Purolator - Wix Oil filter question - bypass valve & oversized filters & cold weather - Toyota FJ Cruiser Forum
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Old 11-21-2007, 05:31 PM   #1 (permalink)
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Purolator - Wix Oil filter question - bypass valve & oversized filters & cold weather

I've come across an interesting finding when researching which filter to use.

The recommended WIX is 51348.
The recommended purolator PureOne is PL12021.

I've also found that many Tundra owners are using an oversized PureOne (PL30001)

When I look up the specifications of those three filters, the bypass valve specs are :

WIS 51348 : 8-11 psi
PureOne PL12021 : 12-17 psi
PureOne PL30001 : 8-16 psi

Questions :
1. Besides the fact that an oversized filters will require a bit more oil, are there any reason NOT to use an oversized filter?
2. What to make of these bypass valve specs? What setting is specified by Toyota?
3. Is a lower bypass setting better more oil would reach the engine during cold start?
4. Or is a higher bypass setting better because the more oil would be spent going through the filter media
5. Should we be using different filters in cold vs warm weather? For example, in cold weather, use the one with a lower bypass valve setting?
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Old 11-22-2007, 05:55 AM   #2 (permalink)
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Re: Purolator - Wix Oil filter question - bypass valve & oversized filters & cold weather

Wow, you're really into researching oil filters. 1. I had always used the large oil filter in my small block Chevy but in my FJC I'm usig the PureOne PL12021. 2. That I didn't know, whatever the specs call for on the oem filter. 3. That has nothing to do with cold start. Bypass setting is for clog filter. 4. I would tend to agree on that one. 5. Never heard of that one my$.02
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Old 11-22-2007, 07:43 AM   #3 (permalink)
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Re: Purolator - Wix Oil filter question - bypass valve & oversized filters & cold weather

Go ahead and use em. Wix acutally had an "Off Road" filter similar to the PureOne offered by Purolator. I'm not sure if it is still available but could check out if your looking to go with each companies best filter.

Question though, why the bigger filter needed? Crumby oil, no air filter, alot of water fording and contaminants in your oil? Swapping filters is usually done because your in a pinch. If the right one is offered why not use it.
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Old 11-22-2007, 03:32 PM   #4 (permalink)
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Re: Purolator - Wix Oil filter question - bypass valve & oversized filters & cold wea

As long as it has a good anti-drain back valve you should be o.k. If not, a bigger filter takes longer to fill each start. See my previous post.

http://www.fjcruiserforums.com/forum...ed-filter.html

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Old 11-25-2007, 09:08 AM   #5 (permalink)
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Re: Purolator - Wix Oil filter question - bypass valve & oversized filters & cold weather

Its not a big deal really what you use. The Eng never drops below 15psi. No filters are are true "full flow". The only way to catch what bypasses the filter is to use a secondary or "bypass" filter that filters the oil off the main gally and return it to the oil pan. Not worth the install.\

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Old 11-25-2007, 09:23 AM   #6 (permalink)
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Re: Purolator - Wix Oil filter question - bypass valve & oversized filters & cold weather

have you thought about using the toyota oversized filter such as a V8.
i use the toyota V8 filter which part number is #90915-YZZD3
and just use 5.8 to 6 qts of oil. i use the the Lexus 5w-30
hope that helps some
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Old 11-25-2007, 10:06 AM   #7 (permalink)
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Re: Purolator - Wix Oil filter question - bypass valve & oversized filters & cold weather

Well, the reason I thought it might be better to use the WIX filter in cold weather is that oil thickens up when cold. During cold start, with the WIX filter, the bypass valve would open sooner allowing oil to reach the engine sooner.
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Old 11-25-2007, 02:25 PM   #8 (permalink)
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Re: Purolator - Wix Oil filter question - bypass valve & oversized filters & cold weather

Quote:
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... in cold weather is that oil thickens up when cold.

Use a good quality synthetic oil of the appropriate viscosity and you won't have that problem.
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Old 12-07-2007, 05:22 PM   #9 (permalink)
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Re: Purolator - Wix Oil filter question - bypass valve & oversized filters & cold weather

i have read some reviews on oil filters just now and see wix is up there and fram is out. has there been a poll on oil filters? i am going to start changing my own. and looking for highest rated . by fj owners. input? sorry didn't mean to rob a thread
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Old 12-07-2007, 08:34 PM   #10 (permalink)
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Re: Purolator - Wix Oil filter question - bypass valve & oversized filters & cold weather

Quote:
stringmachine previously said: View Post
...looking for highest rated . by fj owners. input?

I use Amsoil Absolute Efficiency P/N EaO57. I also like and have used in the past Mobil 1 and Purolator PureOne filters.
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