unifilter v paper

Submitted: Thursday, May 06, 2004 at 17:19
ThreadID: 12657 Views:2918 Replies:6 FollowUps:14
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Has anyone with a GU 3 litre or for that matter any 4x4 done any fuel figures with unifilter v paper and using the factory snorkel. (just fitted the detronic chip)
regards Gerk.
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Reply By: Vince NSW - Thursday, May 06, 2004 at 17:29

Thursday, May 06, 2004 at 17:29
Gerk
No to both of your questions. I tried a Unifilter on a 10,000km trip year before last and chucked it when I got home. In bad dust I was cleaning every second day and it took about 1.5 hrs to clean and re oil. Now I just carry an extra paper filter. Waste of time & $.
Vince
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Follow Up By: Member - Roachie (SA) - Thursday, May 06, 2004 at 17:37

Thursday, May 06, 2004 at 17:37
Vince,
OK; I'll bite.....why was it taking you an hour and a half to clean and re-oil the foam sleeve?
I take the outer off and wash it in petrol/kero/turps etc (petrol is the best as it dries real quickly). Once that's done (about 3 minutes) all should need to do is apply some new oil and work it through. Pesty put me onto the idea of putting the oil and foam into a re-sealable kitchen "Glad-Bag" to do that part, so you don't even need to get your hands all messy. Once completed, you just snip off a bottom corner of the bag and drain any remaining oil back into the bottle. You're still gunna get a bit of oil on the hands putting the sleeve back onto the filter. Whole job shouldn't take any longer than 15 minutes; tops...and that's allowing time for a cleansing ale while waiting for the cleaner stuff to dry off a bit.

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FollowupID: 319247

Follow Up By: Member - Jeff M (WA) - Thursday, May 06, 2004 at 17:58

Thursday, May 06, 2004 at 17:58
Sorry Vince, I gotta agree with Roachie on that one, I had a unifilter inthe Rocky and it was the bees knees mate, saved me hundreds of dollars in filters!
I havn't put one in the Surfer yet, was wondering about air temp sensors as I had a mate with a WRX who had problems atributed to having too much oil on the filter and it galzing the air sensors.
Obvious solution = don't put too much oil on, but it depends how many cleansing ales you've had as to how easy that is! he hee.
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Follow Up By: Truckster (Vic) - Thursday, May 06, 2004 at 20:20

Thursday, May 06, 2004 at 20:20
I got a pile of foam ones that were GIVEN to me(shows you what others thought of them)... Im with Vince, waste of time and money..

but agree with Roachie, more than 10 mins to clean and oil? where you picking out each grain of crap with tweezers and a microscope? You should be able to do oil and air filters and oil change in under an hour!

Been done 29042039480239402394032984 times before... try the archives.
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Follow Up By: Member - Bradley- Thursday, May 06, 2004 at 20:55

Thursday, May 06, 2004 at 20:55
Hey Vince , think about it, if the same amount of dirt goes into the airbox, and the oiled foam filter does such a good job of catching it all, then if your paper filter is 'cleaner' under the same conditions, - where did all the extra dirt go ????

Guys, oiled foam / oiled cotton filters are supreme filters, the most common mistakes are over-oiling the foam , or letting it go a year and having the foam dry out. Quick tip - dont use the finer filter oil, it's too thick and hard to work in / squeeze out. I use the castrol oil and find it is great, easy to get it spot on..

Yeah you can get some coating on the 'hot wire' air flow meters, any good tech will tell you that, but it is an easy job to give it a quick squirt of some carby cleaner when it is service time..

oh- yeah, a stock air filter for my jack costs about $ 90 one use only, the uni-filter i have had for a few years and have cleaned about 15 times cost me $ 75 , $ 10 in oil. Same with our hilux's finer filter...better filtering, better airflow, better power, better economy, better money in my jonny rocket..

BTW - takes me about 15 minutes tops to clean mine, if i am doing really dusty work i whack in an extra 'pre filter' thin piece of foam that can be cleaned in about 5 minutes by its self..
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Follow Up By: Vince NSW - Friday, May 07, 2004 at 08:34

Friday, May 07, 2004 at 08:34
Sorry all !! Very SORRY Unifilter
When I got home late last night I had a look at the filter.
It's not a Unifilter but a Finner.
I followerd the instructions which said I had to wash in Hot water , Dry, BUT not in direct sunlight & away from heat and then re oil. It was taking me a very messy 15 min just to wash in hot water, then drying took forever. The reoiling took no time.
I will re look at the unifilter
Thanks for all the feed back
Vince
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Follow Up By: Member - Roachie (SA) - Friday, May 07, 2004 at 11:41

Friday, May 07, 2004 at 11:41
Bradley,
I tried that Castrol oil on my filter one time but it seemed to give off a real nasty smell through the exhaust.....enough to make my eyes water. I may have put too much on, cos as you said it is thinner and therefore easier to apply.
I think I'll stick with the Uni-Filter or Finer Filter oil. If you want to thin it down a bit before using, why not let the plakky bottle sit in a pot of boiling water for 5 minutes while you're cleaning the foam??
(just a thought, I've never done that myself).
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Follow Up By: Truckster (Vic) - Friday, May 07, 2004 at 13:45

Friday, May 07, 2004 at 13:45
There are other brands of air filter oil, havin raced bikes for 12 yrs, got to know the good stuff...

The really sticky crappy Unifilter oil is the goods (available from bike shops).. You stick the filter in a plastic bag with a few capfulls of oil. then massage the filter in the bag, this coats it, you could almost use a paintbrush to dab it on, then get an old pillow case, then squeeze the filter in the case to remove excess oil...

I'll stick with my paper filters thanks!
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Follow Up By: Member - Jeff M (WA) - Friday, May 07, 2004 at 14:26

Friday, May 07, 2004 at 14:26
Truckster, the world must be back spinning in the correct direction as we disagree again! LOL.
Hope the missus forgives you soon!!
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Reply By: Aston - Thursday, May 06, 2004 at 18:01

Thursday, May 06, 2004 at 18:01
Gerk,

Be aware that most manufacturers are not happy about the installation of an oil soaked filter upstream of the engine sensors.

Their warning of these types of filters is that oil vapour given off by the filter coats the sensors and puts a oil coating on them which it does (by experience) and changes their ability to work properly.

This is why any oil breather that is installed on your car is downstream of any of the sensors that tune the engine, as is the case with your GU.

Thats why I don't use any thing else other than a paper element.

Cheers Aston
AnswerID: 57506

Follow Up By: Member - Roachie (SA) - Thursday, May 06, 2004 at 18:12

Thursday, May 06, 2004 at 18:12
Blokes,
Ahhhh, you jus gotta love these puter controlled donks, don't ya???

I luv my 4.2t/d ol banger with not a computer in sight.

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Follow Up By: Rick Blaine - Thursday, May 06, 2004 at 20:36

Thursday, May 06, 2004 at 20:36
I agree with Aston.... the minute oil droplets do give the assorted sensors a coating and in some cases cause expensive failure.
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Follow Up By: Truckster (Vic) - Friday, May 07, 2004 at 13:49

Friday, May 07, 2004 at 13:49
Air flow sensors for example are $1400
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Reply By: Member - Pesty (SA) - Thursday, May 06, 2004 at 18:45

Thursday, May 06, 2004 at 18:45
As one of my work horses I use a very faithful 45 series ute for paddock spraying with a 2f petrol motor and I changed the filter half way through a season about 5 years ago and my fuel economy saving was instantly about $15 to $18 a day for about 9 hour work. On the deisel 60 the economy went up approx 1km per litre.
Quick and easy to service. Dont know about your high tek donks though Paul.
AnswerID: 57516

Reply By: colin - Thursday, May 06, 2004 at 19:55

Thursday, May 06, 2004 at 19:55
i have finer filtrers on my patrol works a treat, have bought 3 outer sleeves for when i do long dusty trips, just change the sleeve put in placky bag, when i get home clean, re-oil, back in placky bag ready for next play time. Col
AnswerID: 57528

Follow Up By: Member - Bradley- Thursday, May 06, 2004 at 20:57

Thursday, May 06, 2004 at 20:57
yeah, spot on colin (see reply above )
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Reply By: sixten - Thursday, May 06, 2004 at 23:25

Thursday, May 06, 2004 at 23:25
Hi guys
What sort of oil are you using in your foam filters?
Someone told me to use engine oil!!
I got a Finer Filter in my 4runner and are just about to do my 200k service.
cheers
AnswerID: 57563

Follow Up By: Member - Bradley- Friday, May 07, 2004 at 09:21

Friday, May 07, 2004 at 09:21
as above mate, i have found the castrol filter oil great, the finer oil horrible to use, spray packs as used by a lot of motorbike guys are good but expensive.

DON'T use engine oil, it does not contain the tackifiers to make it sticky enough to catch all the fine dust. It will work but nowhere near as good..
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Follow Up By: Truckster (Vic) - Friday, May 07, 2004 at 13:46

Friday, May 07, 2004 at 13:46
The best stuff is Unifilter oil. Sticky as hell, and works awesome. Available at bike shops.
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FollowupID: 319391

Reply By: Flash - Saturday, May 08, 2004 at 09:38

Saturday, May 08, 2004 at 09:38
I too swear by the foam filters, 15mins MAX to clean, saved me a fortune, have proven they breathe and filter better.
BUT I have heard 3rd hand rumours of problems on hi tech (eg:3 litre) engines due to air flow sensors- though a mate with a Nissan 3 litre also uses the foam and also swears by it.. Perhaps it's only a problem when they are over oiled??
AnswerID: 57716

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