I recently picked up a used tank from a wrecker. I made sure it was clean before installing it in my 2+0. It was a big day dropped the subframe and replaced the tank etc etc. On cleaning, I found these crystals. They were sugary, quite coarse and did not dissolve in the fuel. I vacuumed it all out and rinsed out the tank in metho. I was just wondering if anyone knew of a fuel additive that came in the form of a crystal? Apart from this the tank was spotless so am happy its now in. cheers PS - am trying to figure out how to include images!
There was some old fuel that was yellowed - this coloured the crystals. When dried, they were clear and very uniform - this might call for some tests if such a product/additive doesn't exist. cheers
This is a guess, but I'd say the tank has been filled at some stage using a container that had that stuff in it. Definitely something you don't want in your fuel tank.
Does it dissolve well in warm water? I'd say most likely someone at some stage has decided to try the old sugar in the fuel tank revenge mechanism.
I'm going to suggest the previous owner used a bag of those diesel 'water absorbing' crystals in this tank. In hindsight, there was something that could have been the packaging for these crystals. Apparently these 'can' be used in petrol. Overnight a lump dried out and went rock hard. I have just dissolved it very easily in water. Good news: Not sand. Sugar? not likely? It was so rock hard and not 'sugary'....if that counts as a reason! I have cleaned it all out (99%) so am happy to use the tank but I wonder if it adversely affected the previous engine? Cheers,
If the filter sock on your pump is intact they're not going to get sucked up into your fuel system anyway, so may not have had any affect on the previous engine.
While maybe not being sucked up, they might be sucking up to the sock and restricting flow. Pumps hate having inlet restrictions.
I vote its meth, bag it up and sell it to the junkies Not helpful but im sure it will raise a few smiles
the thought crossed my mind - too many james bond movies I think! I will say it the substance moved quickly to the lowest point of the tank so hopefully all those people using it are pretty safe from having it block the inlet. I also read that those bags are meant to be left in a tank for 2 months then removed - obviously before the bag ruptures. (They come with a string) So there it is!
