BenCD

Funny, about getting or thinking one needs new bolts. Might as well get new lug bolts every time one gets new tires.

The parts guy I had gotten the first fuel filter from at the closest dealer from me,had insisted that I'd need new bolts. I told him that I'll pass this time and if I need them I'd come back and get them. I'll never see him for another fuel filter again as I know that the VW Touareg Mahle or the Mann filters are the exact same, for 1/2 the cost as they do not come in the white Porsche origami-box that must cost $40.

991howl

I must have gotten the last one. It was Mann filter and $21, it says Made in Germany on the Box

post note: Interestingly, the rubber gasket was dark brown color instead of blue as shown in the pictures above. The one I swapped out was blue (original). I hope it's not counterfeit :-)

Eskimo1

My guess is that since the bolts are quite short, they're less tolerant of being over-tightened without partially stripping the threads, so to be safe (since we're talking about fuel system components), they specify them to be replaced. I didn't do it the first time, but did this last go around. It was under $10 for all of them, so what the heck, it's not a terrible idea. But yeah, you'll likely go the life of the vehicle without needing new ones if you're mindful when tightening.

pvgolfer

While changing the oil on my 2016 Diesel this weekend, I thought I'd take a look inside the fuel filter housing and suction out any water. After I removed all 5 screws and lifted the cover, I saw that the entire canister/housing was full (to the brim) with diesel fuel. I guess I'm not surprised... after all, the fuel must pass through the filter and fill the canister in order for it to have enough pressure to exit the canister.

How does one know whether or not any WATER is at the bottom of the canister? Does water simply sink to the bottom of the canister, while diesel fuel stays on top of the water? The entire contents looks like clear fluid, and smells like diesel. Should all the fluid be suctioned out of the canister as part of the cleaning/draining procedure? If so, should the canister be refilled with fuel in order to "prime" the system, or can I simply turn the ignition on to get the pump running and primed?

BTW - the filter looked very clean (white), so I simply replaced the cover of the canister and tightened down the 5 screws. Didn't suction anything out, nor replace the filter. Left the canister full of diesel (and maybe some water????)

r553

Yes the water is heavier than the diesel fuel and resides at the bottom of the housing. I haven't seen any water yet either.

chsu74

Typically there is a bleeder at the bottom of diesel fuel filters to bleed water. There is none at the CD so use a turkey baster..

dimeadip