Secondary Fuel Filter

[1_johnboy]

this is about my MQ triton but assume its the same as the PS.


Im wanting to add a secondary fuel filter. Im wanting to know how and were other owners have placed it. I have a Donaldson kit that filers to 3 microns.
So I needed to know what the factory one was to know would the secondary kit need to go before or after the factory.

I called my local MM dealer up to ask the question. They didn't know and put me on hold to find out. When taken off hold I was told they dont know and I will void my warranty by fitting one.

Now I find this hard to believe. Does anyone here know the answer and have any opinions on what I was told?

[greig]

From the limited info I have seen on the subject, some manufacturers stress for warranty purposes, to fit it before.

[BruceandBobbi]

Mitsubishi would have to prove the extra filter caused the fault. Bit hard to knock back a gearbox problem on a fuel filter.

[1_johnboy]

I would imaging if I have an issue with an injector or injector pump they will go looking for fuel starvation as the cause.

[BorgPS17]

why don't you check out this video.

https://www.youtube.com/watch?v=JYb4qzvvDZo

[shawty950]

2nd filter

Hey Johnboy,

I have an MQ exceed...with same donaldson 3 micron filter kit.
Standard OEM filter is approx 10-20 micron.

Donaldson and other aftermarket filter providers, all say before the OEM filter...I think mainly for warranty...as mentioned above if you get thread tape or thread cement into the system will damage pump or injectors.

Personally I think that is just CYA...every engineer will state, "Coarse, Finer, Finest" is how filtration should work.

Personally, I put all my lower micron filters after the OEM...on the triton, I had the next door neighbour design and tig weld up a bracket behind the Battery picking up the 2 bolts on the wheel arch.

Just be clean and dont go nuts on thread sealant and make sure none of it gets past the thread into the filter housing and you will be good to go.

[1_johnboy]

thanks mate, same train of thought I was on. Would you be able to provide a picture of your install?

[Hill]

John

It's all about risk management.

Donaldson are reducing their risk by keeping factory filter as secondary filter.

I suspect MM don't care what pumps and injectors are like after warranty runs out.

If keeping car outside warranty it makes sense to follow Parker Racor recommendation of filtering diesel to 3 micron @ at least 95% efficiency.

Ryco provide warranty on their products.

I dont have specifications for R2724P Ryco Fuel filter however if it is made of similar filter material to Z699 ( 4 micron @94% efficiency) it should be close to Parker Racor's recommendation.

Ryco will provide specifications of their filters. Just email.

So if anyone is nervous re factory warranty a Ryco filter with their warranty may be an option to consider for single fuel filter set up.

Hill

[shawty950]

Couple of photos of the setup