DieselCare fuel manager filter - GU ZD30

[skiman]

Skiman. I take it yoh havd a crd?

Yes mate. 2010 3.0L GU (Rocket55's old Wagon)

[Rock Trol]

I went over to Hi tech Diesel today and swapped my two remaining 5 micron filters for shorter 30 micron filters.
I explained to them why I had removed the unit originally and they seemed to think that there may have been another issue with the hoses or filter as they use 5 micron filters all the time and have no power loss. If I get a bracket and refit the unit and there is a problem they suggested I take it over and they will sort it out. 30 micron filters should be more free flowing that the 5's and if I use a shorter length of hose it should also help.

[skiman]

o.0

30 micron? Doesn't that defeat the purpose for these filters mate? I wouldnt be settling for less than 5 personally. Micron size aside, check the flow rates of the filter too; Makes no difference if its 100 micron if its still got a terrible flow rate if you know what I mean.

Glad you have some traction with a possible fix though. Let us know how it goes.

[Rock Trol]

o.0

30 micron? Doesn't that defeat the purpose for these filters mate? I wouldnt be settling for less than 5 personally. Micron size aside, check the flow rates of the filter too; Makes no difference if its 100 micron if its still got a terrible flow rate if you know what I mean.

Glad you have some traction with a possible fix though. Let us know how it goes.

Flow rate for both filters is 300 lpm so its quite high. The 30 micron will separate water and catch any large crap before it hits the OEM filter. I am not sure what the OEM filter is. It would be either 2 or 5 micron so it should do the job. A lot of the advertising (scaremongering) on the filter manufacturers sites is there just to sell their product.
Keep in mind that lots of CRD Patrols have been travelling in the outback with zero problems. Members from our club have done the Cape, west Australia, central deserts etc and no one has had a problem with fuel yet. Partly good luck. Partly buying at name brand servos etc.

I do know that if I had left the 5 micron filter on it would have killed the pump. It was starving of fuel (sluggish performance) and I think air was getting into the system somehow which in hindsight may have been the real issue. If I get it working with the 30 micron filter and a new bracket I might try going a finer filter again. I think an extra water trap/filter is like insurance just in case you are unlucky, but only if its installation has no negative affect on the vehicle.

Also, the guy at Hi Tech didn't think that a lift pump is necessary. He did say though that some cars had problems running extra filtration and that it could be a sign that there is a problem with the pump.