TSP to clean a gas tank?
 

Is there any reason that TSP could not be used to clean a fuel tank with light scale? I already have the tsp and this is not my best tank? This tank is for driving my chassis around only using spare firewall and gas tank.

Re: TSP to clean a gas tank?
 

TSP is used to clean organic things. Rust scale is not organic.

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Re: TSP to clean a gas tank?
 

Use molassas and water, it will clean ALL the rust and crud out of any steel part.

Re: TSP to clean a gas tank?
 

As recommended to me by DICK M, I recently used undiluted white vinegar with amazing results. About $3.00 for a 1.33 gallon jug at COSTCO. Took a little over 8 jugs. Let it sit for a few days and then drain and rinse with water until the water runs clear. As you rinse, make sure to "slosh" the water in the tank to loosen the scale.

Here was my post https://www.fordbarn.com/forum/showthread.php?t=103802

Re: TSP to clean a gas tank?
 

Thanks all. I have it in the back of the truck driving for a couple of days with vinegar in it. Doesn't leak. It will make a nice spare setup for driving completed chassis around in.

http://i4.photobucket.com/albums/y133/orange54/cowl.jpg

http://i4.photobucket.com/albums/y13...ge54/photo.jpg

Re: TSP to clean a gas tank?
 

I bought an indented firewall gas tank that looked clean when shining a light in the gas gauge hole and the filler hole. I thought I was very lucky to find such a good tank but I wanted to make sure so I took my 4" hole saw and cut a hole on the firewall side of the tank above the outlet pipe and what a surprise! There was the biggest rat's nest you ever saw. It couldn't be seen because of the baffles. Since I had to weld up one hole I cut three more. Two more on the bottom of the tank and another on the firewall side of the tank. I was able to see the spotwelds of the baffles so I placed these 4" holes so I could sandblast into each compartment and of course cleaned out the rat's nest. After welding up the holes I had my radiator man pressure test the tank which checked out. After some grinding of welds, some body filler and primer you can't tell where I cut the holes. This ended up a lot of work but in my case where I did not know the history of the tank, it was worth the effort.