Rust in Tank

[lmoe]

About a year ago, I bought a 98 gal steal tank (like the one in Tractor Supply) and got it connected to my truck tank with an inline filter. Recently I have noticed rust in the inline filter and also in the engine filter. I need advise as what I need to do to prevent rust from getting into the engine. I replaced the engine filter about two week ago and plan to change it with every oil change along with my inline filter.

 

[TulsaOkie]

That sure can get expensive, it seems like it would be cheaper to go buy a aluminum tank.

 

[PFranzese]

You could seal the inside of the steel tank. May not be easy with a large tank.



Tank Sealer

 

[CKelley1]

you posted on the 6. 7 forum so i asume you have a common rail and a gravity feed aux tank. inbetween the aux tank and filler neck insert a wix 33406 filter and wix 24770 base. the filter has a drain on it. when we install our tanks we weld a 1/4 inch pipe collar on the bottom of the tank wether it is steel or aluminum. we place it about 6"x6" from the point nearest the driver. then we cut a hole in the bed and set the tank. connect a ball valve and go to the filter. the reason you are getting rust in the tank is because there is no way to get the last 1/2 inch of liquid out of the tank. look at your drain fitting and you can see what i am talking about. get underneath the truck and find the spot you want to have the coller come through and drill a hole through the bed next just drill just enough on the tank to mark it. remove the tank and center the collar over the mark and weld it on. next screw a nipple into the collar and drill a hole through the tank, this keeps from hurting the threads. now widen the hole in the bed to about two inches and reinstall the tank. now the water can get out of the tank and no more new rust. next get two more 24770 bases connect them in series and use a 33374 filter in the first one and a 33674 in the second one. connect about two feet of 3/8 hose to each end. mount the filters just forward of the truck tank on the bottom of the cab. you will se where it needs to go there is two bolts there for a rear seat option. find the feed line to the truck filter and cut it into at the point that it is becide the new filters. bend the lines out toward the filters and slide the hoses over the lines and clamp them down. next take the top off of the truck filter and turn the key on to fill the filters and purge the air. next install a new stock filter and replace the cap. next install a taped banjo bolt on the cp3 and get a oil filter installation with the copper line from any car parts place and a glycerine filled gauge from northern , surplus center or many others. get a 15psi full scale. you will read about 7 psi. you do not need to change the 33406 untill it no longer gravity feeds the main tank. change the 33374 and the 33674 when the pressure drops to about two psi. the stock filter will never need to be replaced

 

[CKelley1]

i forgot to run spell check and see many mistakes but i think you can figure out what it was suppose to be

 

[lmoe]

I already have an inline filter; do I need two more base a filter for a total of three or just the two? Also, this job is beyond my "no how", I would think that a machine shop would be more appropriate for the job.

 

[Skydiver]

I suggest a heavy guage plastic tank. You don't want rust problems.

 

[lmoe]

I did not know plastic tanks could be used for diesel; do you know who sells them?

 

[AABEN]

I run a steel tank from tractor supply and i run a filter. I am going to get a 5micro the next time i replace it. I have used it from 04 to now and have had NO trouble with it. I am still runing the same pump that came on the truck !! I add 1oz of outboard motor oil For every gal at every fill . You did not put down what year truck you have if it is 07 up no oil.

 

[B.G. Smith]

I ran a 110 gal. steel tank on a 99 for 115,000 miles and never had rust get to the main filter. I pumped the fuel from the aux. tank to the main tank through a filter that I bought at TSC, I believe it was a Goldenrod. It had a clear phenolic bowl with a drain and replaceable element. I saw evidence of rust in that filter and changed it when it got pretty brown. Never had trouble with the fuel system on the truck eiother other rthan replacing the lift pump early on. None of the fuel from the aux. tank ever went into the main tank or directly to the engine fuel filter. bg

 

[lmoe]

Yes, I forgot to mention what I have; It's a 7. 5 6. 7 diesel. I don't know if it would be a good idea to put oil in my aux tank.

 

[CKelley1]

it is easy to do i can send pix. but you might be better off printing out what i posted and take it to a welding shop.

 

[lmoe]

Thank's Kelley1, I think that's what I'm going to do; I've already made a copy of what you wrote and it makes sense. Draining the tank from the bottom should solve the problem.

 

[GaryOwen]

Very good info from CKelley1! FYI the parts listed by CK are also available from NAPA. Wix filter mount part 24770 is NAPA FIL4770. Wix filter numbers 33674, 33374, and 33406 are NAPA numbers FIL3674, FIL3374, and FIL3406 respectively. They are all Wix parts.



I had a similar filter system on my 03, but where CK uses two filters without drains between the tank and engine, I used a fuel/water separator (similar to 33406) and a high efficiency filter similar to the one CK uses. I just wanted another chance to catch water, but not sure it was really needed.

 

[CKelley1]

gary i got him the water separator between the aux and the main tank i only fill to the aux tank. this removes the water and prefilters to 14 micron before interring the main tank. thanks for letting him know about the cross refrence

 

[lmoe]

CKelly1

Yes, that is some good info; however, you kind of lost me with the last statement about installing a taped bonjo bolt, and the oil filter installation. I did find the 15 psi glycerine fille guage. If you can be a bit more detailed, I would greatly appreciate it.