Air Filter

Submitted: Sunday, Jun 12, 2005 at 14:31
ThreadID: 23800 Views:1915 Replies:10 FollowUps:9
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We have 100 Series Landcruiser, we are considering purchasing a Unifilter (an airfilter that you can wash and re use). Has anyone out there used one, are they happy with it or had any problems??????

Sandy
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Reply By: AT4WD ADVENTURES - Sunday, Jun 12, 2005 at 14:50

Sunday, Jun 12, 2005 at 14:50
Sandy,

I have a toyo100 with K&N Filter.....great purchase....not only save money on replacement filters and clean and re-oil anywhere but engine breathes heaps easier.

Regards,

Stuart
AnswerID: 115451

Follow Up By: Exploder - Sunday, Jun 12, 2005 at 15:19

Sunday, Jun 12, 2005 at 15:19
Yep go the K&N excellent product; the air filter for the Explorer was $70 from ford so went and got a K&N for $130 never looked back. The oil on them can annoy the M.A.F sensor over time thou, nothing some carbie and electrical contact cleaner won’t fix but.
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FollowupID: 371137

Reply By: Member - Jeff M (WA) - Sunday, Jun 12, 2005 at 17:22

Sunday, Jun 12, 2005 at 17:22
I run a Unifilter in the Surf, same kind of electronics the 100 series has, no problems, buys me a carton of beer every service with the cost savings.

I also ran them in my older diesel and petrols motors with no problems.
AnswerID: 115457

Reply By: Skinnydog - Sunday, Jun 12, 2005 at 17:58

Sunday, Jun 12, 2005 at 17:58
I had a Unifilter, but I am abit lazy and got sick of washing it , carrying turps, tub and oil as we do a lot of dirt roads, found they dust up a lot quicker. I've gone back to paper which is easier to tap out the dust and am getting a pre filter.
Skinnydog
AnswerID: 115460

Follow Up By: Member - Jeff M (WA) - Sunday, Jun 12, 2005 at 22:36

Sunday, Jun 12, 2005 at 22:36
" found they dust up a lot quicker"
Umm, let's think about this:

More dust in the filter = less dust in the motor.

I find even in really dusty conditions I can pop the top of the air box, spin the filter around a quater turn and is all good. That will get you through most trips, I used to have to blow the paper ones out with the compressed air on trips all the time, with the uni filter it collected the majority of dust right where the snorkel enters the air box, I've never had to clean the Unifilter while "on the road" yet.
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Follow Up By: Skinnydog - Sunday, Jun 12, 2005 at 22:44

Sunday, Jun 12, 2005 at 22:44
I should have mentioned that when i pulled the intake pipe between the filter box and the engine off i found a film of fine dust inside.
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FollowupID: 371160

Follow Up By: Member - Jeff M (WA) - Monday, Jun 13, 2005 at 10:55

Monday, Jun 13, 2005 at 10:55
Well somthing wasn't right, I had to replace my pipe from the air box to the turbo the other week, clean as a whistle. I also check my air flow sensor when servicing, not a spec. Sounds like it wasn't sealing right, sure you had the right one fitted?
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FollowupID: 371176

Reply By: Aston - Sunday, Jun 12, 2005 at 19:03

Sunday, Jun 12, 2005 at 19:03
Hi,

You might like to have a read of this before you make any decisions

Click on this,
link text

Cheers Aston
AnswerID: 115469

Follow Up By: Skinnydog - Sunday, Jun 12, 2005 at 22:33

Sunday, Jun 12, 2005 at 22:33
Nuff said
Skinnydog
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FollowupID: 371157

Reply By: Jayson - Sunday, Jun 12, 2005 at 21:29

Sunday, Jun 12, 2005 at 21:29
Sandy and Ross,
I had an RV 100 in '98 and got a TD 100 in '02. The turbo filter is a different part number than the standard, is quite a bit larger but still fits in the standard air filter housing. I have used the original Toyota air cleaner all the time for the following reasons:
If you read the sticker on the original air filter you will see it has instructions for washing it. I have two filters and just alternate between them. I clean them by giving them a spray of diluted CT-18 and water and giving them a blat with the hose from the inside first and then the outside. They usually take a couple of days to dry out.
I used a finer filter on my '92 GQ and went to the trouble of having it dyno'd with and without the finer filter and original filter and a properly oiled finer filter had an adverse effect on power output. That's why I'm staying with unoiled paper filters, regularly washed and changed out.
Please email to franjays@tpg.com.au if you wish to disuss any further.
Cheers
Jayson
Karratha WA
AnswerID: 115483

Reply By: Steve - Sunday, Jun 12, 2005 at 21:38

Sunday, Jun 12, 2005 at 21:38
I used one in my 80 series and found it not worth a squirt...and it now sits in the box with oil and detergent and will never use it again ...it was a complete waste of time and money and if you want one for free...reckon no difference to 100 series just let me know...IMHO...'useless and worse' ...come and collect it ...free to a good home !!! ( Sydney )
AnswerID: 115488

Reply By: Member - Alan - Sunday, Jun 12, 2005 at 22:12

Sunday, Jun 12, 2005 at 22:12
I used a Uni filter for a few years on my Diahatsu Rocky until a diesel mechanic recommended I go back to paper airfilters to see if an oil weep around the turbo stopped before spending major dollars. It was a few years ago now but from memory I think his line of thought was it restricted airflow, I went back to paper filters and the weeping stopped .(Maybe I was using to much liquid)
Just my 2 bobs worth , I would stay with the paper filters, and its a messy job cleaning and re-oiling the U/filter.
Regards
Alanc
AnswerID: 115492

Follow Up By: Member - Jeff M (WA) - Sunday, Jun 12, 2005 at 22:34

Sunday, Jun 12, 2005 at 22:34
I ran one on my rocky for years without a problem, and yeah the most common problem with them is that people are too heavy handed with the oil on them, two teaspoons is all you need.
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FollowupID: 371158

Reply By: Member - Stan (VIC) - Monday, Jun 13, 2005 at 01:42

Monday, Jun 13, 2005 at 01:42
Hi, it is OK for city, highway roads. If you are going offroad or dusty places,
then put paper filter back in...
AnswerID: 115503

Follow Up By: Member - Jeff M (WA) - Monday, Jun 13, 2005 at 11:49

Monday, Jun 13, 2005 at 11:49
That's exactly what I planned on doing with this one, I've still got the paper filter on the bench at home, I havn't bothered with it yet... Maybe if I go up north for a couple of weeks or somting, but we went out to Kal over easter and it was as dusty as hell and all I did before the trip home was spin the filter around. You can't miss that red dust either, and there was not a spec in the inelet pipe to the turbo.
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FollowupID: 371185

Reply By: Bob Y. - Qld - Monday, Jun 13, 2005 at 08:41

Monday, Jun 13, 2005 at 08:41
Used a Unifilter on a 60 series we used to have. Found a fine film of dust in intake hose most times. Living in a hot dry climate made the water based oil I used, dry out, as vehicle wasn't used regularly.

Have just bought a K& N filter, though I 'll probably only use it for trips on bitumen. K & N even make a comment about using such filters in "fine" dust conditions.

Heavy earthmoving equipment, such as Caterpillar, use paper elements. 'Nuff said.

From a few years working with such equipment, and comments on this forum, feel some people clean their elements too much, often introducing dust into the system when the element is removed. Paper elements can take huge amounts of dust, before becoming restrictive.

Hooroo...
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Can't remember most of it.

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AnswerID: 115509

Follow Up By: Member - Jeff M (WA) - Monday, Jun 13, 2005 at 11:53

Monday, Jun 13, 2005 at 11:53
Yeah, you're right, the instructions say that you should rotate it reguarly if the vehicle is not being used much, otherwise the oil can seep to the bottom of the filter and that would probally explain you getting dust in there.
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FollowupID: 371186

Reply By: Member - Jeff M (WA) - Monday, Jun 13, 2005 at 11:57

Monday, Jun 13, 2005 at 11:57
I think the problems associated with these types of filters are generally caused by people's lack of maintenance, understanding or of reading the instructions.
The main points I belive are:
1. Not rotating when the vehicle is seldom used causing dryness and lack of filter performance. (why would you use one in a vehicle that doesn't do many ks???)
2. Over oiling, not reading the instructions as to the cleaning and re oiling procedures.

I don't belive that these filters offer much more in performance, but they do deffinatally serve a purpose and they are good at filtering dust.

I think if you are the type of person who puts a filter in and forgets about it, then they are not for you. But if you are the type of person who check's the filter reguarly I think they can work very well.

Each to their own though, I love mine.
AnswerID: 115532

Follow Up By: Sandy & Ross - Tuesday, Jun 21, 2005 at 19:32

Tuesday, Jun 21, 2005 at 19:32
Thanks people for the time you have taken with our query.
We will take all the advice on board before we make a decision to purchase or not, though the general concenous is that if you live in dusty conditions (we travel on dirt roads daily) then stick to paper filters!!!!!!!!!!
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FollowupID: 372250

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