installing a filter on each one. He runs the used oil through, gets it analyzed, and generally is able to reuse the oil again.

Here's that thread:
http://priuschat.com/index.php?showtopic=2...l=bypass+filter

**efusco** · 09-01-2006, 03:50 PM

Hmmmm, Ok. The concept I like. The physics, however, don't make much sense to me. It seems that given the choice b/w a low resistance and a high resistance filter the vast (like 99%) majority of the oil would go through the low resistance filter. The amount of filtration through the finer filter would seem to be insignificant. Also, I have to question whether any contaminant at the 1 micron level would make an iota of difference anyway.

Further, just b/c one dude can use his oil a second time after analysis doesn't seem to prove that the bypass filter is working. Using synthetic oil in a Prius one could probably go 15-20k miles on the same oil based on analysis with no problem what-so-ever using the OEM oil filter.

Guess I need some education on this b/c on the face of it it doesn't make logical or practical sense to me.

cairo94507 · 09-02-2006, 11:16 AM

I just change the oil and filter every 4K miles and use Toyota oil filters. If I were planning to keep the car for 1M miles maybe I would consider that.

darelldd · 09-02-2006, 11:54 AM

Regardless of if something like this works, I'm a BIG fan of modifications for the sake of modifying (if that weren't yet abvious). That Mike accomplished this in such a tidy package impresses the hell out of me. If it works as advertised, that's just icing.

**efusco** · 09-02-2006, 02:00 PM

<div class='quotetop'>QUOTE(darelldd @ Sep 2 2006, 10:54 AM) [snapback]313061[/snapback]</div>

Quote:

Regardless of if something like this works, I'm a BIG fan of modifications for the sake of modifying (if that weren't yet abvious). That Mike accomplished this in such a tidy package impresses the hell out of me. If it works as advertised, that's just icing.

[/b]

I with ya on that!

randreed · 09-03-2006, 10:02 AM

I like the concept of having two filters to increase the amount of filtration. This seems to be a parallel setup, and the only reason I could see for doing that would be to increase the rate of flow. Is there a benefit in increasing the rate of oil flow in the Prius?

Can this device be configured (or modified) to allow us to run two filters in-line (in series) to increase the amount of filtration? If so, what does that do to the rate of flow?

JohnTortorici · 09-06-2006, 12:06 PM

This level of filtration would be great in a car that only has a gas engine. But for this car, the displacement of the engine is so small, it doesn't need a high flow oil filter. As for how long the oil will last... deposits in the oil are only a small part of it. It is when the oil chemically breaks down that it is no longer useful. I have been using the 15000 mile mobile one oils for about 2 years, and never had a problem with it on a Nissan Frontier. I plan to continue using it on the Prius, and will change it every 15000 miles. Oil will break down over time too, regardless of mileage, so 6 months should be the longest no matter how far you drive.

09-01-2006, 01:34 PM	#4
ShellyT Senior Member Join Date: Feb 2006 Location: eastern Pennsylvania Posts: 482 My Car: Other Non-Hybrid Model: Package: N/A Thanks: 3 Thanked 3 Times in 3 Posts Friends: 0	As I understand it, the Amsoil filter in the photo is an ultra filter(is that right prefix?), it can filter out something like 1 micron particles. The oil pump can't generate the pressure to move oil at the necessary rate through such a fine filter. So some of the oil goes through this filter and the rest through the regular filter. It gets the oil really clean. In theroy, with a synthetic oil, you can go a year plus between changes. Someone here set up one outside the vehicle, instead installing a filter on each one. He runs the used oil through, gets it analyzed, and generally is able to reuse the oil again. Here's that thread: http://priuschat.com/index.php?showtopic=2...l=bypass+filter __________________

09-01-2006, 03:50 PM	#5
efusco Troll Slayer Join Date: Nov 2003 Location: Nixa, MO Posts: 17,228 My Car: 2004 Prius Model: Package: #9 Thanks: 49 Thanked 249 Times in 148 Posts Friends: 37	Hmmmm, Ok. The concept I like. The physics, however, don't make much sense to me. It seems that given the choice b/w a low resistance and a high resistance filter the vast (like 99%) majority of the oil would go through the low resistance filter. The amount of filtration through the finer filter would seem to be insignificant. Also, I have to question whether any contaminant at the 1 micron level would make an iota of difference anyway. Further, just b/c one dude can use his oil a second time after analysis doesn't seem to prove that the bypass filter is working. Using synthetic oil in a Prius one could probably go 15-20k miles on the same oil based on analysis with no problem what-so-ever using the OEM oil filter. Guess I need some education on this b/c on the face of it it doesn't make logical or practical sense to me. __________________ Evan E. Fusco, MD "It's a damn poor mind that can only think of one way to spell a word." -Andrew Jackson

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09-01-2006, 03:13 AM	#1
phumpher um...oh...uh...wa...er Join Date: Jan 2006 Location: where gold was discovered Posts: 40 My Car: 2006 Prius Model: Package: #6 Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	I've been meaning to post the details for the bypass filter setup I installed on our Prius. But alas, I haven't found the time to finish the install writeup. So rather than continue to delay I thought I might share a few photos. Maybe that will help motivate me. Enjoy...

09-01-2006, 08:51 AM	#2
efusco Troll Slayer Join Date: Nov 2003 Location: Nixa, MO Posts: 17,228 My Car: 2004 Prius Model: Package: #9 Thanks: 49 Thanked 249 Times in 148 Posts Friends: 37	What, exactly, is this, why do you want/need it?

09-01-2006, 09:44 AM	#3
Zerkster Join Date: Aug 2006 Location: SanDiego Posts: 21 My Car: Model: Package: Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	I too would like 'do you want to know more' (starship troopers quote) hehe

09-02-2006, 11:16 AM	#6
cairo94507 Senior Member Join Date: Dec 2004 Location: San Ramon Valley, CA, USA Posts: 806 My Car: 2005 Prius Model: Package: #6 Thanks: 0 Thanked 3 Times in 3 Posts Friends: 1	I just change the oil and filter every 4K miles and use Toyota oil filters. If I were planning to keep the car for 1M miles maybe I would consider that.

09-02-2006, 11:54 AM	#7
darelldd Prius is our Gas Guzzler Join Date: Jan 2006 Location: Northern CA Posts: 5,336 My Car: 2006 Prius Model: Package: #6 Thanks: 18 Thanked 44 Times in 32 Posts Friends: 12	Regardless of if something like this works, I'm a BIG fan of modifications for the sake of modifying (if that weren't yet abvious). That Mike accomplished this in such a tidy package impresses the hell out of me. If it works as advertised, that's just icing.

09-03-2006, 10:02 AM	#9
randreed Same as it ever was . . . Join Date: Jul 2006 Location: West Milford, NJ Posts: 594 My Car: 2006 Prius Model: Package: #5 Thanks: 0 Thanked 0 Times in 0 Posts Friends: 3	I like the concept of having two filters to increase the amount of filtration. This seems to be a parallel setup, and the only reason I could see for doing that would be to increase the rate of flow. Is there a benefit in increasing the rate of oil flow in the Prius? Can this device be configured (or modified) to allow us to run two filters in-line (in series) to increase the amount of filtration? If so, what does that do to the rate of flow?

09-06-2006, 12:06 PM	#10
JohnTortorici Join Date: Sep 2006 Posts: 11 My Car: Model: Package: Thanks: 0 Thanked 0 Times in 0 Posts Friends: 0	This level of filtration would be great in a car that only has a gas engine. But for this car, the displacement of the engine is so small, it doesn't need a high flow oil filter. As for how long the oil will last... deposits in the oil are only a small part of it. It is when the oil chemically breaks down that it is no longer useful. I have been using the 15000 mile mobile one oils for about 2 years, and never had a problem with it on a Nissan Frontier. I plan to continue using it on the Prius, and will change it every 15000 miles. Oil will break down over time too, regardless of mileage, so 6 months should be the longest no matter how far you drive.