Uni filters

I contacted the Donaldson rep in Brissy and he said that Donaldsons were designed for slow moving earth moving equipment and suggested that i should not put one on my Hilux, said it would not work.

hope this helps.

Cheers
jack

Careful here... My experience has been with any of the oiled after market filters that minute oil droplets can bugger up sensors in the induction manifolds of the engine and cause faults to show that are not really faults at all if you get what I am waffling about...Especially prevalant in High Tech engines....

I have an 8" Donaldson precleaner that fits on the top of my Safari snorkel (3" opening) which I don't use anymore. I used to take it on trips where I knew there was gunna be a lot of dust, but got sick of changing it over with the normal ram head. I believe it does restrict the air-intake at highway speeds, but okay for tooling around at up to say 60k/h on dusty dirt tracks etc.

If you're interested you can have mine for $25- + postage.

I've gone away from Uni filter too as I was concerned that small particles of foam could separate from the filter and buggar-up my turbo. Now use paper filter again.

Cheers

Roachie

I used an Ini Filter on my MU 3.1 turbo diesel and when I put the snorkel on I put one in the top of it, anyway a couple of days later I found oil leaking from the turbo, the guy who sold me the filter said it would not be it. So I decided to talk to the people at MTQ turbos and was told not to use any oil bathed filter when you have a turbo. took both out and now no leaking of oil, it was ok with one but two. The oil was coming from the breather on the tappet cover which goes back into the turbo.
And I have heard about the sensors as well.
Cheers Bruce

These oiled filters are quite effective, but that can cause them to block much more readily. When this happens, as the engine tries to suck in air, it can also suck oil from the breather pipe into the manifold, turbo, etc.

Any oil on the air flow meter wire can also cause incorrect readings, I believe.

I tried a replacement element oiled unit on a Discovery a few years ago. I found it a bit of a nuisance with additional servicing. The outer (coarser) foam layer also deteriorated and caused a significant restriction in the finer foam layer...to the point where power loss was quite marked.

After that I adapted a 7" Donaldson cyclone unit (of which I'd fitted several to vehicles in the past), and was very happy...very long element life, and very effective with filtration efficiency.

Best of luck

Regards
Brid

Grant
Only the petrols and diesels that run an air volume sensor inside the inlet have these problems...yours wont be bothered with oil....here are the facts...oiled foam filters better the fine dust....IF...IF.. you follow directions and oil it properly....they dont flow as much as paper, and need more maintenance, but if keeping dust out is your aim, they are great...had one for years in the filter of my cruiser....i carry a spare outer band that sits in its plastic bag oiled up....i swap it for the dirty one, and clean and oil the old at my leisure.
Be careful with the filters that go inside the snorkel, when they become restricted, they suck into the snorkel and you cant get them back out without alot of trouble.
Seen the foam filter pads that go infront of the air rams, they look ok...but this is what i did...if your interested....i crried a few air conditioning filters with me on my last Innamincka trip, and wrapped them around my ram head with some sticky tape to hold them....easy to pack, use and remove....they caught alot of dust before it got inside the snorkel.
The Donaldson will work well aswell....the last one i had caught dust and water droplets even....but it also reduced the boost in the turbo by 2 psi so they do restrict on the highway.
Andrew
Andrew